Dr. François Châteauneuf Profile

Dr. François Châteauneuf

Program Manager at INO

SPIE Involvement:

Conference Program Committee | Author

Publications (52)

PROCEEDINGS ARTICLE | May 14, 2018

Customized packaged bolometers in niche applications at INO

Proc. SPIE. 10656, Image Sensing Technologies: Materials, Devices, Systems, and Applications V

KEYWORDS: Staring arrays, Bolometers, Packaging, Microbolometers, Sensors, Reflectivity, Terahertz radiation, Radiometry

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PROCEEDINGS ARTICLE | November 21, 2017

Radiometric packaging of uncooled bolometric infrared focal plane arrays

Proc. SPIE. 10566, International Conference on Space Optics — ICSO 2008

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PROCEEDINGS ARTICLE | November 21, 2017

LIFT a future atmospheric chemistry sensor

Proc. SPIE. 10568, International Conference on Space Optics — ICSO 2004

KEYWORDS: Telescopes, Mirrors, Interferometers, Sensors, Calibration, Spectroscopy, Fourier transforms, Space telescopes, Black bodies, Mirror pointing

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PROCEEDINGS ARTICLE | November 20, 2017

Satellite on-board real-time SAR processor prototype

Proc. SPIE. 10565, International Conference on Space Optics — ICSO 2010

KEYWORDS: Image compression, Satellites, Synthetic aperture radar, Image processing, Spatial light modulators, Optoelectronics, Telecommunications, Signal processing, Astronomical imaging, Prototyping

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A Compact Real-Time Optronic SAR Processor has been successfully developed and tested up to a Technology Readiness Level of 4 (TRL4), the breadboard validation in a laboratory environment. SAR, or Synthetic Aperture Radar, is an active system allowing day and night imaging independent of the cloud coverage of the planet. The SAR raw data is a set of complex data for range and azimuth, which cannot be compressed. Specifically, for planetary missions and unmanned aerial vehicle (UAV) systems with limited communication data rates this is a clear disadvantage.

SAR images are typically processed electronically applying dedicated Fourier transformations. This, however, can also be performed optically in real-time. Originally the first SAR images were optically processed. The optical Fourier processor architecture provides inherent parallel computing capabilities allowing real-time SAR data processing and thus the ability for compression and strongly reduced communication bandwidth requirements for the satellite.

SAR signal return data are in general complex data. Both amplitude and phase must be combined optically in the SAR processor for each range and azimuth pixel. Amplitude and phase are generated by dedicated spatial light modulators and superimposed by an optical relay set-up. The spatial light modulators display the full complex raw data information over a two-dimensional format, one for the azimuth and one for the range. Since the entire signal history is displayed at once, the processor operates in parallel yielding real-time performances, i.e. without resulting bottleneck. Processing of both azimuth and range information is performed in a single pass.

This paper focuses on the onboard capabilities of the compact optical SAR processor prototype that allows in-orbit processing of SAR images. Examples of processed ENVISAT ASAR images are presented. Various SAR processor parameters such as processing capabilities, image quality (point target analysis), weight and size are reviewed.

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PROCEEDINGS ARTICLE | November 17, 2017

Wideband response of a terahertz-millimeter imager based on a 384x288 pixel uncooled bolometric detector

Proc. SPIE. 10563, International Conference on Space Optics — ICSO 2014

KEYWORDS: Infrared cameras, Imaging systems, Cameras, Sensors, Inspection, Terahertz radiation, Infrared radiation, Astronomical imaging, Indium oxide, Combined lens-mirror systems

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PROCEEDINGS ARTICLE | February 20, 2017

Uncooled midwave infrared sensors for spaceborne assessment of fire characteristics

Proc. SPIE. 10116, MOEMS and Miniaturized Systems XVI

KEYWORDS: Bolometers, Readout integrated circuits, Microbolometers, Infrared sensors, Mid-IR, Remote sensing, Resistance, Semiconducting wafers, Wheatstone bridges

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Spaceborne assessment of fire characteristics relies on radiance measurement of fire pixels and non-fire pixels mainly in the midwave infrared (MWIR). Because ambient temperature non-fire pixels have low thermal emission in this spectral range, it remains a challenge to retrieve fire characteristics with the desired accuracy. This paper reports on uncooled microbolometers specially designed with low noise equivalent power (NEP) to enable fire diagnosis at MWIR wavelengths. Each microbolometer forming a 512x3 format array includes a Wheatstone bridge of one active, one blind, and two thermally shunted pixels followed by its own signal chain. Design analyses suggest the conditions for achieving the best NEP performance are: (i) the active, blind, and one shunt pixel have equal electrical resistances while the other shunt pixel has a larger resistance; (ii) the temperature difference between the active pixel and heat sink corresponds to about one-third the heat sink temperature; and (iii) the active and blind pixels have low thermal mass and conductance. Hardwired devices having different structural layouts were prepared for the validation of physical parameters and performance so that the suitable designs could be identified. After this, focal planes of 512x3 microbolometers were fabricated on readout electronics to allow further performance evaluation and development of staggered 1017x3 format arrays for a planned mission. The active pixel designs on the fabricated arrays exhibit a MWIR absorptance as high as 0.83 through implementation of a Salisbury screen absorber, a thermal conductance of ~ 67 nW/K, and a response time shorter than 10 ms. Their responsivities are found to be in good agreement with predictions of the design analysis. The effectiveness of an Al shield platform erected above the blind pixel was investigated, showing that certain designs are capable of attenuating the incident power by up to 24 times. Under optimal operating conditions an NEP of ~ 64 pW was derived from measurements in the spectral range of 3.4-4.2 um, which was corroborated by the probing results obtained on the on-wafer focal plane arrays. When using these arrays with an F/1 telescope to retrieve scenes of 400 K from low Earth orbits, a noise equivalent temperature difference of ~ 320 mK can be achieved.

PROCEEDINGS ARTICLE | September 14, 2016

Design and instrumentation of an airborne far infrared radiometer for in-situ measurements of ice clouds

Proc. SPIE. 9973, Infrared Remote Sensing and Instrumentation XXIV

KEYWORDS: Microbolometers, Telescopes, Optical filters, Mirrors, Cameras, Sensors, Clouds, Black bodies, Far infrared, Signal detection

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PROCEEDINGS ARTICLE | July 22, 2016

NFIRAOS beamsplitters subsystems optomechanical design

Proc. SPIE. 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II

KEYWORDS: Optomechanical design, Visible radiation, Beam splitters, Safety, Silica, Interfaces, Wavefronts, Finite element methods, Optical simulations, Adhesives

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PROCEEDINGS ARTICLE | February 27, 2015

Far infrared microbolometers for radiometric measurements of ice cloud

Proc. SPIE. 9375, MOEMS and Miniaturized Systems XIV

KEYWORDS: Staring arrays, Microbolometers, Coating, Reflectivity, Clouds, Data acquisition, Far infrared, Bridges, Semiconducting wafers, Temperature metrology

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PROCEEDINGS ARTICLE | August 4, 2014

Pyramidal Wavefront Sensor Demonstrator at INO

Proc. SPIE. 9148, Adaptive Optics Systems IV

KEYWORDS: Actuators, Telescopes, Mirrors, Modulation, Cameras, Sensors, Wavefront sensors, Phase shift keying, Adaptive optics, Indium oxide

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PROCEEDINGS ARTICLE | March 7, 2014

Design and fabrication of net flux radiometers for Mars exploration

Proc. SPIE. 8975, Reliability, Packaging, Testing, and Characterization of MOEMS/MEMS, Nanodevices, and Nanomaterials XIII

KEYWORDS: Microbolometers, Sensors, Data acquisition, Domes, Infrared radiation, Radiometry, Mars, Solar radiation, Prototyping, Temperature metrology

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PROCEEDINGS ARTICLE | May 31, 2013

A global review of optronic synthetic aperture radar/ladar processing

Proc. SPIE. 8714, Radar Sensor Technology XVII

KEYWORDS: Digital image processing, Imaging systems, LIDAR, Synthetic aperture radar, Image processing, Wavefronts, Spatial light modulators, Optoelectronics, Data processing, GPU based image processing

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PROCEEDINGS ARTICLE | March 9, 2013

Spaceborne linear arrays of 512x3 microbolometers

Proc. SPIE. 8614, Reliability, Packaging, Testing, and Characterization of MOEMS/MEMS and Nanodevices XII

KEYWORDS: Microbolometers, Long wavelength infrared, Mid-IR, Cameras, Sensors, Calibration, Infrared radiation, Electronic filtering, Space operations, Bandpass filters

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PROCEEDINGS ARTICLE | December 18, 2012

Microscope with 3D mapping capabilities for planetary exploration applications

Proc. SPIE. 8550, Optical Systems Design 2012

KEYWORDS: Microscopes, Mirrors, Light emitting diodes, Sensors, Reflectivity, Image resolution, 3D metrology, Projection systems, Modulation transfer functions, Digital Light Processing

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PROCEEDINGS ARTICLE | October 15, 2012

Latest developments in active remote sensing at INO

Proc. SPIE. 8515, Imaging Spectrometry XVII

KEYWORDS: Cameras, LIDAR, Sensors, Spectroscopy, Ultraviolet radiation, Luminescence, Raman spectroscopy, Head, Indium oxide, Absorption

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Remote sensing or stand-off detection using controlled light sources is a well known and often used technique for atmospheric and surface spatial mapping. Today, ground based, vehicle-borne and airborne systems are able to cover large areas with high accuracy and good reliability. This kind of detection based on LiDAR (Light Detection and Ranging) or active Differential Optical Absorption Spectroscopy (DOAS) technologies, measures optical responses from controlled illumination of targets. Properties that can be recorded include volume back-scattering, surface reflectivity, molecular absorption, induced fluorescence and Raman scattering. The various elastic and inelastic backscattering responses allow the identification or characterization of content of the target volumes or surfaces. INO has developed instrumentations to measure distance to solid targets and monitor particles suspended in the air or in water in real time. Our full waveform LiDAR system is designed for use in numerous applications in environmental or process monitoring such as dust detection systems, aerosol (pesticide) drift monitoring, liquid level sensing or underwater bathymetric LiDARs. Our gated imaging developments are used as aids in visibility enhancement or in remote sensing spectroscopy. Furthermore, when coupled with a spectrograph having a large number of channels, the technique becomes active multispectral/hyperspectral detection or imaging allowing measurement of ultra-violet laser induced fluorescence (UV LIF), time resolved fluorescence (in the ns to ms range) as well as gated Raman spectroscopy. These latter techniques make possible the stand-off detection of bio-aerosols, drugs, explosives as well as the identification of mineral content for geological survey. This paper reviews the latest technology developments in active remote sensing at INO and presents on-going projects conducted to address future applications in environmental monitoring.

PROCEEDINGS ARTICLE | September 13, 2012

Design and test results of the calibration unit for the MOAO demonstrator RAVEN

Proc. SPIE. 8447, Adaptive Optics Systems III

KEYWORDS: Zemax, Diffraction, Telescopes, Mirrors, Stars, Calibration, Adaptive optics, Relays, Tolerancing, Indium oxide

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PROCEEDINGS ARTICLE | September 13, 2012

Optical designs of the LGS WFS system for GMT-LTAO

Proc. SPIE. 8447, Adaptive Optics Systems III

KEYWORDS: Telescopes, Mirrors, Optical design, Wavefronts, Adaptive optics, Distortion, Collimators, Space telescopes, Charge-coupled devices, Optical instrument design

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PROCEEDINGS ARTICLE | February 16, 2012

Net flux sensors for the measurement of Mars surface radiation budget

Proc. SPIE. 8252, MOEMS and Miniaturized Systems XI

KEYWORDS: Bolometers, Microbolometers, Gold, Sensors, Coating, Sensor networks, Domes, Radiometry, Mars, Environmental sensing

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PROCEEDINGS ARTICLE | October 27, 2011

Basis for optronic ScanSAR processing

Proc. SPIE. 8179, SAR Image Analysis, Modeling, and Techniques XI

KEYWORDS: Soil science, Data modeling, Imaging systems, Cameras, Synthetic aperture radar, Image processing, Spatial light modulators, Optoelectronics, Data processing, Image processing software

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PROCEEDINGS ARTICLE | October 13, 2011

Resolution capability comparison of infrared and terahertz imagers

Proc. SPIE. 8188, Millimetre Wave and Terahertz Sensors and Technology IV

KEYWORDS: Infrared detectors, Infrared imaging, Imaging systems, Cameras, Sensors, Image resolution, Image quality, Terahertz radiation, Infrared radiation, Modulation transfer functions

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PROCEEDINGS ARTICLE | October 3, 2011

Current status of the EarthCARE BBR detectors development

Proc. SPIE. 8176, Sensors, Systems, and Next-Generation Satellites XV

KEYWORDS: Staring arrays, Readout integrated circuits, Gold, Sensors, Interfaces, Ultrasonics, Aluminum, Epoxies, Indium oxide, Simulation of CCA and DLA aggregates

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PROCEEDINGS ARTICLE | October 3, 2011

TICFIRE: a far infrared payload to monitor the evolution of thin ice clouds

Proc. SPIE. 8176, Sensors, Systems, and Next-Generation Satellites XV

KEYWORDS: Staring arrays, Microbolometers, Cameras, Sensors, Calibration, Particles, Clouds, Far infrared, Radiometry, Toxic industrial chemicals

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PROCEEDINGS ARTICLE | May 21, 2011

Optical designs of compact multichannel and all-reflective system for infrared imaging

Proc. SPIE. 8012, Infrared Technology and Applications XXXVII

KEYWORDS: Infrared imaging, Monochromatic aberrations, Mirrors, Optical design, Imaging systems, Cameras, Wavefronts, Aspheric lenses, Indium oxide, Off axis mirrors

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In space infrared (IR) optics, to achieve better observation of ground target, a common aperture all-reflective telescope, working at fast focal-ratio with multi-channel to cover different waveband and wide field-of-view (FOV), is a most wanted optical system. The remarkable imaging properties of the fast focal-ratio, flat-field, anastigmatic, rotationally symmetric Schwarzschild telescope have been well recognized historically, but suffer strong central obscuration and limited FOV in the conventional axis-symmetric design. Our solution is to use an eccentric system evolved from the Schwarzschild axially symmetric system, adding a tertiary off-axis mirror, to optimize the off-axis performance with the appropriate system parameters and specs, as required by most space IR optical systems. The optical design system consists of three powered mirrors, in which the primary (M1) is convex and secondary (M2) is either convex or concave, with a tertiary (M3) always in concave shape respectively. Both secondary and tertiary mirrors have their size larger than that of the primary. The entrance pupil of the system is projected behind M1. Dichroic filters can be used after the tertiary mirror to achieve separation of multi-spectral channels. In the designs the mirrors with optimized aspherical shapes, which are all in even-asphere warped up to 10^th asphericities, are used for achieving the final image quality. The final corrected wavefront in the system can result in the good optical performance with an encircled energy of better than 80% per pixel for all channels, working at F/1.66 to correct a wide FOV up to 27.7⁰ (H) x 48.7⁰ (V). The design is scalable for different image scales, as usually required for different optical systems targeting different applications. The broad spectral range from mid-wave infrared (MWIR) up to Far IR can be fully covered by this design. Multiple focalplane- arrays (FPAs) can be used with respect to different spectral channels in the optical systems.

SPIE Journal Paper | November 1, 2010

Design, manufacturing, and qualification of an uncooled microbolometer focal plane array-based radiometric package for space applications

García-Blanco, Sonia , Côté, Patrice , Leclerc, Melanie , Blanchard, Nathalie , Desroches, Yan , Caron, Jean-Sol , Ngo Phong, Linh , Châteauneuf, François , Pope, Timothy

JM3 Vol. 9 Issue 04

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PROCEEDINGS ARTICLE | October 23, 2010

A SAR multilook optronic processor for operational Earth monitoring applications

Proc. SPIE. 7829, SAR Image Analysis, Modeling, and Techniques X

KEYWORDS: Unmanned aerial vehicles, Image compression, Synthetic aperture radar, Image processing, Image resolution, Spatial light modulators, Optoelectronics, LCDs, Reconnaissance, Prototyping

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PROCEEDINGS ARTICLE | July 28, 2010

Optical designs with wide field-of-view adaptive optics for IMAKA of CFHT

Proc. SPIE. 7736, Adaptive Optics Systems II

KEYWORDS: Telescopes, Mirrors, Optical design, Lenses, Glasses, Wavefronts, Adaptive optics, Relays, Optical instrument design, Off axis mirrors

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PROCEEDINGS ARTICLE | April 27, 2010

A real-time high-resolution optical SAR processor

Proc. SPIE. 7669, Radar Sensor Technology XIV

KEYWORDS: Optical signal processing, Synthetic aperture radar, Image processing, Fourier transforms, Image resolution, Spatial light modulators, Optoelectronics, Optical resolution, Parallel computing, Prototyping

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PROCEEDINGS ARTICLE | September 29, 2009

Real-time optical processor prototype for remote SAR applications

Proc. SPIE. 7477, Image and Signal Processing for Remote Sensing XV

KEYWORDS: Radar, Unmanned aerial vehicles, Synthetic aperture radar, Image processing, Fourier transforms, Spatial light modulators, Signal processing, Antennas, Signal generators, Prototyping

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PROCEEDINGS ARTICLE | September 23, 2009

An uncooled mid wave and thermal infrared payload for fire monitoring

Proc. SPIE. 7474, Sensors, Systems, and Next-Generation Satellites XIII

KEYWORDS: Thermography, Mid-IR, Mirrors, Electronics, Sensors, Calibration, Satellites, Black bodies, Indium oxide, Temperature metrology

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PROCEEDINGS ARTICLE | September 10, 2009

Lens barrel design of the NIRST IR Camera

Proc. SPIE. 7424, Advances in Optomechanics

KEYWORDS: Long wavelength infrared, Infrared cameras, Infrared imaging, Mid-IR, Cameras, Lens design, Objectives, Finite element methods, Tolerancing, Liquids

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PROCEEDINGS ARTICLE | September 2, 2009

Performances of the SAC-D NIRST flight model radiometer

Proc. SPIE. 7453, Infrared Spaceborne Remote Sensing and Instrumentation XVII

KEYWORDS: Staring arrays, Microbolometers, Long wavelength infrared, Mid-IR, Cameras, Sensors, Manufacturing, Finite element methods, Indium oxide, Temperature metrology

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PROCEEDINGS ARTICLE | May 7, 2009

Space qualification of a 512x3 pixel uncooled microbolometer FPA

Proc. SPIE. 7298, Infrared Technology and Applications XXXV

KEYWORDS: Staring arrays, Microbolometers, Long wavelength infrared, Mid-IR, Radio optics, Cameras, Sensors, Black bodies, Stray light, Temperature metrology

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PROCEEDINGS ARTICLE | February 24, 2009

Advanced microbolometer detectors for a next-generation uncooled FPA for space-based thermal remote sensing

Proc. SPIE. 7208, MOEMS and Miniaturized Systems VIII

KEYWORDS: Staring arrays, Readout integrated circuits, Microbolometers, Long wavelength infrared, Mid-IR, Sensors, Clouds, Sensor performance, Detector development, Thermal remote sensing

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PROCEEDINGS ARTICLE | February 24, 2009

Nanosatellite distributed far infrared radiometers

Proc. SPIE. 7208, MOEMS and Miniaturized Systems VIII

KEYWORDS: Microbolometers, Electronics, Radio optics, Sensors, Satellites, Data acquisition, Far infrared, Radiometry, Space operations, Active sensors

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PROCEEDINGS ARTICLE | February 10, 2009

Radiometric packaging of uncooled microbolometer FPA arrays for space applications

Proc. SPIE. 7206, Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS and Nanodevices VIII

KEYWORDS: Staring arrays, Microbolometers, Long wavelength infrared, Sensors, Copper, Aluminum, Radiation effects, Stray light, Indium oxide, Temperature metrology

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INO has extensive experience in the design and fabrication of focal plane arrays (FPAs) of uncooled microbolometers. In particular, the FPA of 512×3 microbolometers, developed in collaboration with the Canadian Space Agency (CSA), has been selected for use in the NIRST (New Infrared Sensor Technology) radiometer of the SAC-D Aquarius mission. The FPA has been designed for pushbroom scanning of the Earth to provide radiometric data in the mid- and long-wave infrared for the monitoring of fires as well as thermal mapping of ocean temperature. Uncooled microbolometer detectors are suited for space applications due to their low power consumption while still exhibiting adequate performance. Furthermore, the spectral range of their response could be tuned from the mid- to the far-infrared to meet different mission requirements. In order to ensure that the detector receives only the thermal contribution from the desired target and to minimize radiometric error due to variation of the temperature of the surrounding during the measurements, a radiometric package is required. In a radiometric package the detector environment is thermally stabilized by means of a temperature controlled radiation shield. The radiation shield should also be designed to prevent stray radiation from reaching the detector. Under the Space Technology Development Program of the CSA, INO has designed, assembled and tested a radiometric package in order to characterize its performance and compatibility with the space environment. The operating spectral band is defined by the spectral characteristics of a bandpass filter placed in front of the FPA. For typical space missions, the package must pass standard environmental tests without degradation of its performance (thermal cycling from -55 to +85 °C according to MIL-STD-810, random acceleration up to 14 G RMS from 20-2000 Hz and shock up to 75 G). In order to ensure reliability in those conditions while maintaining optimum performance, an adequate selection of materials is necessary. In this paper, INO's radiometric packaging technology for uncooled microbolometer FPA's will be presented. The selection of materials will be discussed and the final choices presented based on thermal simulations and experimental data. The effects of different design parameters on the performance, such as material, shape and thickness of radiation shield and choice of adhesive have been studied. An instantaneous noise equivalent temperature difference (NETD) of ~ 20 mK was obtained under the measurement conditions (broadband LWIR, 140 ms integration time, f/1 optics, characterization in flood exposure). The design of the package reduced the contribution of environmental temperature variations on the offset of the sensor. The equivalent response of the package varied less than 0.08 °C per degree of variation of the temperature of the package. The package also showed low sensitivity to stray radiation as a result of the effectiveness of the radiation shield design. The device successfully passed the prescribed environmental tests without degradation of performance.

PROCEEDINGS ARTICLE | February 9, 2009

Hybrid wafer-level vacuum hermetic micropackaging technology for MOEMS-MEMS

Proc. SPIE. 7206, Reliability, Packaging, Testing, and Characterization of MEMS/MOEMS and Nanodevices VIII

KEYWORDS: Microelectromechanical systems, Packaging, Microbolometers, Carbon dioxide, Argon, Gases, Diffusion, Optical microcavities, Indium oxide, Temperature metrology

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Packaging constitutes one of the most costly steps of MEMS/MOEMS manufacturing. The package protects the MEMS devices and, in the case of MOEMS, it also provides light access to the device. In many cases, MEMS require a specific atmosphere for their proper functioning. The atmosphere should be kept invariable during the lifetime of the package in order to not degrade the performance of the device. Maintaining a constant atmosphere inside the package becomes more challenging as the cavity volume is decreased to the microliter and nanoliter range. Other packaging requirements are compatibility with wafer-level microfabrication techniques (cost reduction) and low temperature assembly in cases where temperature sensitive devices are to be packaged. In recent years, INO has performed a great amount of work towards the development of uncooled IR microbolometer detectors using VOx technology. Different pixel designs have been optimized for different applications. The bolometer pixels require a vacuum atmosphere below 10 mTorr to be maintained during the lifetime of the device in order to operate at their highest sensitivity. INO's micropackaging technology has been demonstrated to provide base pressures below 5 mTorr. An equivalent flow rate of 2.5×10^-14 Torr.l/sec has been obtained for a device packaged without any getter. The advantages of INO's micropackaging technology are the possibility of achieving very low base pressures, the low temperatures required for the assembly (the package device is never exposed to a temperature above 150 °C) and its compatibility with hybrid wafer-level packaging. The technology has been developed for the micropackaging of INO's 160×120 pixel uncooled microbolometer FPA, but it is compatible with any other kinds of MOEMS-MEMS devices requiring vacuum hermetic packaging. In order to increase the lifetime of the package, knowledge of the gases outgassing inside the package is crucial. A hybrid approach has been chosen as it permits packaging only known-good dies and saving considerable quantities of IR window material. In INO's hybrid wafer-level packaging, dicing is performed only through one of the wafers, therefore reducing the risk of perturbing the vacuum during the separation of the different dies.

PROCEEDINGS ARTICLE | September 26, 2007

Design of the SAC-D/NIRST camera module

Proc. SPIE. 6678, Infrared Spaceborne Remote Sensing and Instrumentation XV

KEYWORDS: Staring arrays, Microbolometers, Infrared sensors, Mid-IR, Electronics, Cameras, Sensors, Infrared radiation, Indium oxide, Temperature metrology

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PROCEEDINGS ARTICLE | September 8, 2006

ACE-FTS instrument: extending mission lifetime

Proc. SPIE. 6297, Infrared Spaceborne Remote Sensing XIV

KEYWORDS: Signal to noise ratio, Mirrors, Imaging systems, Sensors, Satellites, Fourier transforms, Infrared spectroscopy, Transmittance, Infrared radiation, Space operations

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PROCEEDINGS ARTICLE | September 8, 2006

Reliability enhancement activities for the TANSO interferometer

Proc. SPIE. 6297, Infrared Spaceborne Remote Sensing XIV

KEYWORDS: Metrology, Data modeling, Interferometers, Satellites, Spectroscopy, Reliability, Fourier transforms, Semiconductor lasers, Diodes, Carbon monoxide

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PROCEEDINGS ARTICLE | August 29, 2005

ACE-FTS instrument: after two years on-orbit

Proc. SPIE. 5883, Infrared Spaceborne Remote Sensing 2005

KEYWORDS: Signal to noise ratio, Near infrared, Mirrors, Sun, Imaging systems, Sensors, Fourier transforms, Transmittance, Infrared radiation, Space operations

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PROCEEDINGS ARTICLE | October 26, 2004

On-orbit performance of the ACE-FTS instrument

Proc. SPIE. 5542, Earth Observing Systems IX

KEYWORDS: Signal to noise ratio, Near infrared, Mirrors, Visible radiation, Sun, Imaging systems, Sensors, Fourier transforms, Transmittance, Space operations

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PROCEEDINGS ARTICLE | March 8, 2004

Evolution of FTIR technology as applied to chemical detection and quantification

Proc. SPIE. 5269, Chemical and Biological Point Sensors for Homeland Defense

KEYWORDS: Mid-IR, Diamond, FT-IR spectroscopy, Chemical species, Spectroscopy, Crystals, Spectrometers, Infrared spectroscopy, Infrared radiation, Chemical detection

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PROCEEDINGS ARTICLE | February 18, 2004

A future atmospheric chemistry sensor: the Limb Infrared Fourier Transform spectrometer

Proc. SPIE. 5249, Optical Design and Engineering

KEYWORDS: Mirrors, Interferometers, Sensors, Calibration, Spectroscopy, Fourier transforms, Infrared spectroscopy, Space telescopes, Black bodies, Mirror pointing

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PROCEEDINGS ARTICLE | November 10, 2003

Characterization of the ACE-FTS instrument line shape

Proc. SPIE. 5151, Earth Observing Systems VIII

KEYWORDS: Infrared imaging, Modulation, Imaging systems, Interferometers, Calibration, Fourier transforms, Infrared spectroscopy, Infrared radiation, Atmospheric particles, Absorption

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PROCEEDINGS ARTICLE | November 10, 2003

Cross-track Infrared Sounder (CrIS) development status

Proc. SPIE. 5152, Infrared Spaceborne Remote Sensing XI

KEYWORDS: Long wavelength infrared, Data modeling, Interferometers, Sensors, Remote sensing, Spectral resolution, Transmittance, Infrared radiation, Earth's atmosphere, Prototyping

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PROCEEDINGS ARTICLE | December 18, 2002

CrIS raw data records (Level 0) to sensor data records (Level 1b) processing

Proc. SPIE. 4818, Infrared Spaceborne Remote Sensing X

KEYWORDS: Metrology, Interferometers, Sensors, Calibration, Semiconductor lasers, Spectral calibration, Neon, Laser metrology, Medium wave, Printed circuit board testing

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PROCEEDINGS ARTICLE | September 24, 2002

ACE-FTS test results and performances

Proc. SPIE. 4814, Earth Observing Systems VII

KEYWORDS: Signal to noise ratio, Visible radiation, Modulation, Imaging systems, Interferometers, Sensors, Fourier transforms, Infrared spectroscopy, Process control, Transmittance

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PROCEEDINGS ARTICLE | September 24, 2002

ACE-FTS instrument detailed design

Proc. SPIE. 4814, Earth Observing Systems VII

KEYWORDS: Mirrors, Imaging systems, Interferometers, Sensors, Fourier transforms, Infrared spectroscopy, Finite element methods, Infrared radiation, Space operations, Ozone

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PROCEEDINGS ARTICLE | February 8, 2002

Recent developments on the ACE-FTS instrument

Proc. SPIE. 4486, Infrared Spaceborne Remote Sensing IX

KEYWORDS: Signal to noise ratio, Infrared imaging, Mirrors, Sun, Imaging systems, Sensors, Fourier transforms, Infrared spectroscopy, Transmittance, Infrared radiation

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PROCEEDINGS ARTICLE | November 16, 2000

Design of the Atmospheric Chemsitry Experiment instrument

Proc. SPIE. 4131, Infrared Spaceborne Remote Sensing VIII

KEYWORDS: Signal to noise ratio, Mirrors, Sun, Imaging systems, Interferometers, Sensors, Interfaces, Fourier transforms, Transmittance, Ozone

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PROCEEDINGS ARTICLE | August 5, 1994

Tunnel ionization of atoms and molecules in an intense CO2 laser field

Proc. SPIE. 2321, Second International Conference on Optoelectronic Science and Engineering '94

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PROCEEDINGS ARTICLE | January 5, 1994

Dynamics of excitations of molecules driven by ultrashort laser pulses

Proc. SPIE. 2041, Mode-locked and Other Ultrashort Laser Designs, Amplifiers, and Applications

KEYWORDS: Ultrafast phenomena, Femtosecond phenomena, Molecules, Control systems, Photoemission spectroscopy, Molecular lasers, Pulsed laser operation, Systems modeling, Beam controllers, Laser systems engineering

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Showing 5 of 52 publications

Conference Committee Involvement (3)

Imaging Spectrometry XIX

18 August 2014 | San Diego, California, United States

Imaging Spectrometry XVIII

26 August 2013 | San Diego, California, United States

Imaging Spectrometry XVII

13 August 2012 | San Diego, California, United States

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