Dr. Joachim R. Sacher Profile

Dr. Joachim R. Sacher

Chief Executive Officer at Sacher Lasertechnik GmbH

SPIE Involvement:

Author

Area of Expertise:

Tunable Diode Lasers , Spectroscopy , High Power Diode Lasers , Optical Cooling & Trapping , Nonlinear Dynamics

Websites:

Company Website

Publications (25)

Proceedings Article | 12 March 2024 Presentation + Paper

Design of an FPGA-based PID controller with high-bandwidth and auto-relocking features: application to Sub-kHz external cavity diode lasers

Hervé Tatenguem, Christian Aßmann, Sebastian Schmidtmann, Patricia Sacher, Martin Honsberg, Joachim Sacher

Proceedings Volume 12871, 1287108 (2024) https://doi.org/10.1117/12.3001465

KEYWORDS: Laser stabilization, Design, Field effect transistors, Control systems, Analog to digital converters, Semiconductor lasers, Field programmable gate arrays, Signal processing, Sampling rates

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Proceedings Article | 8 March 2023 Presentation + Paper

QEPAS spectroscopy with fully tunable IC-ECDL with high bandwidth for the MIR range

Hervé Tatenguem, Morten Hoppe, Christian Aßmann, Sebastian Schmidtmann, Martin Honsberg, Joachim Sacher

Proceedings Volume 12428, 124280W (2023) https://doi.org/10.1117/12.2650210

KEYWORDS: Field programmable gate arrays, Gases, Methane, Absorption, Spectroscopy, Semiconductor lasers, Reflection gratings, Prisms, Laser systems engineering, Laser resonators

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Proceedings Article | 31 May 2022 Presentation + Paper

THz metrology with monolithic tunable two-color diode lasers

Martin Hofmann, Nils Surkamp, Alexandra Gerling, James O'Gorman, Martin Honsberg, Sebastian Schmidtmann, Uttam Nandi, Sascha Preu, Joachim Sacher, Carsten Brenner

Proceedings Volume 12134, 1213408 (2022) https://doi.org/10.1117/12.2626219

KEYWORDS: Terahertz radiation, Semiconducting wafers, Semiconductor lasers, Principal component analysis, Silicon, Refractive index, Receivers, Photonics, Metrology, Fabry–Perot interferometers

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Proceedings Article | 5 March 2022 Presentation + Paper

Extremely fast tunable interband cascade laser with external cavity for the MIR region

Morten Hoppe, Christian Aßmann, Sebastian Schmidtmann, Martin Honsberg, Herve Tatenguem, Thomas Schanze, Joachim Sacher, ShanShan Gu-Stoppel

Proceedings Volume 12008, 1200801 (2022) https://doi.org/10.1117/12.2609462

KEYWORDS: Microelectromechanical systems, Scanners, Resonators, Waveguides, Semiconductor lasers, Quantum cascade lasers, Spectroscopy, Signal detection, Mirrors, Absorption

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Proceedings Article | 5 March 2022 Presentation + Paper

A dual gas QEPAS detector based on non-overlapping QTF resonance frequencies

Hervé Tatenguem, Morten Hoppe, Christian Assmann, Tobias Milde, Joachim Sacher

Proceedings Volume 12008, 120080O (2022) https://doi.org/10.1117/12.2609703

KEYWORDS: Sensors, Field programmable gate arrays, Semiconductor lasers, Gas lasers, Modulation, Carbon dioxide, Quartz, Amplifiers, Methane, NoResults

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Proceedings Article | 4 March 2022 Presentation + Paper

Slotted Y-branch laser for cw-THz thickness measurements at 1 THz

Nils Surkamp, Alexandra Gerling, James O'Gorman, Martin Honsberg, Sebastian Schmidtmann, Uttam Nandi, Sascha Preu, Joachim Sacher, Carsten Brenner, Martin Hofmann

Proceedings Volume 12021, 1202104 (2022) https://doi.org/10.1117/12.2609787

KEYWORDS: Semiconducting wafers, Terahertz radiation, Refractive index, Silicon, Spectroscopy, Fabry–Perot interferometers

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Proceedings Article | 5 March 2021 Open Access

Sacher Lasertechnik GmbH: 780nm Micron Laser with Saturated Rubidium Spectroscopy

Joachim Sacher, Bala Kameswar Peri

Proceedings Volume 11716, 1171621 (2021) https://doi.org/10.1117/12.2596065

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Proceedings Article | 5 March 2021 Presentation + Paper

Compact detector unit based on the butterfly assembly for trace gas analysis

Tobias Milde, Morten Hoppe, Hervé Tatenguem, Sebastian Schmidtmann, Martin Honsberg, Christian Assmann, Wolfgang Schade, Joachim Sacher

Proceedings Volume 11697, 116970R (2021) https://doi.org/10.1117/12.2578935

KEYWORDS: Sensors, Data modeling, Quartz, Laser optics, Field programmable gate arrays, Carbon dioxide lasers, Atmospheric modeling, Semiconductor lasers, Safety, Product safety

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Proceedings Article | 5 March 2021 Presentation + Paper

Innovative ECDL design based on a resonant MEMS scanner for ultra-fast tuning in the MIR range

Morten Hoppe, Sebastian Schmidtmann, Christian Aβmann, Martin Honsberg, Herve Tatenguem, Tobias Milde, Thomas Schanze, Joachim Sacher, Shanshan Gu-Stoppel, Frank Senger

Proceedings Volume 11697, 1169709 (2021) https://doi.org/10.1117/12.2578913

KEYWORDS: Microelectromechanical systems, Ultrafast phenomena, Scanners, Actuators, Semiconductor lasers, Molecules, Gases, Absorption

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Proceedings Article | 2 March 2020 Presentation + Paper

A real-time and portable digital lock-in amplifier for quartz enhanced photo-acoustic spectroscopy (QEPAS)

Hervé Tatenguem, Amrita Josnan, Morten Hoppe, Tobias Milde, Joachim Sacher

Proceedings Volume 11287, 112870Y (2020) https://doi.org/10.1117/12.2545940

KEYWORDS: Field programmable gate arrays, Signal to noise ratio, Absorption, Amplifiers, Modulation, Linear filtering, Spectroscopy, Signal detection, Methane, Photoacoustic spectroscopy

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Proceedings Article | 28 February 2020 Paper

Wide and fast mode-hop free MEMS tunable ECDL concept and realization in the NIR and MIR spectral regime

Morten Hoppe, Hanna Rohling, Sebastian Schmidtmann, Martin Honsberg, Herve Tatenguem, Jan Grahmann, Tobias Milde, Thomas Schanze, Joachim Sacher

Proceedings Volume 11293, 112930C (2020) https://doi.org/10.1117/12.2546213

KEYWORDS: Microelectromechanical systems, Absorption, Semiconductor lasers, Actuators, Carbon monoxide, Mirrors, Gallium antimonide, Near infrared, Gas lasers, Mid-IR

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Proceedings Article | 24 February 2020 Paper

Realization of GaSb based DFB Lasers and Gain Chips for the 1.9 µm to 3 µm spectral regime for molecular spectroscopy

Martin Honsberg, Tobias Milde, Sebastian Schmidtmann, Christian Assmann, Morten Hoppe, Joachim Sacher

Proceedings Volume 11301, 113011C (2020) https://doi.org/10.1117/12.2546472

KEYWORDS: Semiconductor lasers, Gallium antimonide, Diodes, Semiconducting wafers, Absorption, Laser damage threshold, Carbon monoxide, Wavelength tuning, Gases, Mid-IR

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Proceedings Article | 4 March 2019 Presentation + Paper

New wide tunable external cavity interband cascade laser based on a micro-electro-mechanical system device

Morten Hoppe, Hanna Rohling, Sebastian Schmidtmann, Hervé Tatenguem, Tobias Milde, Joachim Sacher

Proceedings Volume 10931, 109310C (2019) https://doi.org/10.1117/12.2507176

KEYWORDS: Microelectromechanical systems, Semiconductor lasers, Actuators, Diffraction, Switching, Reflection

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Proceedings Article | 1 March 2019 Presentation + Paper

Comparison of the spectral excitation behavior of methane according to InP, IC, and QC lasers as excitation source by QEPAS

Tobias Milde, Morten Hoppe, Herve Tatenguem, Christian Assmann, Wolfgang Schade, Joachim Sacher

Proceedings Volume 10917, 109171M (2019) https://doi.org/10.1117/12.2507180

KEYWORDS: Absorption, Methane, Quantum cascade lasers, Absorbance, Semiconductor lasers, Gallium antimonide, Sensors

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Proceedings Article | 22 February 2018 Presentation + Paper

MEMS-based widely tunable external cavity diode laser

Álvaro Jiménez, Tobias Milde, Hervé Tatenguem, Martin Honsberg, Guillermo Carpintero, James O'Gorman, Joachim Sacher

Proceedings Volume 10545, 105450J (2018) https://doi.org/10.1117/12.2287849

KEYWORDS: Microelectromechanical systems, Semiconductor lasers, Laser systems engineering, Actuators, Tunable lasers, Diffraction gratings, Laser applications, Mirrors, Reflection

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Proceedings Article | 19 February 2018 Paper

New GasB-based single-mode diode lasers in the NIR and MIR spectral regime for sensor applications

Tobias Milde, Morten Hoppe, Herve Tatenguem, Martin Honsberg, Mario Mordmüller, James O’Gorman, Wolfgang Schade, Joachim Sacher

Proceedings Volume 10553, 105530C (2018) https://doi.org/10.1117/12.2287702

KEYWORDS: Semiconductor lasers, Field programmable gate arrays, Carbon monoxide, Signal detection, Gallium antimonide, Gases, Absorption, Methane, Sensors, Molecules

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Proceedings Article | 15 February 2018 Presentation + Paper

A real-time multi-gases detection and concentration measurements based-on time-division multiplexed-lasers

Fatemeh Yazdandoust, Hervé Tatenguem Fankem, Tobias Milde, Alvaro Jimenez, Joachim Sacher

Proceedings Volume 10517, 105170N (2018) https://doi.org/10.1117/12.2287416

KEYWORDS: Carbon dioxide, Field programmable gate arrays, Methane, Transmittance, Time division multiplexing, Clocks, Multiplexing, Sensors, Earth's atmosphere, Calibration

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Proceedings Article | 22 February 2017 Presentation + Paper

Narrow-line diode laser packaging and integration in the NIR and MIR spectral range

Alvaro Jimenez, Tobias Milde, Niklas Staacke, Christian Assmann, James O'Gorman, Joachim Sacher

Proceedings Volume 10085, 1008505 (2017) https://doi.org/10.1117/12.2255635

KEYWORDS: Semiconductor lasers, Packaging, Tunable diode lasers, Near infrared, Spectroscopes, Laser development, Micro optics, New and emerging technologies, Near infrared spectroscopy, Laser packaging, Waveguides, Tunable lasers, Optical simulations, Cladding, Quantum wells, Absorption, Microelectromechanical systems

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Proceedings Article | 27 April 2016 Paper

System analysis of wavelength beam combining of high-power diode lasers for photoacoustic endoscopy

Luca Leggio, Daniel Gallego, Sandeep Gawali, Miguel Sánchez, Sergio Rodriguez, Marek Osiński, Joachim Sacher, Guillermo Carpintero, Horacio Lamela

Proceedings Volume 9888, 988807 (2016) https://doi.org/10.1117/12.2225954

KEYWORDS: Semiconductor lasers, Optical fibers, Microlens, Micro optics, Optoelectronic packaging, High power diode lasers, Photoacoustic imaging, Photoacoustic spectroscopy, Endoscopy, Solid state lasers, Collimation, Mirrors, Cylindrical lenses, Tissues, Nd:YAG lasers

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Proceedings Article | 24 February 2009 Paper

Monolithic ring resonator with PPLN crystal for efficient cw SHG of 976 nm emitted by a diode laser

Danilo Skoczowsky, Andreas Jechow, Herbert Stürmer, Torsten Poßner, Sandra Stry, Joachim Sacher, Ralf Menzel

Proceedings Volume 7197, 71970K (2009) https://doi.org/10.1117/12.809242

KEYWORDS: Second-harmonic generation, Resonators, Semiconductor lasers, Crystals, Infrared radiation, Mirrors, GRIN lenses, Laser crystals, Diffraction, Diodes

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Proceedings Article | 1 February 2007 Paper

Widely tuneable ultra stable 1W two color THz laser source

Sandra Stry, Joachim Sacher

Proceedings Volume 6472, 64720H (2007) https://doi.org/10.1117/12.701951

KEYWORDS: Terahertz radiation, Semiconductor lasers, Optical amplifiers, Modulation, Fabry–Perot interferometers, Laser stabilization, Laser systems engineering, Optical isolators, Laser applications, Tunable lasers

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Proceedings Article | 22 February 2006 Paper

High-frequency tuning of high-powered DFB MOPA system with diffraction limited power up to 1.5W

Joachim Sacher, Richard Knispel, Sandra Stry

Proceedings Volume 6133, 613319 (2006) https://doi.org/10.1117/12.646367

KEYWORDS: Modulation, Optical amplifiers, Semiconductor lasers, Terahertz radiation, Laser systems engineering, Optical isolators, Frequency modulation, Fiber Bragg gratings, Diffraction, Spectroscopy

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Proceedings Article | 15 February 2006 Paper

Compact tunable diode laser with diffraction limited 1000 mW in Littman/Metcalf configuration for cavity ring-down spectroscopy

Sandra Stry, Joachim Sacher, Sven Thelen, Daniel Halmer, Peter Hering, Manfred Mürtz

Proceedings Volume 6104, 610410 (2006) https://doi.org/10.1117/12.646315

KEYWORDS: Semiconductor lasers, Laser systems engineering, Diodes, Spectroscopy, High power lasers, Resonators, Tunable lasers, Light sources, Absorption, Modulation

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Proceedings Article | 1 September 2004 Paper

Compact tunable external cavity diode laser with diffraction-limited 1 W optical power, and it's application in BEC and CRDS

Sandra Stry, Lars Hildebrandt, Joachim Sacher

Proceedings Volume 5452, (2004) https://doi.org/10.1117/12.545544

KEYWORDS: Semiconductor lasers, High power lasers, Laser systems engineering, Absorption, Spectroscopy, Chemical species, Diodes, Light sources, High power diode lasers, Resonators

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Proceedings Article | 1 June 2004 Paper

Compact tunable diode laser with diffraction-limited 1 Watt for atom cooling and trapping

Sandra Stry, Lars Hildebrandt, Joachim Sacher, Christian Buggle, Mark Kemmann, Wolf von Klitzing

Proceedings Volume 5336, (2004) https://doi.org/10.1117/12.525059

KEYWORDS: High power lasers, Chemical species, Semiconductor lasers, Laser systems engineering, Modulation, Rubidium, Tunable lasers, Single mode fibers, Laser stabilization, Diodes

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Showing 5 of 25 publications

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