Prof. Aleksander K. Rebane Profile

Prof. Aleksander K. Rebane

Professor at Montana State Univ

SPIE Involvement:

Conference Program Committee | Author

Publications (58)

PROCEEDINGS ARTICLE | March 14, 2018

Self-induced transparency and soliton formation in ruby: simulations and experiment (Conference Presentation)

Proc. SPIE. 10547, Advances in Photonics of Quantum Computing, Memory, and Communication XI

KEYWORDS: Transparency, Ruby, Magnetism, Solitons, Computer simulations, Transform theory, Optical simulations, Optical solitons, Temperature metrology, Absorption

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PROCEEDINGS ARTICLE | February 23, 2018

Improved reference standards for femtosecond three-photon excitation of fluorescence in the wavelength range 950 - 1750 nm

Proc. SPIE. 10498, Multiphoton Microscopy in the Biomedical Sciences XVIII

KEYWORDS: Femtosecond phenomena, Spectroscopy, Fluorescence spectroscopy, Chromophores, Harmonic generation, Absorption

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Fluorescence excited by instantaneous three-photon absorption (3PA) in organic fluorophores is gaining importance as a versatile modality for deep-tissue microscopy and imaging. However, due to technical difficulty of quantifying the higher-order nonlinear absorption cross-section, reliable 3PA cross section values, σ_3PA, covering a broad spectral range have been so far not available. This lack of experimental data hinders us from gaining quantitative understanding of relevant structure-property relationships as well as impedes progress towards developing 3-photon fluorophores optimized for various applications. We report on measurement of the absolute 3PA cross section spectra in the 950 – 1750 nm range in a series of common organic fluorophores in various solvents: (a) Rhodamine 6G in deuterated methanol, (b) Coumarin 153 in DMSO and toluene, (c) Prodan in DMSO and toluene, (d) Fluorescein in pH11 buffer, (e) AF455 in toluene, (f) BDPAS in deuterated methylene chloride. In these experiments, we employ femtosecond wavelength-tunable optical parametric amplifier to excite fluorescence signal that has cubic dependence on the incident photon flux. Absolute values of σ3PA are determined using two complementary methods: (i) calibrating the fluorescence signal relative to one-photon (linear) excitation combined with accurate measurement of the pulse temporal- and spatial profile to determine the excitation photon flux and (ii) calibration of the cubic fluorescence signal relative to quadratic florescence excited in fluorophores with known two-photon absorption cross section. Depending on the method utilized, the peak σ_3PA values have estimated accuracy 50% and vary in the range, σ_3PA = 10^-81 - 10^-79 cm⁶ s² photon^-2 , depending on the system studied, with AF455 showing the most enhanced 3PA efficiency. The 3PA spectral shapes have estimated accuracy of 20% and show some unexpected deviations from corresponding one-photon spectral profiles.

PROCEEDINGS ARTICLE | February 21, 2018

Probing metal-to-ligand charge transfer transitions in ruthenium complexes by quantitative two-photon absorption spectroscopy

Proc. SPIE. 10529, Organic Photonic Materials and Devices XX

KEYWORDS: Spectroscopy, Luminescence, Quantum efficiency, Transition metals, Absorption spectroscopy, Ruthenium, Absorption

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PROCEEDINGS ARTICLE | February 21, 2018

Polarized light scattering by macromolecular self-assembly of J-aggregates

Proc. SPIE. 10529, Organic Photonic Materials and Devices XX

KEYWORDS: Polarization, Scattering, Light scattering, Laser scattering, Absorbance, Helium neon lasers, Absorption

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PROCEEDINGS ARTICLE | February 21, 2017

Femtosecond two-photon absorption spectra and permanent electric dipole moment change of tryptophan, 2-aminopurine and related intrinsic and synthetic fluorophores

Proc. SPIE. 10069, Multiphoton Microscopy in the Biomedical Sciences XVII

KEYWORDS: Femtosecond phenomena, Multiphoton microscopy, Water, Spectroscopy, Microscopy, Luminescence, Molecules, Chromophores, Signal processing, Solids, Analog electronics, Signal detection, Absorption

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PROCEEDINGS ARTICLE | February 21, 2017

Optimizing ultrafast wide field-of-view illumination for high-throughput multi-photon imaging and screening of mutant fluorescent proteins

Proc. SPIE. 10069, Multiphoton Microscopy in the Biomedical Sciences XVII

KEYWORDS: Signal to noise ratio, Optical amplifiers, Femtosecond phenomena, Multiphoton microscopy, Imaging systems, Microscopy, Luminescence, Chromophores, Fluorescent proteins, Neuroimaging, Signal detection, Pulsed laser operation, Ultrafast imaging, Absorption, Brain

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PROCEEDINGS ARTICLE | February 17, 2017

Improving the fidelity of two-photon absorption reference standards

Proc. SPIE. 10094, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVII

KEYWORDS: Ultrafast phenomena, Optical filters, Femtosecond phenomena, Glasses, Spectroscopy, Error analysis, Fluorescence spectroscopy, Quantum efficiency, Chromophores, Absorbance, Laser-matter interactions, Absorption

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PROCEEDINGS ARTICLE | February 16, 2017

Change of electric dipole moment in charge transfer transitions of ferrocene oligomers studied by ultrafast two-photon absorption

Proc. SPIE. 10101, Organic Photonic Materials and Devices XIX

KEYWORDS: Optical imaging, Ultrafast phenomena, Femtosecond phenomena, Oscillators, Iron, Chemical species, Polymers, Metals, Spectroscopy, Transition metals, Chromophores, Nonlinear dynamics, Absorption spectroscopy, Optical switching, Microfabrication, Ultrafast imaging, Absorption

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PROCEEDINGS ARTICLE | September 23, 2016

The fluorescence of a chelating two-photon-absorbing dye is enhanced with the addition of transition metal ions but quenched in the presence of acid

Proc. SPIE. 9939, Light Manipulating Organic Materials and Devices III

KEYWORDS: Sensors, Metals, Luminescence, Molecules, Copper, Ions, Quantum efficiency, Solids, Printed circuit board testing, Absorption, Absorption

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PROCEEDINGS ARTICLE | September 23, 2016

Femtosecond light-induced macromolecular self-assembly

Proc. SPIE. 9939, Light Manipulating Organic Materials and Devices III

KEYWORDS: Laser sources, Optical amplifiers, Femtosecond phenomena, Nd:YAG lasers, Laser scattering, Laser beam propagation, Beam shaping, Photonic integrated circuits, Molecular aggregates, Absorption

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PROCEEDINGS ARTICLE | March 7, 2014

Two-photon solvatochromism of 4-dimethylamino-4'-nitrostilbene (DANS)

Proc. SPIE. 8983, Organic Photonic Materials and Devices XVI

KEYWORDS: Femtosecond phenomena, Spectroscopy, Luminescence, Error analysis, Dielectrics, Chromophores, Nonlinear optics, Absorbance, Mass attenuation coefficient, Absorption

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PROCEEDINGS ARTICLE | March 5, 2014

A multidimensional screening method for the selection of two-photon enhanced fluorescent proteins

Proc. SPIE. 8956, Reporters, Markers, Dyes, Nanoparticles, and Molecular Probes for Biomedical Applications VI

KEYWORDS: Microscopes, Optical filters, Proteins, Femtosecond phenomena, Luminescence, Lamps, Fluorescent proteins, Two photon excitation microscopy, Absorption, Bacteria

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PROCEEDINGS ARTICLE | March 6, 2013

Modified p-phenylene vinylene platinum (II) acetylides with enhanced two-photon absorption in solid host

Proc. SPIE. 8622, Organic Photonic Materials and Devices XV

KEYWORDS: Femtosecond phenomena, Polymethylmethacrylate, Transient nonlinear optics, Luminescence, Platinum, Chromophores, Solids, Absorbance, Signal detection, Absorption

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PROCEEDINGS ARTICLE | March 1, 2010

Modeling of non-Lorentzian two-photon absorption line shape in dipolar chromophore

Proc. SPIE. 7599, Organic Photonic Materials and Devices XII

KEYWORDS: Oscillators, Data modeling, Luminescence, Molecules, Chromophores, Numerical analysis, Solids, Motion models, Stochastic processes, Absorption

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PROCEEDINGS ARTICLE | March 1, 2010

Maximizing two-photon absorption cross section within few essential state model

Proc. SPIE. 7599, Organic Photonic Materials and Devices XII

KEYWORDS: Optical amplifiers, Sensors, Spectroscopy, Luminescence, Molecules, Quantum efficiency, Chromophores, Dendrimers, Systems modeling, Absorption

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PROCEEDINGS ARTICLE | March 1, 2010

Justification of two-level approximation for description of two-photon absorption in oxazine dyes

Proc. SPIE. 7599, Organic Photonic Materials and Devices XII

KEYWORDS: Refractive index, Optical amplifiers, Spectroscopy, Luminescence, Molecules, Hydrogen, Chemical analysis, Molecular interactions, Hole burning spectroscopy, Absorption

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PROCEEDINGS ARTICLE | February 15, 2010

Maximum coherence in optical transitions in rare-earth-ion-activated solids

Proc. SPIE. 7611, Advances in Photonics of Quantum Computing, Memory, and Communication III

KEYWORDS: Oscillators, Coherence (optics), Crystals, Ions, Diffusion, Magnetism, Solids, Phonons, Quantum information, Absorption

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PROCEEDINGS ARTICLE | August 21, 2009

Hyperspectral two-photon near-infrared cancer imaging in vitro and in vivo

Proc. SPIE. 7413, Linear and Nonlinear Optics of Organic Materials IX

KEYWORDS: Two photon imaging, Cancer, Tumors, Tissues, Luminescence, Diagnostics, Collagen, In vivo imaging, Environmental sensing, Absorption

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PROCEEDINGS ARTICLE | July 13, 2009

Targeted two-photon PDT photo-sensitizers for the treatment of subcutaneous tumors

Proc. SPIE. 7380, Photodynamic Therapy: Back to the Future

KEYWORDS: Near infrared, Photodynamic therapy, Tumors, Tissues, Skin, Oxygen, Receptors, Chlorine, Laser tissue interaction, Absorption

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PROCEEDINGS ARTICLE | July 13, 2009

Hyperspectral two-photon near-infrared cancer imaging at depth

Proc. SPIE. 7380, Photodynamic Therapy: Back to the Future

KEYWORDS: Cancer, Tumors, Tissues, Luminescence, Diagnostics, Collagen, CCD cameras, Tissue optics, Environmental sensing, Absorption

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PROCEEDINGS ARTICLE | February 13, 2009

Searching for the two-photon brightest red fluorescent protein and its optimum excitation wavelength

Proc. SPIE. 7191, Fluorescence In Vivo Imaging Based on Genetically Engineered Probes: From Living Cells to Whole Body Imaging IV

KEYWORDS: Refractive index, Proteins, Green fluorescent protein, Luminescence, Quantum efficiency, Chromophores, Absorbance, Fluorescent proteins, Mass attenuation coefficient, Absorption

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PROCEEDINGS ARTICLE | February 12, 2009

Two-photon absorption spectroscopy of corroles

Proc. SPIE. 7213, Organic Photonic Materials and Devices XI

KEYWORDS: Optical amplifiers, Femtosecond phenomena, Photodynamic therapy, Chemical species, Luminescence, Molecules, Chemistry, Wavelength tuning, Absorption spectroscopy, Absorption

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PROCEEDINGS ARTICLE | September 2, 2008

Environment-sensitive two-photon dye

Proc. SPIE. 7049, Linear and Nonlinear Optics of Organic Materials VIII

KEYWORDS: Optical filters, Scattering, Sensors, Spectroscopy, Microscopy, Luminescence, Bioalcohols, Chromophores, Environmental sensing, Absorption

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PROCEEDINGS ARTICLE | September 2, 2008

Quantitative description of two-photon absorption with few essential states models

Proc. SPIE. 7049, Linear and Nonlinear Optics of Organic Materials VIII

KEYWORDS: Femtosecond phenomena, Satellites, Spectroscopy, Luminescence, Molecules, Fluorescence anisotropy, Constructive interference, Chromophores, Resonance enhancement, Absorption

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PROCEEDINGS ARTICLE | February 12, 2008

Two-photon absorption standards in the 550-1600 nm excitation range: establishing a correction curve for accurate cross section calibration

Proc. SPIE. 6891, Organic Photonic Materials and Devices X

KEYWORDS: Optical amplifiers, Sensors, Calibration, Luminescence, Error analysis, Quantum efficiency, Laser scattering, Pulsed laser operation, Rhodamine, Absorption

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PROCEEDINGS ARTICLE | February 11, 2008

Histopathological and expression profiling studies of early tumor responses to near-infrared PDT treatment in SCID mice

Proc. SPIE. 6845, Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy XVII

KEYWORDS: Near infrared, Photodynamic therapy, Tumors, Tissues, Lung, Spleen, Oxygen, Profiling, Blood circulation, Receptors

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PROCEEDINGS ARTICLE | February 11, 2008

Synthesis, characterization and two-photon PDT efficacy studies of triads incorporating tumor targeting and imaging components

Proc. SPIE. 6845, Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy XVII

KEYWORDS: Photodynamic therapy, Tumor growth modeling, Breast cancer, Tumors, Skin, Receptors, Lung cancer, Chlorine, Laser tissue interaction, Absorption

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PROCEEDINGS ARTICLE | January 29, 2008

Narrowing of the homogeneous two-photon absorption line width in two-level dipolar system

Proc. SPIE. 6903, Advanced Optical Concepts in Quantum Computing, Memory, and Communication

KEYWORDS: Oscillators, Transient nonlinear optics, Modulation, Molecules, Complex systems, Solids, Terahertz radiation, Quantum memory, Quantum computing, Absorption

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PROCEEDINGS ARTICLE | September 28, 2007

Broad bandwidth near-IR two-photon absorption in conjugated porphyrin-core dendrimers

Proc. SPIE. 6653, Linear and Nonlinear Optics of Organic Materials VII

KEYWORDS: Optical amplifiers, Luminescence, Molecules, Chromophores, Resonance energy transfer, Time resolved spectroscopy, Fluorescence resonance energy transfer, Dendrimers, Resonance enhancement, Absorption

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PROCEEDINGS ARTICLE | July 9, 2007

Fluorescence from upper excited states of porphyrins with one- and two-photon excitation

Proc. SPIE. 6727, ICONO 2007: Nonlinear Laser Spectroscopy and High-Precision Measurements; and Fundamentals of Laser Chemistry and Biophotonics

KEYWORDS: Atomic, molecular, and optical physics, Optical amplifiers, Spectroscopy, Luminescence, Molecules, Fluorescence spectroscopy, Quantum efficiency, Zinc, Molecular photonics, Absorption

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PROCEEDINGS ARTICLE | February 8, 2007

Resonance enhancement of two-photon absorption of phthalocyanines for 3D optical storage in the presence of hot-band absorption

Proc. SPIE. 6470, Organic Photonic Materials and Devices IX

KEYWORDS: Signal to noise ratio, Femtosecond phenomena, Luminescence, Molecules, Quantum efficiency, Palladium, Optical storage, Resonance enhancement, Temperature metrology, Absorption

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PROCEEDINGS ARTICLE | September 14, 2006

Experimental characterization of two-photon materials for fast rewritable optical data storage

Proc. SPIE. 6330, Nonlinear Optical Transmission and Multiphoton Processes in Organics IV

KEYWORDS: Signal to noise ratio, Femtosecond phenomena, Luminescence, Molecules, Quantum efficiency, Optical storage, Optical discs, Resonance enhancement, Temperature metrology, Absorption

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PROCEEDINGS ARTICLE | August 29, 2006

Phthalocyanine molecules with extremely strong two-photon absorption for 3D rewritable optical information storage

Proc. SPIE. 6308, Photonics for Space Environments XI

KEYWORDS: Signal to noise ratio, Femtosecond phenomena, Data storage, Luminescence, Molecules, Quantum efficiency, Signal processing, Cadmium sulfide, Pulsed laser operation, Absorption

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PROCEEDINGS ARTICLE | March 6, 2006

Synthesis, characterization, and preclinical studies of two-photon-activated targeted PDT therapeutic triads

Proc. SPIE. 6139, Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy XV

KEYWORDS: Near infrared, Photodynamic therapy, Breast cancer, Tumors, Tissues, Skin, Molecules, Collagen, Receptors, Bioluminescence

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Photodynamic therapy (PDT) continues to evolve into a mature clinical treatment of a variety of cancer types as well as age-related macular degeneration of the eye. However, there are still aspects of PDT that need to be improved in order for greater clinical acceptance. While a number of new PDT photo-sensitizers, sometimes referred to as second- or third- generation therapeutic agents, are currently under clinical investigation, the direct treatment through the skin of subcutaneous tumors deeper than 5 mm remains problematic. Currently approved PDT porphyrin photo-sensitizers, as well as several modified porphyrins (e.g. chlorins, bacteriochlorins, etc.) that are under clinical investigation can be activated at 630-730 nm, but none above 800 nm. It would be highly desirable if new PDT paradigms could be developed that would allow photo-activation deep in the tissue transparency window in the Near-infrared (NIR) above 800 nm to reduce scattering and absorption phenomena that reduce deep tissue PDT efficacy. Rasiris and MPA Technologies have developed new porphyrins that have greatly enhanced two-photon absorption ( P A ) cross-sections and can be activated deep in the NIR (ca. 780-850 nm). These porphyrins can be incorporated into a therapeutic triad that also employs an small molecule targeting agent that directs the triad to over-expressed tumor receptor sites, and a NIR onephoton imaging agent that allows tracking the delivery of the triad to the tumor site, as well as clearance of excess triad from healthy tissue prior to the start of PDT treatment. We are currently using these new triads in efficacy studies with a breast cancer cell line that has been transfected with luciferase genes that allow implanted tumor growth and post- PDT treatment efficacy studies in SCID mouse models by following the rise and decay of the bioluminescence signal. We have also designed highly absorbing and scattering collagen breast cancer phantoms in which we have demonstrated dramatic cell kill to a depth of at least 4 cm. We have also demonstrated that at the wavelength and laser fluences used in the treatment of implanted tumors in the mouse mammary fat pads, there is little, if any, damage to the skin or internal mouse organs. In addition, we have also demonstrated that the implanted tumors can be treated to a depth of more than 1 cm by direct radiation through the dorsal side of the mouse.

PROCEEDINGS ARTICLE | August 19, 2005

Quantum interference in femtosecond multi-photon absorption in conjugated dendrimers

Proc. SPIE. 5934, Nonlinear Optical Transmission and Multiphoton Processes in Organics III

KEYWORDS: Beam splitters, Femtosecond phenomena, Ultraviolet radiation, Luminescence, Photons, Molecules, Solids, Dendrimers, Signal detection, Absorption

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PROCEEDINGS ARTICLE | August 18, 2005

Coherent domain structure in linear and dendrimer chromophores studied by one-, two-, and three-photon absorption spectroscopy

Proc. SPIE. 5934, Nonlinear Optical Transmission and Multiphoton Processes in Organics III

KEYWORDS: Oscillators, Luminescence, Molecules, Macromolecules, Nitrogen, Chromophores, Bridges, Absorption spectroscopy, Dendrimers, Absorption

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PROCEEDINGS ARTICLE | April 8, 2005

Targeted two-photon photodynamic therapy for the treatment of subcutaneous tumors

Proc. SPIE. 5689, Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy XIV

KEYWORDS: Near infrared, Transparency, Photodynamic therapy, Breast cancer, Tumors, Tissues, Skin, Molecules, Receptors, In vivo imaging

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Photodynamic therapy (PDT) has developed into a mature technology over the past several years, and is currently being exploited for the treatment of a variety of cancerous tumors, and more recently for age-related wet macular degeneration of the eye. However, there are still some unresolved problems with PDT that are retarding a more general acceptance in clinical settings, and thus, for the most part, the treatment of most cancerous rumors still involves some combination of invasive surgery, chemotherapy and radiation treatment, particularly subcutaneous tumors. Currently approved PDT agents are activated in the Visible portion of the spectrum below 700 nm, Laser light in this spectral region cannot penetrate the skin more than a few millimeters, and it would be more desirable if PDT could be initiated deep in the Near-infrared (NIR) in the tissue transparency window (700-1000 nm). MPA Technologies, Inc. and Rasiris, Inc. have been co-developing new porphyrin PDT designed to have greatly enhanced intrinsic two-photon cross-sections (>800 GM units) whose two-photon absorption maxima lie deep in the tissue transparency window (ca. 780-850 nm), and have solubility characteristics that would allow for direct IV injection into animal models. Classical PDT also suffers from the lengthy time necessary for accumulation at the tumor site, a relative lack of discrimination between healthy and diseased tissue, particularly at the tumor margins, and difficulty in clearing from the system in a reasonable amount of time post-PDT. We have recently discovered a new design paradigm for the delivery of our two-photon activated PDT agents by incorporating the porphyrins into a triad ensemble that includes a small molecule targeting agent that directs the triad to over-expressed tumor receptor sites, and a NIR one-photon imaging agent that allows the tracking of the triad in terms of accumulation and clearance rates. We are currently using these new two-photon PDT triads in efficacy studies with two breast cancer cell lines, both in vitro and in vivo. Both of these cell lines have been transfected with luciferase genes that allow implanted tumor growth and PDT efficacy to be monitored in living mouse models over time by following the rise and decay of the bioluminescence signals.

PROCEEDINGS ARTICLE | June 17, 2004

New two-photon materials for fast volumetric rewritable optical storage

Proc. SPIE. 5362, Advanced Optical and Quantum Memories and Computing

KEYWORDS: Switches, Oscillators, Switching, Data storage, Luminescence, Molecules, Quantum efficiency, Chromophores, Optical storage, Absorption

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PROCEEDINGS ARTICLE | June 1, 2004

Nanophotonic ensembles for targeted multi-photon photodynamic therapy

Proc. SPIE. 5331, Nanobiophotonics and Biomedical Applications

KEYWORDS: Near infrared, Photodynamic therapy, Tumors, Tissues, Molecules, Therapeutic agents, Receptors, Chlorine, Analog electronics, Absorption

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PROCEEDINGS ARTICLE | November 3, 2003

Cooperative enhancement of two- and three-photon absorption in dendrimers and their underlying coherent domain structure

Proc. SPIE. 5211, Nonlinear Optical Transmission and Multiphoton Processes in Organics

KEYWORDS: Oscillators, Spectroscopy, Luminescence, Molecules, Macromolecules, Nitrogen, Chromophores, Dendrimers, Near field optics, Absorption

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PROCEEDINGS ARTICLE | November 3, 2003

Strong two-photon absorption in new porphyrins with asymmetrical meso-substitution

Proc. SPIE. 5211, Nonlinear Optical Transmission and Multiphoton Processes in Organics

KEYWORDS: Atomic, molecular, and optical physics, Optical amplifiers, Oscillators, Photodynamic therapy, Luminescence, Molecules, Physics, Oxygen, Dendrimers, Absorption

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PROCEEDINGS ARTICLE | February 14, 2003

Mechanisms of enhanced two-photon absorption in porphyrins

Proc. SPIE. 4797, Multiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications

KEYWORDS: Electronics, Optical amplifiers, Satellites, Luminescence, Molecules, Zinc, Chromophores, Solids, Resonance enhancement, Absorption

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PROCEEDINGS ARTICLE | February 14, 2003

Design, synthesis, and characterization of new organic dendrimers with greatly enhanced two-photon absorption

Proc. SPIE. 4797, Multiphoton Absorption and Nonlinear Transmission Processes: Materials, Theory, and Applications

KEYWORDS: Materials processing, Chromophores, Dendrimers, Bromine, Americium, Multiphoton processes, Absorption

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PROCEEDINGS ARTICLE | June 6, 2002

Strong two-photon absorption and singlet oxygen photogeneration in near-IR with new porphyrin molecule

Proc. SPIE. 4612, Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy XI

KEYWORDS: Transparency, Photodynamic therapy, Tumors, Tissues, Luminescence, Molecules, Oxygen, Solids, Information operations, Absorption

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PROCEEDINGS ARTICLE | April 12, 2001

Femtosecond IR supercontinuum generation in condensed media

Proc. SPIE. 4271, Optical Pulse and Beam Propagation III

KEYWORDS: Femtosecond phenomena, Transient nonlinear optics, Modulation, Silica, Dielectrics, Numerical simulations, Raman spectroscopy, Raman scattering, Supercontinuum generation, Laser systems engineering

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PROCEEDINGS ARTICLE | February 18, 2000

SRS generation and amplification of femtosecond pulses in compressed gases

Proc. SPIE. 4069, Raman Scattering

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PROCEEDINGS ARTICLE | November 5, 1998

Organic frequency-selective materials for ultrafast optical storage and processing

Proc. SPIE. 3468, Advanced Optical Memories and Interfaces to Computer Storage

KEYWORDS: Ultrafast phenomena, Holograms, Holography, Switching, Polymers, Molecules, Picosecond phenomena, Hole burning spectroscopy, Optical storage, Absorption

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PROCEEDINGS ARTICLE | September 26, 1997

Spatial and angular properties of the photon echo and angular spectroscopy possibility

Proc. SPIE. 3239, Photon Echo and Coherent Spectroscopy

KEYWORDS: Modulation, Spectroscopy, Crystals, Photonic crystals

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PROCEEDINGS ARTICLE | September 1, 1996

Time-and-space-domain holography in frequency-selective spectral hole burning materials

Proc. SPIE. 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology

KEYWORDS: Holograms, Holography, Oscillators, Digital holography, Photons, Molecules, Solids, Hole burning spectroscopy, Absorption

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PROCEEDINGS ARTICLE | May 10, 1996

Amplification of femtosecond signals by stimulated Raman scattering in hydrogen gas

Proc. SPIE. 2700, Nonlinear Frequency Generation and Conversion

KEYWORDS: Optical amplifiers, Femtosecond phenomena, Glasses, Silicon, Hydrogen, Raman spectroscopy, Signal processing, Raman scattering, Sapphire lasers, Picosecond phenomena

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PROCEEDINGS ARTICLE | May 10, 1996

Stimulated Raman scattering by frequency-doubled 1-kHz amplified femtosecond Ti:sapphire laser in H2, D2, HD, and CH4 gases

Proc. SPIE. 2700, Nonlinear Frequency Generation and Conversion

KEYWORDS: Telescopes, Second-harmonic generation, Femtosecond phenomena, Polarization, Crystals, Silicon, Gases, Solids, Raman scattering, Sapphire lasers

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PROCEEDINGS ARTICLE | May 10, 1996

Vibrational and rotational stimulated Raman scattering in hydrogen by 1-kHz amplified femtosecond Ti:sapphire laser

Proc. SPIE. 2797, Nonlinear Spectroscopy and Ultrafast Phenomena

KEYWORDS: Energy efficiency, Second-harmonic generation, Femtosecond phenomena, Polarization, Crystals, Hydrogen, Solids, Raman scattering, Sapphire lasers, Picosecond phenomena

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PROCEEDINGS ARTICLE | May 10, 1996

Noncollinear parametric generation and amplification in LiIO3 and Beta-barium borate by frequency-doubled femtosecond Ti:sapphire laser pulses

Proc. SPIE. 2797, Nonlinear Spectroscopy and Ultrafast Phenomena

KEYWORDS: Femtosecond phenomena, Crystals, Wave propagation, Solids, Phase matching, Sapphire lasers, Laser crystals, Signal generators, Nonlinear crystals, Beam propagation method

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PROCEEDINGS ARTICLE | May 8, 1996

Second, third, and fourth harmonic generation of amplified femtosecond Ti:sapphire laser pulses

Proc. SPIE. 2701, Generation, Amplification, and Measurement of Ultrashort Laser Pulses III

KEYWORDS: Second-harmonic generation, Femtosecond phenomena, Phase modulation, Modulation, Crystals, Phase matching, Sapphire lasers, Picosecond phenomena, Harmonic generation, Nonlinear crystals

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SPIE Journal Paper | July 1, 1995

Waveguide narrowband optical filter using spectral hole burning

Tschanz, Marcel , Rebane, Aleksander , Wild, Urs

OE Vol. 34 Issue 07

KEYWORDS: Waveguides, Optical filters, Molecules, Combustion, Hole burning spectroscopy, Picosecond phenomena, Semiconductor lasers, Laser beam diagnostics, Absorption, Chromophores

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PROCEEDINGS ARTICLE | March 23, 1995

Sensitivity of silver-halide emulsions at exposure durations 10 2 -10 -13 seconds

Proc. SPIE. 2405, Holographic Materials

KEYWORDS: Ultrafast phenomena, Laser sources, Femtosecond phenomena, Image processing, Silver, Photography, Microelectronics, Pulsed laser operation, Information operations, Absorption

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PROCEEDINGS ARTICLE | July 28, 1994

Narrow-band planar waveguide transmission filter using spectral hole-burning

Proc. SPIE. 2213, Nanofabrication Technologies and Device Integration

KEYWORDS: Optical filters, Waveguides, Molecules, Combustion, Chromophores, Integrated optics, Planar waveguides, Hole burning spectroscopy, Laser beam diagnostics, Absorption

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PROCEEDINGS ARTICLE | November 1, 1991

Optical implementation of a Hopfield-type neural network by the use of persistent spectral hole-burning media

Proc. SPIE. 1621, Optical Memory and Neural Networks

KEYWORDS: Holograms, Holography, Matrices, Streak cameras, Neural networks, Monochromators, Hole burning spectroscopy, Optical storage, Content addressable memory, Absorption

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