Results 261 to 270 of about 166,743 (295)
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Journal of the Optical Society of America B, 1996
Transient-grating techniques are used to investigate the picosecond dynamics of photoexcited carriers in a range of n- and p-doped ZnSe thin-film layers grown by molecular-beam epitaxy. Two-photon absorption is employed experimentally to generate known excitation levels, comparable with those under laser action in II–VI diode structures.
I. J. Blewett +3 more
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Transient-grating techniques are used to investigate the picosecond dynamics of photoexcited carriers in a range of n- and p-doped ZnSe thin-film layers grown by molecular-beam epitaxy. Two-photon absorption is employed experimentally to generate known excitation levels, comparable with those under laser action in II–VI diode structures.
I. J. Blewett +3 more
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Review of Scientific Instruments, 1981
An electro-optical pulse selection system for mode-locked cw lasers is described. The repetition rate of the exciting pulses can be chosen by electronically dividing the mode locker drive frequency. The shortest repetition time for pulse picking is 3 μs.
van Hoek, A., Visser, A.J.W.G.
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An electro-optical pulse selection system for mode-locked cw lasers is described. The repetition rate of the exciting pulses can be chosen by electronically dividing the mode locker drive frequency. The shortest repetition time for pulse picking is 3 μs.
van Hoek, A., Visser, A.J.W.G.
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The Journal of Physical Chemistry A, 1999
Degenerate four-wave mixing (DFWM) spectroscopy is modified to exploit femtosecond pulses, phase-sensitive-detection, frequency (wavelength) agility, two-color (nearly degenerate multiwave mixing) radiation, and improved signal-to-noise capabilities that can be realized through a combination of new solid state lasers, nonlinear optical components, and ...
K. A. Drenser +3 more
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Degenerate four-wave mixing (DFWM) spectroscopy is modified to exploit femtosecond pulses, phase-sensitive-detection, frequency (wavelength) agility, two-color (nearly degenerate multiwave mixing) radiation, and improved signal-to-noise capabilities that can be realized through a combination of new solid state lasers, nonlinear optical components, and ...
K. A. Drenser +3 more
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Optical Engineering, 2007
A new broadband filter, based on the high level bandgap in 1-D photonic crystals (PCs) of the form Si|air|Si|air|Si|air|Si|air|Si|air|Si is designed by the plane wave expansion method (PWEM) and the transfer matrix method (TMM) and fabricated by lithography.
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A new broadband filter, based on the high level bandgap in 1-D photonic crystals (PCs) of the form Si|air|Si|air|Si|air|Si|air|Si|air|Si is designed by the plane wave expansion method (PWEM) and the transfer matrix method (TMM) and fabricated by lithography.
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Physics Education
Abstract This article describes the application of instrumentation in the teaching of optics and photonics within the Physical Engineering program at the Federal University of Lavras in Brazil. The reported experience involved the revitalization and automation of an old and damaged spectrophotometer, which was transformed into a ...
Flavio Augusto de Melo Marques +6 more
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Abstract This article describes the application of instrumentation in the teaching of optics and photonics within the Physical Engineering program at the Federal University of Lavras in Brazil. The reported experience involved the revitalization and automation of an old and damaged spectrophotometer, which was transformed into a ...
Flavio Augusto de Melo Marques +6 more
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Microwave and Optical Technology Letters
AbstractIn this study, a novel freeform surface lens coupler is designed to realize the coupling functions in the hollow‐core photonic crystal fiber (HCPCF) resonator optical gyroscope. One surface of the lens is an ellipsoid. Coupling of the two HCPCF loop's ports can be directly accomplished via reflection on the ellipsoid surface.
Wen Fan +6 more
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AbstractIn this study, a novel freeform surface lens coupler is designed to realize the coupling functions in the hollow‐core photonic crystal fiber (HCPCF) resonator optical gyroscope. One surface of the lens is an ellipsoid. Coupling of the two HCPCF loop's ports can be directly accomplished via reflection on the ellipsoid surface.
Wen Fan +6 more
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An Improved Delay Time Of Optical Half-Adder Applying Nonlinear Photonic Crystals Technology
2023 2nd International Conference on Electronics, Energy and Measurement (IC2EM), 2023Bouaouina Mohamed Salah +1 more
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Applying the theory of quantum nonlinear multimode optics to optimising integrated photonic devices
Quantum integrated photonics seeks to generate and manipulate non-classical states of light, a critical resource for several emerging technologies, including quantum computing and cryptography. Integrated photonic devices can leverage the stability of a solid-state platform, as well as the mature design and manufacturing capabilities of the optics ...openaire +1 more source
Graphene Oxide for Integrated Photonics and Flat Optics
Advanced Materials, 2021Jiayang Wu, Yuning Zhang, Yang Qu
exaly