Results 21 to 30 of about 313,183 (286)
Opto-Electronic Advances, 2022 The optical nonlinearity in polycrystalline zinc selenide (ZnSe), excited with 775 nm, 1 kHz femtosecond laser pulses was investigated via the nonlinear transmission with material thickness and the Z scan technique.
Qianliang Li +4 more
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Field Emission and Emission-Stimulated Desorption of ZnO Nanomaterials
Applied Sciences, 2018 Compared with other field-emission nanomaterials, 1D ZnO nanomaterials have some unique properties—such as high melting point, high thermal and chemical stability, and ambient insensitivity—which means they have promising potential applications as field ...
Nannan Li, Xiaozhao Li, Baoqing Zeng
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Terahertz transient stimulated emission from doped silicon
APL Photonics, 2020 Transient-type stimulated emission in the terahertz (THz) frequency range has been achieved from phosphorus doped silicon crystals under optical excitation by a few-picosecond-long pulses generated by the infrared free electron lasers FELIX and CLIO. The
S. G. Pavlov +14 more
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St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2023 In the paper, a possibility of increasing the terahertz (THz) radiation intensity under optical interband pumping in the epitaxial GaAs layer doped with shallow donors has been studied.
Kharin Nikita +6 more
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Balancing the Number of Quantum Wells in HgCdTe/CdHgTe Heterostructures for Mid-Infrared Lasing
Nanomaterials, 2022 HgCdTe-based heterostructures with quantum wells (QWs) are a promising material for semiconductor lasers in the atmospheric transparency window (3–5 μm) thanks to the possibility of suppressing Auger recombination due to the no-parabolic law of carrier ...
Mikhail A. Fadeev +10 more
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Photonics, 2022 This study is devoted to the luminescence and stimulated emission properties of the ZnO hybrid structure, which is vertically aligned microcrystals with the [0001] crystallographic orientation and a pronounced hexagonal shape formed on a continuous layer
Andrey P. Tarasov +2 more
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Observation of Antinormally Ordered Hanbury-Brown--Twiss Correlations [PDF]
, 2004 We have measured antinormally ordered Hanbury-Brown--Twiss correlations for coherent states of electromagnetic field by using stimulated parametric down-conversion process.
Akihisa Tomita +7 more
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Understanding High-Gain Twin-Beam Sources Using Cascaded Stimulated Emission
Physical Review X, 2020 We present a new method for the spectral characterization of pulsed twin-beam sources in the high-gain regime, using cascaded stimulated emission. We show an implementation of this method for a periodically poled potassium titanyl phosphate spontaneous ...
Gil Triginer +7 more
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Optical Gain in Semiconducting Polymer Nano and Mesoparticles
Molecules, 2021 The presence of excited-states and charge-separated species was identified through UV and visible laser pump and visible/near-infrared probe femtosecond transient absorption spectroscopy in spin coated films of poly[N-9″-heptadecanyl-2,7-carbazole-alt-5 ...
Mark Geoghegan +8 more
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Stimulation Emission Depleted Photoacoustic
Optics Express, 2019 We demonstrate that the Stimulated Emission Depletion (STED) concept, which is usually invoked for fluorescence, can be extended to photoacoustic effects. When two-nanosecond pulses of exciting and stimulating light are synchronized, 80% of the acoustic signal generated through excited state absorption (ESA) can be quenched.
Seongho, Park +3 more
openaire +2 more sources