Results 31 to 40 of about 132,317 (296)
Laser-diode-stimulated emission depletion microscopy [PDF]
, 2003 We report subdiffraction resolution in far-field fluorescence microscopy through laser-diode-stimulated emission depletion of molecular markers. The diode-generated focal intensities lead to a resolution improvement by similar to45% in both lateral ...
Dyba, M. +15 more
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
Stimulated Emission of Surface Plasmon Polaritons [PDF]
Physical Review Letters, 2008 8 pages; 3 ...
Noginov, M. A. +5 more
openaire +3 more sources
The problem of dating quartz 1 : Spectroscopic ionoluminescence of dose dependence [PDF]
, 2010 This work is partially supported by NERC studentship F008589/1.A suite of quartz samples of different provenances, irradiation, thermal and depositional histories were analysed using spectroscopic ionoluminescence (IL) to investigate variations in ...
Robinson, Ruth Alison Joyce +7 more
core +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
Controlling molecular broadband-emission by optical confinement [PDF]
, 2008 We investigate experimentally and theoretically the fluorescence emitted by molecular ensembles as well as spatially isolated, single molecules of an organic dye immobilized in a quasi-planar optical microresonator at room temperature.
Steiner, Mathias +5 more
core +1 more source