Highly Efficient Amplified Stimulated Emission from CdSe-CdS-ZnS Quantum Dot Doped Waveguides with Two-Photon Infrared Optical Pumping

2008 ◽  
Vol 20 (1) ◽  
pp. 69-73 ◽  
Author(s):  
J. J. Jasieniak ◽  
I. Fortunati ◽  
S. Gardin ◽  
R. Signorini ◽  
R. Bozio ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Optical Pumping ◽  
Stimulated Emission ◽  
Two Photon ◽  
Highly Efficient ◽  
Amplified Stimulated Emission

scholarly journals Субмонослойные квантовые точки InGaAs/GaAs, выращенные методом МОС-гидридной эпитаксии

2019 ◽  
Vol 53 (8) ◽  
pp. 1159
Author(s):  
В.Я. Алешкин ◽  
Н.В. Байдусь ◽  
А.А. Дубинов ◽  
К.Е. Кудрявцев ◽  
С.М. Некоркин ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Room Temperature ◽  
Optical Pumping ◽  
Liquid Nitrogen Temperature ◽  
Stimulated Emission ◽  
Threshold Power ◽  
Gaas Substrates ◽  
Dot Density ◽  
Hydride Epitaxy

AbstractThe mode of the growth of InGaAs quantum dots by MOS-hydride epitaxy on GaAs substrates without a deviation and with a deviation of 2° is selected for laser structures emitting at wavelengths above 1.2 μm at room temperature. As a result, a quantum-dot density of 4 × 10^10 cm^–2 is achieved. Stimulated emission is observed in laser structures with seven layers of quantum dots at a wavelength of 1.06 μm at liquid-nitrogen temperature. The threshold power density of optical pumping is about 5 kW/cm^2.

Stimulated emission in gallium phosphide excited by two‐photon optical pumping

1976 ◽  
Vol 47 (1) ◽  
pp. 229-231 ◽  
Author(s):  
F. Adduci ◽  
I. M. Catalano ◽  
A. Cingolani ◽  
A. Minafra
Keyword(s):  
Gallium Phosphide ◽  
Optical Pumping ◽  
Stimulated Emission ◽  
Two Photon

Recent Advances on Amplified Stimulated Emission of Lead Halide Perovskite Micro/Nanostructures

2020 ◽  
Vol 41 (12) ◽  
pp. 1479-1489
Author(s):  
Ling HUANG ◽  
◽  
Hao DONG ◽  
Feng-yan JIA ◽  
Ling-dong SUN ◽  
...  
Keyword(s):  
Stimulated Emission ◽  
Recent Advances ◽  
Halide Perovskite ◽  
Amplified Stimulated Emission ◽  
Lead Halide

scholarly journals Progresses on the Use of Two-Photon Absorption Laser Induced Fluorescence (TALIF) Diagnostics for Measuring Absolute Atomic Densities in Plasmas and Flames

Plasma ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 145-171
Author(s):  
Kristaq Gazeli ◽  
Guillaume Lombardi ◽  
Xavier Aubert ◽  
Corinne Y. Duluard ◽  
Swaminathan Prasanna ◽  
...  
Keyword(s):  
Optical Transition ◽  
Thin Film Deposition ◽  
Laser Induced Fluorescence ◽  
Film Deposition ◽  
Stimulated Emission ◽  
Photon Absorption ◽  
Collisional Quenching ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Wide Range

Recent developments in plasma science and technology have opened new areas of research both for fundamental purposes (e.g., description of key physical phenomena involved in laboratory plasmas) and novel applications (material synthesis, microelectronics, thin film deposition, biomedicine, environment, flow control, to name a few). With the increasing availability of advanced optical diagnostics (fast framing imaging, gas flow visualization, emission/absorption spectroscopy, etc.), a better understanding of the physicochemical processes taking place in different electrical discharges has been achieved. In this direction, the implementation of fast (ns) and ultrafast (ps and fs) lasers has been essential for the precise determination of the electron density and temperature, the axial and radial gradients of electric fields, the gas temperature, and the absolute density of ground-state reactive atoms and molecules in non-equilibrium plasmas. For those species, the use of laser-based spectroscopy has led to their in situ quantification with high temporal and spatial resolution, with excellent sensitivity. The present review is dedicated to the advances of two-photon absorption laser induced fluorescence (TALIF) techniques for the measurement of reactive species densities (particularly atoms such as N, H and O) in a wide range of pressures in plasmas and flames. The requirements for the appropriate implementation of TALIF techniques as well as their fundamental principles are presented based on representative published works. The limitations on the density determination imposed by different factors are also discussed. These may refer to the increasing pressure of the probed medium (leading to a significant collisional quenching of excited states), and other issues originating in the high instantaneous power density of the lasers used (such as photodissociation, amplified stimulated emission, and photoionization, resulting to the saturation of the optical transition of interest).

scholarly journals Guanidinium‐Assisted Surface Matrix Engineering for Highly Efficient Perovskite Quantum Dot Photovoltaics

2020 ◽  
Vol 32 (26) ◽  
pp. 2001906 ◽  
Author(s):  
Xufeng Ling ◽  
Jianyu Yuan ◽  
Xuliang Zhang ◽  
Yuli Qian ◽  
Shaik M. Zakeeruddin ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Highly Efficient

Stimulated emission effects in excitonic molecule luminescence of CuCl under resonant two-photon excitation

1977 ◽  
Vol 24 (12) ◽  
pp. 845-848 ◽  
Author(s):  
Masahiro Ojima ◽  
Yasuo Oka ◽  
Takashi Kushida ◽  
Shigeo Shionoya
Keyword(s):  
Stimulated Emission ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Excitation
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