Results 31 to 40 of about 29,139 (290)

Quantum cascade lasers with an integrated polarization mode converter [PDF]

, 2012
We discuss the design, fabrication and characterization of waveguide polarization mode converters for quantum cascade lasers operating at 4.6 μm. We have fabricated a quantum cascade laser with integrated polarization mode converter that emits light of ...
Dhirhe, D., Holmes, B.M., Hutchings, D.C., Ironside, C.N., Slight, T.J.   +4 more
core   +2 more sources

Fabrication of GO/NH4NO3 composite films by vacuum filtration as laser converter for enhanced photothermal performance

Energetic Materials Frontiers, 2020
Graphene-based materials have been extensively investigated as light converters for photothermal therapy, energy harvesting, and laser ignition owing to their good light absorption and high thermal conductivity.
Jing Liu, Yong Zhang, Junyu Piao, Jun Liao, Nan Wang, Xiaodong He, Long Zhang   +6 more
doaj   +1 more source

Quasi-continuous time-stretched photon Doppler velocimetry

Frontiers in Physics, 2022
In transient high-speed scenes such as chemical explosions, magnetic compression, electric explosion, and laser-driven flyer, the target object can accelerate from 0 to tens of km/s in a few nanoseconds. The time-stretched photon Doppler velocimetry uses
Linjie Lv, Linjie Lv, Yongjun Yang, Tengfei Wu, Jibo Han, Jibo Han, Pengmou Ma, Xiangmiao Chen, Abdul Qayyum Khan   +8 more
doaj   +1 more source

Wavelength conversion at 10 Gb/s by four-wave mixing over a 30-nm interval [PDF]

, 1998
We show that the use of a long semiconductor optical amplifier increases the error-free conversion interval of a four-wave mixing (FWM)-based wavelength converter.
D'Ottavi, A., Dall'Ara, R., Guekos, G., Hunziker, G., Paiella, R., Spano, P., Vahala, K. J.   +6 more
core   +1 more source

Optimal I–V Curve Scan Time for a GaAs Laser Power Converter

Photonics, 2023
Current–voltage (I–V) curve measurement is an essential performance characterization technique for laser power converters (LPCs). Choosing an appropriate scan time can effectively avoid problems in the test process that lead to inaccurate data.
Yihao Zhang, Chenggang Guan, Wenxiu Chu, Yikai Zhou, Ruling Zhou, Yucheng Yao   +5 more
doaj   +1 more source

Lowering operating temperatures in high-power laser-excited LuAG:Ce films by improving crystallinity and increasing Ce3+ content

Journal of Advanced Ceramics
High operating temperatures generally degrade the luminous performance of color converters used in high-power, laser-driven white lighting systems. This study demonstrated that the operating temperature of LuAG:Ce films can be significantly reduced ...
Huiying Hu, Bingguo Xue, Shaohong Liu, Limin Zhou, Hao Cui, Manmen Liu, Haigang Dong, Li Chen, Ming Wen, Feng Liu, Song Li, Liang Zuo   +11 more
doaj   +1 more source

Numerical Simulation of a Hollow-Core Woodpile-Based Mode Launcher for Dielectric Laser Accelerators

Applied Sciences, 2022
Hollow core microstructures powered by infrared lasers represent a new and promising area of accelerator research, where advanced concepts of electromagnetism must be used to satisfy multiple requirements.
Giorgio Sebastiano Mauro, Giuseppe Torrisi, Andrea Locatelli, Alberto Bacci, Costantino De Angelis, David Mascali, Gino Sorbello   +6 more
doaj   +1 more source

Tuning of laser power converters efficiency by means of temperature

Journal of Physics: Conference Series, 2020
Abstract The results of studying the InxGa1−xAs laser power converters with the indium percentage of 18% and of 23% are presented. In the mode of 1064 nm laser radiation conversion the photovoltaic parameters dynamics with raising temperature is discussed.
M Z Shvarts, V M Emelyanov, D A Malevskiy, M A Mintairov, S A Mintairov, M V Nakhimovich, P V Pokrovskiy, R A Salii, N A Kalyuzhnyy   +8 more
openaire   +1 more source

Compact, low power and low threshold electrically pumped micro disc lasers for 20Gb/s non return to zero all optical wavelength conversion [PDF]

, 2010
\u3cp\u3eUsing a 7.5μm wide InP Micro-Disc-Laser, with a very low ∼100μA threshold current, heterogeneously integrated on top of Silicon on Insulator substrate, all optical NRZ wavelength conversion at speeds up to 20Gb/s is demonstrated.\u3c/p ...
de Vries, T, Dorren, HJS, Kumar, Rajesh, Liu, L, Morthier, Geert, Raz, O, Regreny, P, Rojo-Romeo, P, Van Thourhout, Dries   +8 more
core   +1 more source

High-performance laser power converts for wireless information transmission applications

Optics Express, 2023
Laser Power Converters (LPCs) are components of the laser wireless power transmission (LWPT) system receiving laser power. This paper proposes a comprehensive test method that employs continuous, pulse-pause, and short-time techniques to evaluate the performance of six-junction GaAs LPCs operating with an optical input at 808 nm.
Yudan Gou, Hao Wang, Jun Wang, Yongji Chen, Zhiqiang Mou, Yuchao Chen, Huomu Yang, Guoliang Deng   +7 more
openaire   +2 more sources