Results 31 to 40 of about 263,472 (374)

A theory of longitudinal modes in semiconductor lasers [PDF]

Applied Physics Letters, 1982
A theory of longitudinal mode lasing spectrum of semiconductor lasers is developed which takes into account the nonuniform carrier and photon distributions and local gain spectrum shifts inside lasers with low end mirror reflectivities. The theory gives results consistent with observed longitudinal mode behavior in lasers with reduced facet ...
Lau, Kam Y., Yariv, Amnon
openaire   +4 more sources

Quantum modeling of semiconductor gain materials and vertical-external-cavity surface-emitting laser systems [PDF]

, 2010
This article gives an,overview of the microscopic theory,theory used to quantitatively model a wide range of semiconductor laser gain materials. As a snapshot of the current state of research, applications to a variety of actual quantum-well systems are ...
Bank, Baranovskii, Blume, Brum, Buyanova, Bückers, Bückers, Bückers, Calvez, Candey, Chow, Chow, Christen, Clark, Davey, Dowd, Faist, Fehse, Gehrsitz, Girndt, Grenouillet, Grüning, Hader, Hader, Hader, Hader, Hader, Hader, Hader, Hader, Hantke, Hastie, Haug, Hierro, Jaschke, Johnson, Keller, Kemp, Kim, Kira, Kuznetsov, Kuznetsov, Kühn, Lindsay, Massies, McGinily, Meyer, Miller, Misiewicz, Moloney, Nahory, O'Reilly, Pease, Pinault, Prins, Rattunde, Rattunde, Rubel, Satzke, Schafer, Schlichenmaier, Schlichenmaier, Schmid, Schulz, Schulz, Schulz, Shimizu, Skolnick, Thränhardt, Thränhardt, Thränhardt, Tournié, Tropper, Tropper, Vurgaftman, Wang, Weyers, Yang, Zakharian, Zhang   +79 more
core   +1 more source

Optimal laser-control of double quantum dots [PDF]

, 2007
Coherent single-electron control in a realistic semiconductor double quantum dot is studied theoretically. Using optimal-control theory we show that the energy spectrum of a two-dimensional double quantum dot has a fully controllable transition line.
A. Castro, A. G. Butkovskiy, A. Rubio, E. K. U. Gross, E. Räsänen, J. Werschnik, J. Werschnik   +6 more
core   +2 more sources

Optimal Control of Quantum Rings by Terahertz Laser Pulses [PDF]

, 2007
Complete control of single-electron states in a two-dimensional semiconductor quantum-ring model is established, opening a path into coherent laser-driven single-gate qubits.
A. Castro, A. Rubio, E. K. U. Gross, E. Räsänen, J. Werschnik, J. Werschnik, T. Ihn   +6 more
core   +2 more sources

Au Nanoparticles (NPs) Decorated Co Doped ZnO Semiconductor (Co₄₀₀-ZnO/Au) Nanocomposites for Novel SERS Substrates

Biosensors, 2022
Au nanoparticles were decorated on the surface of Co-doped ZnO with a certain ratio of Co2+/Co3+ to obtain a novel semiconductor-metal composite. The optimal substrate, designated as Co400-ZnO/Au, is beneficial to the promotion of separation efficiency ...
Yan Zhai, Xiaoyu Zhao, Zhiyuan Ma, Xiaoyu Guo, Ying Wen, Haifeng Yang   +5 more
doaj   +1 more source

Exceeding the Manley-Rowe quantum efficiency limit in an optically pumped THz amplifier [PDF]

, 2006
Using a microscopic theory based on the Maxwell-semiconductor Bloch equations, we investigate the possibility of an optically-assisted electrically-driven THz quantum cascade laser. Whereas in optical conversion schemes the power conversion efficiency is
Chow, Weng W., Waldmueller, Ines, Wanke, Michael C.   +2 more
core   +2 more sources

Small-Signal Theory and Design of Traveling-Wave Semiconductor Cascade Lasers

IEEE Photonics Journal, 2010
Traveling-wave semiconductor cascade lasers (TWSCLs) are a form of series cascade laser (SCL) in which series-connected laser diodes are interconnected with commensurate transmission lines to create a periodically loaded structure.
H. Hashim, S. Iezekiel
doaj   +1 more source

The two-temperature effect on a semiconducting thermoelastic solid cylinder based on the modified Moore – Gibson – Thompson heat transfer

St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2023
This study introduces a new modified Moore – Gibson – Thompson Photo-Thermal (MGTPT) theory with two temperatures for semiconductor material. The photo-thermoelastic effects has been investigated in an infinitely constrained semiconducting solid cylinder
Kaur Iqbal, Singh Kulvinder
doaj   +1 more source

Intermodulation distortion in a directly modulated semiconductor injection laser [PDF]

, 1984
A most important quantity in high-frequency analog transmission is the intermodulation distortion product. Experimental studies of the third order intermodulation distortion products in the modulation response of high-speed semiconductor lasers give very
Lau, K. Y., Yariv, A.
core   +1 more source

Steady-state ab initio laser theory for complex gain media. [PDF]

Optics Express, 2014
We derive and test a generalization of the steady-state ab initio laser theory (SALT) to treat complex gain media. The generalized theory (C-SALT) is able to treat atomic and molecular gain media with diffusion and multiple lasing transitions, and ...
A. Cerjan, Y. Chong, A. Stone
semanticscholar   +1 more source