Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Clyde G. Bethea"'
Autor:
L.E. Adams, Clyde G. Bethea, P. Wisk, R. People, Arthur Mike Sergent, P.F. Sciortino, Tawee Tanbun-Ek, S.N.G. Chu, Gerald Nykolak, W.T. Tsang, R. Pawelek, T. Fullowan
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 3:960-967
Design and fabrication of the first 1.55-/spl mu/m wavelength tunable electroabsorption modulated laser integrated with a bent waveguide distributed-feedback (DFB) laser is reported. A low-threshold high-efficiency and stable single-longitudinal-mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::699842807331c60db603bf6c6b07e52b
https://doi.org/10.1109/2944.640650
https://doi.org/10.1109/2944.640650
Autor:
Clyde G. Bethea, C. Wang, I-Chun Anderson Chen, Rainer Martini, Dwight L. Woolard, Seong-Wook Park, Gang Chen
Publikováno v:
SPIE Proceedings.
Wavelength conversion (WC) imaging is a methodology that employs temperature sensitive detectors to convert photoinduced termperature into a detectable optical signal. One specific method is to use molecular detectors such as thermochromic liquid cry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d0abd555a1b7c074118c824369e1883
https://doi.org/10.1117/12.2012071
https://doi.org/10.1117/12.2012071
Publikováno v:
Optics express. 17(26)
Optical gain enhancement is demonstrated in a standard mid-infrared quantum cascade laser in pulse operation, using a near infrared illumination on the laser facet. An increase in the laser emission is observed, as well as greater dynamic range, thre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fd6e2110d71838dbb47c914415c3ee1
https://pubmed.ncbi.nlm.nih.gov/20052139
https://pubmed.ncbi.nlm.nih.gov/20052139
Publikováno v:
Thin Solid Films. 222:120-125
The physics underlying normal incidence hole intersubband absorption in p-type semiconductor quantum wells is briefly reviewed. The fabrication and performance characteristics of a pseudomorphic Ge0.25Si0.75/Si p-type quantum well infrared photodetec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::076ce80bd900ad93ee756dcaa8ac9734
https://doi.org/10.1016/0040-6090(92)90051-c
https://doi.org/10.1016/0040-6090(92)90051-c
Autor:
Albert L. Hutchinson, A.Y. Cho, C. Gmachl, James N. Baillargeon, Roberto Paiella, Deborah L. Sivco, Federico Capasso, Hang Liu, Clyde G. Bethea
Publikováno v:
IEEE Photonics Technology Letters. 12:780-782
Semiconductor lasers and detectors based on intersubband electron transitions are used to generate and measure high-speed pulses of mid-infrared radiation. In particular, we use a commercial comb generator to gain-switch a state-of-the-art 8-/spl mu/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e841b98f80939648cd9557990de21b1f
https://doi.org/10.1109/68.853498
https://doi.org/10.1109/68.853498
A simple experimental scheme to control intersubband lasing transition by optically induced nonresonant interband transition is presented, allowing for high-speed all-optical modulation of mid-infrared (MIR) quantum cascade laser (QCL). Illuminating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd9c25cd4912413cf2592985577249a7
https://doi.org/10.1063/1.3223597
https://doi.org/10.1063/1.3223597
Publikováno v:
IEEE Transactions on Electron Devices. 38:1118-1123
A long-wavelength infrared imaging camera that uses a GaAs/Al/sub x/Ga/sub 1-x/As quantum-well infrared photodetector (QWIP) array is demonstrated. Excellent noise equivalent temperature difference sensitivity (NE Delta T >
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff7fb175a3bd4dc9e080d66689669d0e
https://doi.org/10.1109/16.78387
https://doi.org/10.1109/16.78387
Autor:
Federico Capasso, Clyde G. Bethea, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, Roberto Paiella, Claire F. Gmachl, Alfred Y. Cho
Publikováno v:
Applied Physics Letters. 75:2536-2538
We report on a simple technique for the generation of short pulses of midinfrared (5 and 8 μm) radiation, based on gain-switched quantum cascade lasers. In particular, an integrated step-recovery diode source (comb generator) is used to drive the la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c572d41605050a0277780b81d2f217e
https://doi.org/10.1063/1.125069
https://doi.org/10.1063/1.125069
Publikováno v:
Scopus-Elsevier
Illuminating the quantum cascade laser front facet with femtosecond Ti:sapphire laser, fast modulations are observed in the laser current and optical emission at frequencies up to 2.87 GHz, limited by the testing equipment.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0e4c820657b54f10c4e9a44413c05b7
https://doi.org/10.1364/aoe.2008.sug6
https://doi.org/10.1364/aoe.2008.sug6
Autor:
R. People, P.F. Sciortino, S. N. G. Chu, Tawee Tanbun-Ek, Clyde G. Bethea, Won-Tien Tsang, P. Wisk, A.M. Sergent, Thomas R. Fullowan
Publikováno v:
IEEE Photonics Technology Letters. 9:563-565
The fabrication of the first 1.55-/spl mu/m wavelength tunable electroabsorption modulated laser integrated with a bent waveguide distributed-feedback laser is reported. A low-threshold and stable single-mode operation is obtained when the devices we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c2459119a226859c5b724792500207f
https://doi.org/10.1109/68.588097
https://doi.org/10.1109/68.588097