Zobrazeno 1 - 6
of 6
pro vyhledávání: '"77"'
Publikováno v:
Novel In-Plane Semiconductor Lasers XX.
Step-taper active-region (STA) quantum cascade lasers (QCLs) allow for both carrier-leakage suppression and fast, miniband-like lower-laser (ll) level depopulation. That has led to an internal-efficiency value of ~ 77 % for ~ 5 μmemitting devices, a
Autor:
Luke J. Mawst, K. Oresick, Yuri V. Flores, D. Lindberg, Thomas Earles, C. Boyle, Jeremy Kirch, Dan Botez
Publikováno v:
Novel In-Plane Semiconductor Lasers XVIII.
Step-taper active-region (STA) quantum cascade lasers (QCLs) allow for both carrier-leakage suppression and ultrafast, miniband-like carrier extraction. In turn, that has led to very high internal-efficiency ni values: ~ 77 % and 80-86 % from ~ 5.0
Autor:
Jae Cheol Shin, Luke J. Mawst, Dan Botez, Thomas Earles, Jeremy Kirch, Gun-Kim Doo, D. Lindberg, K. Oresick, C. Boyle, Chun Chieh Chang, Minhyeok Jo, Honghyuk Kim, C. Sigler
Publikováno v:
SPIE Proceedings.
Implementation of the step-taper active-region (STA) design to 8-9 μm-emitting quantum cascade lasers (QCLs) has resulted in both high T0 and T1 values: 220 K and 665 K, and short lower-level lifetimes: 0.12 ps. In turn, the internal differential ef
Autor:
Andrzej Kolek, Dorota Pierścińska, Maciej Bugajski, Anna Szerling, Kamil Kosiel, Kamil Pierściński, Piotr Karbownik, Grzegorz Hałdaś
Publikováno v:
SPIE Proceedings.
In this paper we present the development of mid-infrared GaAs/AlGaAs QCLs technology and discuss basic characteristics of lasers fabricated at the Institute of Electron Technology. We also show that reliable simulation methods which can deal with the
Autor:
Jérôme Faist, Carlo Sirtori, P. Kruck, Mattias Beck, Stefano Barbieri, Julien Nagle, Philippe Collot, Ursula Oesterle
Publikováno v:
Physics and Simulation of Optoelectronic Devices VII.
Operation of a unipolar injection quantum cascade laser grown in a GaAs/AlGaAs material is reported. In pulsed mode an optical peak power exceeding 100 mW at 77 K and at an emission wavelength of 9.3 μm is obtained. The optimum threshold current den
Autor:
Albert L. Hutchinson, Jérôme Faist, James N. Baillargeon, Steven W. Sharpe, John S. Hartman, James F. Kelly, Alfred Y. Cho, Edward A. Whittaker, Claire F. Gmachl, Federico Capasso, Khosrow Namjou, Simin Cai, Deborah L. Sivco
Publikováno v:
Fabrication, Testing, Reliability, and Applications of Semiconductor Lasers III.
Continuously tunable single-mode emission of high performance quantum cascade (QC) lasers is achieved by application of the distributed feedback (DFB) principle. The devices are fabricated either as loss-coupled or index-coupled DFB lasers. Single-mo