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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
Autor:
Mohammed N. Afsar, Hua Chi
Publikováno v:
SPIE Proceedings.
At higher frequencies it is not easy to find a suitable material for output window applications in a high power gyrotron. The room temperature application of sapphire as a window material at higher frequencies is not feasible since its absorption coe