期刊
ELECTRONICS LETTERS
卷 42, 期 21, 页码 1224-1226出版社
INSTITUTION ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/el:20062031
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It is shown by numerical simulations that cascaded silicon Raman lasers, in which the pump light undergoes multiple Stokes shifts in a silicon waveguide, can efficiently convert near-IR to mid-IR radiation. For pump wavelengths significantly below 2 pro, two-photon-absorption-induced free-carrier absorption degrades conversion efficiency, and the effective carrier lifetime determines the shortest possible pump wavelength.
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