Title :
Cascaded silicon Raman lasers as mid-infrared sources
Author :
Krause, Markus ; Draheim, R. ; Renner, Herwig ; Brinkmeyer, Ernst
Author_Institution :
Tech. Univ. Hamburg-Harburg, Hamburg
Abstract :
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 mum, two-photon-absorption-induced free-carrier absorption degrades conversion efficiency, and the effective carrier lifetime determines the shortest possible pump wavelength
Keywords :
Raman lasers; infrared sources; numerical analysis; optical pumping; silicon; solid lasers; spectroscopic light sources; waveguide lasers; Si; Stokes shifts; carrier lifetime; cascaded silicon Raman lasers; conversion efficiency; infrared radiation; numerical simulations; photon-absorption-induced free-carrier absorption; pump light; pump wavelengths; silicon waveguide;
Journal_Title :
Electronics Letters
