Abstract
Recently, semiconductor lasers operating in the far-infrared region of the spectrum have attracted significant interest. Still, room-temperature operation of the intersubband laser yet has not been achieved primarily because of extremely short intersubband relaxation times. Various methods of lowering the room-temperature threshold have been proposed, including optical pumping of four-level intersubband lasers (OPILs),2 for which the relaxation times can be artificially engineered [Fig, 1(a)].
© 1995 Optical Society of America
PDF ArticleMore Like This
Jacob B. Khurgin and Emmanuel Rosencher
NME.32 Nonlinear Optics: Materials, Fundamentals and Applications (NLO) 1996
Greg Sun, Jacob B. Khurgin, and Richard A. Soref
CTuX7 Conference on Lasers and Electro-Optics (CLEO:S&I) 2006
F. Capasso, J. Faist, C. Sirtori, A. L. Hutchinson, D. L. Sivco, and A. Y. Cho
JWD1 Conference on Lasers and Electro-Optics (CLEO:S&I) 1995