Abstract
We report lasing of exciton–polaritons in semiconductor microspheres with spherical cavity modes under subpicosecond ultraviolet laser excitation at low temperature. Small bulk crystals of CuCl are melted and formed into fused microspheres with diameters ranging from a few to several tens of micrometers. The threshold for lasing is 1 nJ/pulse, which corresponds to photons/pulse. We found that the biexciton-to-longitudinal-exciton transition is responsible for the lasing.
© 1997 Optical Society of America
Full Article | PDF ArticleMore Like This
Xudong Fan, Scott Lacey, and Hailin Wang
Opt. Lett. 24(11) 771-773 (1999)
Tomokatsu Hayakawa, Hiroyuki Ooishi, and Masayuki Nogami
Opt. Lett. 26(2) 84-86 (2001)
M. Cai, O. Painter, K. J. Vahala, and P. C. Sercel
Opt. Lett. 25(19) 1430-1432 (2000)