Abstract
Chirped-superlattice quantum-cascade lasers are reported that emit at (3.5 THz), which is to the authors’ knowledge the longest wavelength demonstrated so far with this technology. Collected peak output powers of 1.5 mW per facet were measured at liquid-helium temperature, and a maximum operating temperature of 45 K was reached. Record low-threshold-current densities of 95 and were observed in pulsed and continuous-wave operation, respectively. For the latter, output powers of a few hundred microwatts are estimated at low temperatures.
© 2003 Optical Society of America
Full Article | PDF ArticleMore Like This
Xue Huang, William O. Charles, and Claire Gmachl
Opt. Express 19(9) 8297-8302 (2011)
Carlo Sirtori, Claire Gmachl, Federico Capasso, Jérôme Faist, Deborah L. Sivco, Albert L. Hutchinson, and Alfred Y. Cho
Opt. Lett. 23(17) 1366-1368 (1998)
Claire Gmachl, Federico Capasso, Alessandro Tredicucci, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, and Alfred Y. Cho
Opt. Lett. 25(4) 230-232 (2000)