Grating-tuned external-cavity quantum-cascade semiconductor lasers

Authors
Luo, GP Peng, C Le, HQ Pei, SS Hwang, WY Ishaug, B Um, J Baillargeon, JN Lin, CH
Citation
Gp. Luo et al., Grating-tuned external-cavity quantum-cascade semiconductor lasers, APPL PHYS L, 78(19), 2001, pp. 2834-2836
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
19
Year of publication
2001
Pages
2834 - 2836
Database
ISI
SICI code
0003-6951(20010507)78:19<2834:GEQSL>2.0.ZU;2-I
Abstract
Grating-coupled external-cavity quantum-cascade lasers were studied for tem peratures from 80 to 230 K. At 80 K, a tuning range of similar to 65-88 nm are obtained for 4.5 and 5.1 mum laser amplifiers, respectively. The tuning ranges for both narrowed substantially with increasing temperature, to sim ilar to 23 nm at 203 K. The threshold varied slowly versus wavelength, whil e the efficiency appeared to be close to optimum toward wavelengths shorter than the free running wavelength. (C) 2001 American Institute of Physics.