%0 Journal Article
%T High-Power Operation of Uncoated Strain-Compensated Quantum Cascade Lasers at 4.8μm
%A 李路
%A 邵烨
%A 刘俊岐
%A 刘峰奇
%A 王占国
%J 中国物理快报
%D 2007
%I 
%X High-power operation of uncoated 22μm-wide quantum cascade lasers （QCLs） emitting at λ～ 4.8μm is reported. The emitting region of the QCL structure consists of a 30-period strain-compensated Ino.68 Gao.32 As/In0.37 Alo.63 As superlattice. For a 4-mm-long laser in pulsed mode, a peak output power is achieved in excess of 2240mW per facet at 81K with a threshold current density of 0.64 kA/cm^2. The effects of varying the cavity lengths from 1 to 4 mm on the performances of the QCLs are analysed in detail and the low waveguide loss of only about 1.4 cm^-1 is extracted.
%K 激光
%K 量子论
%K 疲劳补偿
%K 超晶格
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=B97794EE70A252B8D4F926BA3EBA752D&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=59906B3B2830C2C5&sid=50AE5E78D40D7235&eid=D89988F9837CADA9&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=11