%0 Journal Article
%T Low-Threshold High-Temperature Operation of ～7.4μm Quantum Cascade Lasers
%A 李路
%A 刘峰奇
%A 邵烨
%A 刘俊岐
%A 王占国
%J 中国物理快报
%D 2007
%I 
%X We report low-threshold high-temperature operation of 7.4#m strain-compensated InGaAs/lnAIAs quantum cascade lasers （QCLs）. For an uncoated 22-μm-wide and 2-mm-long laser, the low-threshold current densities, i.e. 0.33kA/cm^2 at 81 K in pulsed mode and 0.64kA/cm^2 at 84K in cw mode, are realized. High-temperature operation of uncoated devices, with a high value of 223K, is achieved in cw mode.
%K 量子
%K 高温
%K 散色
%K 叶栅
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=03664AC44D48081874D7C230D4652916&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=B31275AF3241DB2D&sid=209749DE0D716184&eid=14287D13823C7461&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0