Abstract
Coherent emitters for the mid infrared (MIR) range are of high interest due to various gas absorption lines in this region permitting sensitive gas spectroscopy. For these applications usually semiconductor lasers made from lead salts (IV-VI) compounds are used. Although in recent years much progress has been achieved with MIR III-V quantum cascade lasers and with type II antimony based lasers, the lead salt lasers still represent the highest cw operation temperature for electrically pumped MIR diode lasers.
© 2000 IEEE
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