Pb1−xSrxS/PbS double-heterostructure stripe contact lasers were prepared for the first time using a hot-wall expitaxy technique. The laser operated up to 245 K pulsed (2.97 μm) and 174 K cw, which are the highest operating temperatures ever reported for any semiconductor diode lasers operating around 3 μm. In this letter preparation and properties of the Pb1−xSrxS lasers are presented.
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Ishida et al. (1989) studied this question.
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