A high power, mid-infrared (λ=3.8 µm) lead-salt vertical-cavity surface-emitting laser (VCSEL) operating at 325K is demonstrated. The laser emission is generated in a half-wavelength microcavity consisting of seven pairs of PbSe/PbSrSe multiple-quantum-wells embedded in two mirrors and optically pumped with 5 ns laser pulses.
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Xu et al. (2003) studied this question.
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