Low-threshold optically pumped lÄ4.4mm vertical-cavity surface-emitting laser with a PbSe quantum-well active region
نویسندگان
چکیده
We report pulsed emission from an optically pumped lead-salt vertical-cavity surface-emitting laser with a PbSe/PbSrSe quantum-well active region. The lasing wavelength of l54.44 mm is nearly constant over the temperature range 200–280 K, and the threshold is only 10.5 kW/cm at 260 K, where the gain peak and cavity mode are in resonance. Over 330 mW of peak power is emitted at 260 K, into a circular beam whose divergence angle increases with pump intensity. © 2001 American Institute of Physics. @DOI: 10.1063/1.1378808#
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