Low-threshold optically pumped λ=4.4 μm vertical-cavity surface-emitting laser with a PbSe quantum-well active region

Low-threshold optically pumped λ=4.4 μm vertical-cavity surface-emitting laser with a PbSe quantum-well active region

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 λ=4.44 μm is nearly constant over the temperature range 200–280 K, and the threshold is only 10.5 kW/cm2 at 260 K, where the gai...

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Veröffentlicht in:Applied physics letters 2001-06, Vol.78 (24), p.3770-3772
Hauptverfasser: Felix, C. L., Bewley, W. W., Vurgaftman, I., Lindle, J. R., Meyer, J. R., Wu, H. Z., Xu, G., Khosravani, S., Shi, Z.
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Sprache:eng
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Zusammenfassung: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 λ=4.44 μm is nearly constant over the temperature range 200–280 K, and the threshold is only 10.5 kW/cm2 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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1378808