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Proceedings Paper

Pb1-xSnxTe Lasers With High Efficiencies
Author(s): Koji Shinohara; Yoshito Nishijima; Hirokazu Fukuda
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Paper Abstract

Internal quantum efficiencies of Pb Sn Te lasers with double-hetero geometries have been estimated. The efficiencies of conventional PbTe/PbSnTe/PbTe lasers are very low and far from the efficiencies which are limited by Auger-recombination mechanism. The main cause of low efficiency is thought to be due to the misfit dislocations at the PbTe-PbSnTe hetero-interface. To reduce the misfit dislocations, lattice-matched PbTeSe/PbSnTe/PbTeSe lasers are prepared and they show considerable improvements. However, due to the difficulty of cleaving of PbTeSe layers, the efficiencies are not sufficient. By designing a one-side-lattice-matched PbTeSe/PbSnTe/PbTe structure, the lasers whose efficiencies are very close to the theoretical limit can be prepared.

Paper Details

Date Published: 26 November 1983
PDF: 8 pages
Proc. SPIE 0438, Tunable Diode Laser Development and Spectroscopy Applications, (26 November 1983); doi: 10.1117/12.937422
Show Author Affiliations
Koji Shinohara, Fujitsu Laboratories LTD. (Japan)
Yoshito Nishijima, Fujitsu Laboratories LTD. (Japan)
Hirokazu Fukuda, Fujitsu Laboratories LTD. (Japan)

Published in SPIE Proceedings Vol. 0438:
Tunable Diode Laser Development and Spectroscopy Applications
Chiwoei Wayne Lo, Editor(s)

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