Miniaturization of p  -Ge lasers: Progress toward continuous wave operation

We have observed intervalence band laser action in Al-doped germanium crystals with volumes as small as 0.03 cm3, one order of magnitude smaller than previously studied p-Ge laser crystals. A duty cycle of 1.5×10−4 was achieved. We show evidence that crystal heating plays a key role in the duration...

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Bibliographic Details
Published in:Applied physics letters 1996-03, Vol.68 (10), p.1359-1361
Main Authors: Bründermann, E., Linhart, A. M., Röser, H. P., Dubon, O. D., Hansen, W. L., Haller, E. E.
Format: Article
Language:English
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Summary:We have observed intervalence band laser action in Al-doped germanium crystals with volumes as small as 0.03 cm3, one order of magnitude smaller than previously studied p-Ge laser crystals. A duty cycle of 1.5×10−4 was achieved. We show evidence that crystal heating plays a key role in the duration of the emission pulse and have measured a maximum pulse length of 11 μs for a 0.43 cm3, Ga-doped germanium crystal. Such progress in the understanding and performance of p-Ge hot hole lasers marks a significant step toward continuous wave operation.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.116079