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

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.116079· OSTI ID:278896

Bruendermann, E; Linhart, A M; Roeser, H P ^[1]; Dubon, O D; Hansen, W L; Haller, E E ^[2]

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1. DLR, Institute for Space Sensor Technology, D-12489 Berlin (Germany)
2. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

We have observed intervalence band laser action in Al-doped germanium crystals with volumes as small as 0.03 cm{sup 3}, one order of magnitude smaller than previously studied {ital p}-Ge laser crystals. A duty cycle of 1.5{times}10{sup {minus}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 {mu}s for a 0.43 cm{sup 3}, Ga-doped germanium crystal. Such progress in the understanding and performance of {ital p}-Ge hot hole lasers marks a significant step toward continuous wave operation.

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 278896
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 10 Vol. 68; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ALUMINIUM ADDITIONS
DESIGN
DOPED MATERIALS
EMISSION SPECTRA
FAR INFRARED RADIATION
GERMANIUM
HEATING
MINIATURIZATION
PERFORMANCE
SEMICONDUCTOR LASERS