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Proceedings Paper

Submillimeter p-Ge laser using a permanent magnet in Voigt configuration
Author(s): Kijun Park; Robert E. Peale; Henry Weidner; Jin J. Kim
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Paper Abstract

Laser emission near 100 micrometers from intervalence band transitions of p-type Ge in E (perpendicular) B fields is reported. Our idea is to substitute a Voigt configured permanent magnet for the traditional superconducting one. We compare the results using this new design with our results using a Faraday-configured superconducting magnet. Emission is observed at much lower electric-field pulse magnitude in Voigt configuration. The use of a variable temperature cryostat has allowed detailed temperature dependence of the emission to be studied down to 1.7 K. The emission-strength peaks around 2 K, and a rapid decrease below 2 K has been observed. Heating limits the rep rate, but we have observed emission up to 30 Hz with our permanent magnet. Observation of submm emission from a Voigt-configured p-Ge laser using a permanent magnet represents a breakthrough in practicality because it considerably simplifies the device and eliminates the necessity of liquid helium, in principle.

Paper Details

Date Published: 13 October 1995
PDF: 7 pages
Proc. SPIE 2558, Millimeter and Submillimeter Waves II, (13 October 1995); doi: 10.1117/12.224259
Show Author Affiliations
Kijun Park, CREOL/Univ. of Central Florida (United States)
Robert E. Peale, CREOL/Univ. of Central Florida (United States)
Henry Weidner, Univ. of Central Florida (United States)
Jin J. Kim, CREOL/Univ. of Central Florida (United States)

Published in SPIE Proceedings Vol. 2558:
Millimeter and Submillimeter Waves II
Mohammed N. Afsar, Editor(s)

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