Title

Submillimeter P-Ge Laser Using A Permanent Magnet In Voigt Configuration

Abstract

Laser emission near 100 μm from intervalence band transitions of p-type Ge in E ⊥ 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.

Publication Date

12-1-1995

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

2558

Number of Pages

312-318

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

0029532315 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0029532315

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