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Optical Engineering

Diode-pumped Q-switched fiber laser
Author(s): Francois Seguin; Tanya K. Oleskevich
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Paper Abstract

A Q-switched fiber laser is developed for eyesafe ranging applications. Using a highly doped erbium fiber pumped with a 30-mW laser diode at 980 nm, pulses of 290-W peak power and 20-ns duration are obtained. The laser consists of all-fiber elements, with the exception of a high-efficiency bulk acousto-optic Bragg cell aligned to the laser on the diffracted beam to provide Q-switching with high hold-off. Three emission bands of erbium are made to lase in continuous wave (cw) and Q-switched operation. It is established that optimal cw lasing is achieved at 1560 nm, and maximum intensity Q-switch pulses are produced at 1530 nm. The laser was packaged and tested in the field, demonstrating the readiness of this technology for ranging applications.

Paper Details

Date Published: 1 September 1993
PDF: 6 pages
Opt. Eng. 32(9) doi: 10.1117/12.143955
Published in: Optical Engineering Volume 32, Issue 9
Show Author Affiliations
Francois Seguin, Canadian Marconi Co. (Canada)
Tanya K. Oleskevich, Canadian Marconi Co. (Canada)

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