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High-energy Q-switched operation of a fiber-laser-pumped Er:YAG laser

High-energy Q-switched operation of a fiber-laser-pumped Er:YAG laser
High-energy Q-switched operation of a fiber-laser-pumped Er:YAG laser
A high-energy Q-switched Er:YAG laser in-band pumped by an Er,Yb co-doped fiber laser is reported. A simple two-mirror multi-mode resonator incorporating an electro-optic Q-switch and a multi-Brewster-plate polarizer was employed, together with a simple compensation scheme to reduce the depolarization loss due to thermally induced stress birefringence in the Er:YAG crystal at high pump powers. The laser yielded Q-switched pulses at 1617 nm with 30.5-mJ pulse energy and <20-ns pulse duration (FWHM) at 20-Hz repetition rate, corresponding to a peak power of >1.5 MW for 55 W of pump power at 1532 nm. The prospects for further improvement in Q-switched performance are discussed.
0946-2171
263-267
Kim, J.W.
3d0ba669-a721-4922-ab5b-a73e2f81816a
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2
Kim, J.W.
3d0ba669-a721-4922-ab5b-a73e2f81816a
Sahu, J.K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Clarkson, W.A.
3b060f63-a303-4fa5-ad50-95f166df1ba2

Kim, J.W., Sahu, J.K. and Clarkson, W.A. (2011) High-energy Q-switched operation of a fiber-laser-pumped Er:YAG laser. Applied Physics B, 105 (2), 263-267. (doi:10.1007/s00340-011-4542-z).

Record type: Article

Abstract

A high-energy Q-switched Er:YAG laser in-band pumped by an Er,Yb co-doped fiber laser is reported. A simple two-mirror multi-mode resonator incorporating an electro-optic Q-switch and a multi-Brewster-plate polarizer was employed, together with a simple compensation scheme to reduce the depolarization loss due to thermally induced stress birefringence in the Er:YAG crystal at high pump powers. The laser yielded Q-switched pulses at 1617 nm with 30.5-mJ pulse energy and <20-ns pulse duration (FWHM) at 20-Hz repetition rate, corresponding to a peak power of >1.5 MW for 55 W of pump power at 1532 nm. The prospects for further improvement in Q-switched performance are discussed.

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Published date: November 2011
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 355950
URI: https://eprints.soton.ac.uk/id/eprint/355950
ISSN: 0946-2171
PURE UUID: f184c435-67fb-4f63-b640-999ec19e0b67

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Date deposited: 09 Sep 2013 13:39
Last modified: 23 Aug 2019 16:30

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Contributors

Author: J.W. Kim
Author: J.K. Sahu
Author: W.A. Clarkson

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