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Proceedings Paper

High-power diode pumped Nd:YAG master oscillator power amplifier system
Author(s): Alexander Gaydardzhiev; Anton Trifonov; Torsten Fiebig; Ivan Buchvarov
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Paper Abstract

A nanosecond Nd:YAG based high-energy kilohertz Master Oscillator Power Amplifier (MOPA) system has been developed. The Q-switched master oscillator emits 6.5-ns, 1-kHz pulses with energy up to 1.6 mJ. The design of the oscillator ensures TEM00 operation with high stability and insensitivity to cavity misalignment. Two different amplification schemes - slab and rod geometry of the amplifiers have been studied. We have developed a compact, five-pass gain module with slab design, pumped by four 30-W collimated laser diode bars. The amplified output energy is 8 mJ at 1 kHz. The optical-to-optical conversion efficiency is 15 %. The second scheme is based on side-pumped rod preamplifier with consequent end amplifier with depolarization compensation. This system delivers up to 18 mJ linearly polarized TEM00 pulses - corresponding to 5 % optical-to-optical conversion efficiency.

Paper Details

Date Published: 11 November 2009
PDF: 8 pages
Proc. SPIE 7501, International Conference on Ultrafast and Nonlinear Optics 2009, 750105 (11 November 2009); doi: 10.1117/12.849859
Show Author Affiliations
Alexander Gaydardzhiev, Sofia Univ. (Bulgaria)
Anton Trifonov, Boston College (United States)
Torsten Fiebig, Boston College (United States)
Ivan Buchvarov, Sofia Univ. (Bulgaria)

Published in SPIE Proceedings Vol. 7501:
International Conference on Ultrafast and Nonlinear Optics 2009
Solomon M. Saltiel; Alexander A. Dreischuh; Ivan P. Christov, Editor(s)

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