Journal
OPTICS EXPRESS
Volume 17, Issue 10, Pages 8237-8245Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.008237
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Funding
- NASA
- AFOSR [FA9550-09-C-0060, FA8650-09-M-5424]
- University of Arizona
- NSF ERC [EEC-0812072]
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We report a high SBS-threshold, single-frequency, single-mode, polarization maintaining (PM) monolithic pulsed fiber laser source in master oscillator and power amplifier (MOPA) configuration that can operate over the C-band. In order to achieve a narrow transform-limited linewidth for pulses longer than 100 ns, we use a single-frequency Q-switched fiber laser seed, which itself can be seamlessly tuned up to 1.24 mu s. The Q-switched pulses are amplified in the power amplifier stage of MOPA using a high SBS threshold single-mode PM large core highly Er/Yb co-doped phosphate glass fiber (LC-EYPhF). This seed and amplifier combination represents the first monolithic, all-fiber implementation of a single-frequency pulsed laser with the highest pulse energy of 54 mu J and peak power of 332 W for 153-ns pulses at 1538 nm. (C) 2009 Optical Society of America
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