High SBS-threshold single-mode single-frequency monolithic pulsed fiber laser in the C-band.
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 micros. 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 microJ and peak power of 332 W for 153-ns pulses at 1538 nm.
Shi
Wei
W
NP Photonics Inc., Tucson, AZ 85747, USA. wshi@npphotonics.com
Petersen
Eliot B
EB
Leigh
Matthew
M
Zong
Jie
J
Yao
Zhidong
Z
Chavez-Pirson
Arturo
A
Peyghambarian
Nasser
N