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17 April 2020 High peak power narrow-linewidth linearly polarized all-fiber nanosecond laser
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Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 114558J (2020) https://doi.org/10.1117/12.2565790
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China
Abstract
An all-fiber laser is developed with high peak power, narrow linewidth,linearly polarization, and nanosecond pulse. The single-frequency continuous fiber laser is externally modulated by an electro-optical intensity modulator(EOIM) and a stable pulsed seed laser is obtained with the pulse width of 10 ns and the repetitions rate of 10 kHz. Multistage MOPA structure scheme is adopted.After two stages core-pumped preamplifiers and three stages cladding-pumped amplifiers, the average output power of the laser reach to 21.3W with the peak power of 267 kW. At the highest output power, the signalto-noise ratio of the spectral is greater than 30dB, the polarization extinction ratio is superior 15dB and the Mx2 and My2 factors are 1.28, 1.23, respectively. Stimulated Brillouin scattering (SBS) was not found in the experiment. By increasing the pump power, the average power and peak power can be further improved.
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Zhi-yong Wang, Song Yang, Xue-sheng Liu, Han-yin Si, and Wen-zeng Jia "High peak power narrow-linewidth linearly polarized all-fiber nanosecond laser", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114558J (17 April 2020); https://doi.org/10.1117/12.2565790
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