26 February 2013 A high-peak power nanosecond all-fiber MOPA system at high-repetition rate
Author Affiliations +
By limiting the core diameter of 15 μm at maximum with NA=0.07±0.01 for the near-diffraction-limited output (V <3.6), we successfully generate the pulse with the peak power of 36 kW and the duration of 4.6 ns in FWHM at the repetition rate of 20 kHz. To the best of our knowledge, the signal pulse energy corresponding to 264 μJ is the highest to date in the diode-seeded 15-μm all-fiber MOPA system with the efficiency of 35%. The success in the energy/power scaling is attributed to the further raise of input energy for more extracted energy, the tradeoff between the Raman-limited signal energy and the amplifier slope efficiency for more signal energy ratio, and the proper adjustment of both pump wavelength and power for avoiding coat damage without forced cooling.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Chun-Lin Chang, Chun-Lin Chang, Po-Yen Lai, Po-Yen Lai, Yen-Yin Li, Yen-Yin Li, Shih-Hung Chen, Shih-Hung Chen, Sheng-Lung Huang, Sheng-Lung Huang, } "A high-peak power nanosecond all-fiber MOPA system at high-repetition rate", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86011X (26 February 2013); doi: 10.1117/12.2000617; https://doi.org/10.1117/12.2000617

Back to Top