SLD seeded all fiber cascaded nanosecond pulsed amplifier |
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Authors: | H. T. Zhang M. Liu P. Yan M. L. Gong C. Zheng K. Meng W. Y. Cheng |
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Affiliation: | 1. State Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments, Tsinghua University, Beijing, 100084, China
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Abstract: | A Super-luminescent Diode (SLD) seeded all fiber cascaded pulsed laser system is reported. The signal line width is 8 nm confined by spectrum filers between stages, much wider than Laser Diode (LD) seeded laser. The wide spectrum of the seed source gives a good opportunity to get higher stimulated brillouin scattering threshold than LD seeded laser. The system emits up to 50 W pulses at a wavelength of 1064 nm and a repetition rate of 20 kHz with peak power 250 kW and beam quality M2 < 1.8. No SBS or SRS are observed and its output power is limited only by available pump power. |
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