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Proceedings Paper

Intense supercontinuum generation in a nanosecond nonlinear all-PM-fiber power amplifier
Author(s): Chun-Lin Chang; Yen-Yin Lin; Po-Yen Lai; Yen-Yin Li; Dong-Yo Jheng; Shih-Hung Chen; Sheng-Lung Huang
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Paper Abstract

Intense nanosecond emission with spectral broadening from 980 to 1600 nm was generated with peak power up to 117 kW, close to the damage threshold of fiber fuse. Both laser amplification and nonlinear conversion were simultaneously employed in a fiber power amplifier giving power scaling free from significant depletion. In a diode-seeded all-PM-fiber master oscillation power amplifier system under all normal dispersion, a core-pumped preamplifier using double-pass scheme can significantly improve the energy extraction. This produced the pulse energy of 1.2 mJ and duration of 6 ns with a conversion efficiency of 66% at the moderate repetition of 20 kHz, which is consistent with the coupled laser rate equations including the stimulated Raman scattering. For the comparable nonlinear strength in each stage from single to few modes, the onset and interplay of four kinds of fiber nonlinearities can be addressed.

Paper Details

Date Published: 12 March 2014
PDF: 10 pages
Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 89612S (12 March 2014); doi: 10.1117/12.2037622
Show Author Affiliations
Chun-Lin Chang, National Taiwan Univ. (Taiwan)
Yen-Yin Lin, National Tsing Hua Univ. (Taiwan)
Po-Yen Lai, National Central Univ. (Taiwan)
Yen-Yin Li, National Taiwan Univ. (Taiwan)
Dong-Yo Jheng, National Taiwan Univ. (Taiwan)
Shih-Hung Chen, National Central Univ. (Taiwan)
Sheng-Lung Huang, National Taiwan Univ. (Taiwan)

Published in SPIE Proceedings Vol. 8961:
Fiber Lasers XI: Technology, Systems, and Applications
Siddharth Ramachandran, Editor(s)

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