Journal
OPTICS LETTERS
Volume 35, Issue 21, Pages 3574-3576Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.35.003574
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Funding
- National Natural Science Foundation of China (NSFC) [60978025]
- Chinese Academy of Sciences (CAS)
- Shanghai Pujiang Program [09PJ1410500]
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We report, for the first time to our knowledge, a radially polarized and passively Q-switched Yb-doped fiber laser. By using a Cr4+:YAG crystal as a saturable absorber and a photonic crystal grating as a polarization mirror, a radially polarized pulse is produced, which has 202 W of peak power, 75 ns duration, and similar to 92% polarization purity at a 56: 6 kHz repetition rate. The Q-switched pulse with radial polarization from the fiber laser would facilitate numerous applications. (C) 2010 Optical Society of America
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