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56-W Frequency-Doubled Source at 530 nm Pumped by a Single-Mode, Single-Polarization, Picosecond, Yb ^{3+} -Doped Fiber MOPA

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10 Author(s)
Kang Kang Chen ; Optoelectronic Research Centre, University of Southampton, Southampton, U.K. ; Shaif-ul Alam ; John R. Hayes ; Howard J. Baker
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We report a frequency-doubled green source at 530 nm pumped based on an all-fiber, picosecond, single-polarization Yb 3+-doped fiber master oscillator power amplifier (MOPA) delivering 20-ps pulses at user selectable repetition rates of up to 910 MHz and an average output power in excess of 100 W at 1.06 ??m. The output of the MOPA was frequency-doubled using a lithium triborate crystal. Up to 56 W of green light was generated at a corresponding repetition rate of 227 MHz at an overall conversion efficiency of 56%. The diode-to-green optical power conversion efficiency was 37%.

Published in:

IEEE Photonics Technology Letters  (Volume:22 ,  Issue: 12 )