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  • 2017 Conference on Lasers and Electro-Optics Pacific Rim
  • (Optica Publishing Group, 2017),
  • paper s2020

Second harmonic generation based on a 1 μm femtosecond fiber CPA system

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We demonstrated a femtosecond green laser operating at 532 nm by frequency doubling of a 1 μm linearly-polarized all-fiber-integrated femtosecond chirped pulse amplification system. The 1-μm broad-spectrum seed with a 3 dB spectral bandwidth of 11.3 nm was founded by dispersive wave technology. The average power was scaled up to 6.5 W by two stage ytterbium-doped fiber amplifier and the pulse duration was compressed to 371 fs through grating pair compressor. Finally, a maximum green laser power of 1.25 W was achieved with an input power of 4.7 W by a 5×5×2 mm BBO crystal, corresponding to a conversion efficiency of 26.6 %.

© 2017 Optical Society of America

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