Frequency doubling of narrow-linewidth pulsed fiber laser |
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Authors: | Wendi Wu Tingqi Ren Jun Zhou Songtao Du and Xia Liu |
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Institution: | 1 College of Physics and Engineering,Qufu Normal University,Qufu 273156,China 2 Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China |
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Abstract: | A pulsed master oscillator power amplifier system is constructed using a double-cladding polarized Ybdoped fiber and an all-fiber Q-switched narrow-linewidth pulsed laser used as seed laser.This system has a high repetition rate and provides a nanosecond pulsed laser with a narrow linewidth and linear polarization.Moreover,it generates amplified radiation with up to 14 W of average power,narrow linewidth(full-width at half-maximum is smaller than 0.12 nm),linear polarization at 1 080-nm wavelength,repetition rate of 51 kHz,and pulse duration of approximately 50 ns.Based on this pulsed amplified radiation,3.5 W of green laser,with an optical-to-optical efficiency of 27.3%,is obtained via single-pass frequency doubling using a noncritical phase matching KTP crystal. |
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