High-repetition-rate and high-conversion-efficiency in optical parametric chirped-pulse amplification system
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zeng xiao-ming,
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wei xiao-feng,
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zhu qi-hua,
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huang xiao-jun,
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wang xiao-dong,
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liu lan-qin,
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zhou kai-nan,
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wang xiao,
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chu xiao-liang,
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gou yi,
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tang xiao-dong
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Abstract
Great nonlinear coefficients of quasi-phase-matching crystals may be used in optical parametric chirped-pulse amplification (OPCPA) system. This is particularly true for the applications that require high repetition rates and small pump energies. The numerical simulations show that a saturatiom amplificatiom gain of above 6.2×106 and over 25% pump-to-signal conversion efficiency can be obtained with a periodically poled crystal in the first stage of the optical parametric amplification. A high repetition rate and sub-terawatt OPCPA laser system with diode-laser pumping was discussed．
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