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Narrowband optical parametric amplifier for efficient conversion of high-energy pulse with high beam quality

Narrowband optical parametric amplifier for efficient conversion of high-energy pulse with high beam quality
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摘要 In a two-stage optical parametric amplifier based on KTiOAO4 crystals, we apply beam-overlapping technique to nanosecond signal pulse amplification, which results in high conversion efficiency and good beam quality. A signal pulse energy of 66 mJ at 1.572 μm wavelength is generated with 220 mJ of pump pulse input. A maximum gain of 66 and a maximum pump depletion of as high as 44% are determined. The spectral linewidth of the amplified signal pulse is around 50 MHz, and the beam quality factor of M2 is less than 2.3. In a two-stage optical parametric amplifier based on KTiOAO4 crystals, we apply beam-overlapping technique to nanosecond signal pulse amplification, which results in high conversion efficiency and good beam quality. A signal pulse energy of 66 mJ at 1.572 μm wavelength is generated with 220 mJ of pump pulse input. A maximum gain of 66 and a maximum pump depletion of as high as 44% are determined. The spectral linewidth of the amplified signal pulse is around 50 MHz, and the beam quality factor of M2 is less than 2.3.
出处 《Chinese Optics Letters》 SCIE EI CAS CSCD 2014年第9期37-40,共4页 中国光学快报(英文版)
关键词 Conversion efficiency Light amplifiers Optical pumping Conversion efficiency Light amplifiers Optical pumping
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