Optical Parametric Amplifier Pumped at 266 nm toward Ultrashort Near-Ultraviolet Gigawatt Pulses
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概要
- 論文の詳細を見る
Near-ultraviolet (UV) broadband (370--470 nm) amplification up to 2.4 μJ energy from a single-pass $\beta$-barium borate (BBO) crystal is demonstrated by noncollinear optical parametric amplification (NOPA) pumped by the third harmonic (TH, 40 μJ pump energy) of Ti:sapphire laser pulses at 1 kHz repetition rate. The result of simulation with the pump depletion effect due to two-photon absorption (TPA) shows an excellent agreement with the experimental demonstration. Further simulation suggests that the intense pump (energy of 1 mJ) is useful, in spite of the increase in TPA, for obtaining high-energy amplification of 47 μJ for several femtosecond near-UV pulses with 4.7% efficiency using a commercially available high-power femtosecond laser system.
- 2011-07-25
著者
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Yamashita Mikio
Department Of Applied Physics Hokkaido University
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YAMANE Keisaku
Department of Applied Physics, Faculty of Engineering, Hokkaido University
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Karasawa Naoki
Department Of Applied Photonics System Technology Chitose Institute Of Science And Technology
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Tanigawa Takashi
Department Of Applied Physics Hokkaido University
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Yamashita Mikio
Department of Applied Physics, Hokkaido University, and Core Research Evolutional Science and Technology, Japan Science and Technology Agency, Sapporo 060-8628, Japan
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Tanigawa Takashi
Department of Applied Physics, Hokkaido University, and Core Research Evolutional Science and Technology, Japan Science and Technology Agency, Sapporo 060-8628, Japan
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Karasawa Naoki
Department of Applied Photonics System Technology, Chitose Institute of Science and Technology, Chitose, Hokkaido 066-8655, Japan
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Yamane Keisaku
Department of Applied Physics, Hokkaido University, and Core Research Evolutional Science and Technology, Japan Science and Technology Agency, Sapporo 060-8628, Japan
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