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Kilohertz femtosecond UV-pumped visible beta-barium borate and lithium triborate optical parametric generator and amplifier

机译:千赫飞秒紫外线泵浦可见的β-硼酸钡和三硼酸锂光学参数发生器和放大器

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We demonstrate optical parametric generation and amplification of femtosecond pulses in the entire visible range using type-I phase-matched beta-barium borate and lithium triborate crystals pumped by the frequency-doubled output of a Ti:sapphire regenerative amplifier at 395 nm. The output is tunable from 470 to 770 nm with a pulse width of similar to 170 fs at a repetition rate of 1 kHz and a a maximum output energy of similar to 1.1 mu J/pulse. The visible optical parametric amplifier output was then frequency doubled and sum frequency mixed with the fundamental output of Ti:sapphire at 790 nm to produce UV pulses with a conversion efficiency of greater than 25%. The second harmonic generated UV pulses are tunable from 240 to 380 nm with a maximum pulse energy of similar to 260 nJ/pulse. (C) 1997 Optical Society of America.
机译:我们演示了通过在395 nm处通过Ti:蓝宝石再生放大器的倍频输出泵浦的I型相位匹配的β-钡硼酸盐和三硼酸锂晶体在整个可见光范围内产生的飞秒脉冲光学参数生成和放大。输出在470至770 nm范围内可调,脉冲宽度类似于170 fs,重复频率为1 kHz,最大输出能量类似于1.1μJ /脉冲。然后将可见光参量放大器的输出频率加倍,并将总频率与790 nm的Ti:蓝宝石的基本输出频率混合,以产生转换效率大于25%的UV脉冲。二次谐波产生的UV脉冲可在240至380 nm范围内可调,最大脉冲能量类似于260 nJ /脉冲。 (C)1997年美国眼镜学会。

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