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20-50-fs pulses tunable across the near infrared from a blue-pumped noncollinear parametric amplifier

机译:可通过蓝泵浦非共线参数放大器在近红外范围内调节20-50fs脉冲

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摘要

A two-stage blue-pumped noncollinearly phase matched optical parametric amplifier was used to generate near-infrared pulses that were continuously tunable from 865 to 1600 nm. The pulse lengths scaled from 20 fs at the shorter wavelengths to below 50 fs at 1600 nm, with a nearly Fourier-transform-limited bandwidth. From 200 μJ of 775-nm pump light at a 1-kHz repetition rate and a 130-fs duration, 7-2.5-μJ pulse energies were generated, corresponding to a typical quantum efficiency of 25% from blue to near-infrared light.
机译:使用两级蓝泵浦非共线相位匹配光学参量放大器来生成可在865 nm至1600 nm连续可调的近红外脉冲。脉冲长度从较短波长的20 fs缩放到1600 nm处的50 fs以下,具有接近傅里叶变换的带宽。从200μJ的775 nm泵浦光以1 kHz的重复频率和130 fs的持续时间产生了7-2.5μJ的脉冲能量,相当于从蓝光到近红外光的典型量子效率为25%。

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