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首页> 外文期刊>Optics Letters >High-power picosecond mid-infrared optical parametric amplifier for infrared Raman spectroscopy
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High-power picosecond mid-infrared optical parametric amplifier for infrared Raman spectroscopy

机译:用于红外拉曼光谱的大功率皮秒中红外光学参量放大器

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摘要

A high-power (50-MW), kilohertz, picosecond, mid-IR optical parametric amplifier that is pumped by an amplified Ti:sapphire laser and also produces a fixed-frequency visible pulse is described. Mid-IR pulse energies of 40-55 mu J with 0.6-0.8-ps durations and 35-cm(-1) bandwidths are reported in the 3650-2800-cm(-1) range. The combination of picosecond mid-IR and visible pulses is useful for two-color spectroscopies, which require simultaneous time and frequency resolution. To illustrate the above, we present vibrational relaxation data for the polyatomic molecule nitromethane, using time-resolved infrared Raman spectroscopy. (C) 1997 Optical Society of America.
机译:描述了一种高功率(50 MW),千赫兹,皮秒,中红外光学参量放大器,该放大器由放大的Ti:蓝宝石激光器泵浦并产生固定频率的可见脉冲。据报道,在3650-2800-cm(-1)范围内,具有0.6-0.8-ps持续时间和35-cm(-1)带宽的40-55μJ的中红外脉冲能量。皮秒中红外和可见脉冲的组合对于需要同时进行时间和频率分辨率的双色光谱学很有用。为了说明上述内容,我们使用时间分辨红外拉曼光谱技术给出了多原子分子硝基甲烷的振动弛豫数据。 (C)1997年美国眼镜学会。

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