Femtosecond time-resolved impulsive stimulated Raman spectroscopy using sub-7-fs pulses: Apparatus and applications
Femtosecond time-resolved impulsive stimulated Raman spectroscopy using sub-7-fs pulses: Apparatus and applications
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DOI：
10.1063/1.4945259
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发表时间：
2016-04-01
影响因子：
1.6
通讯作者：
Tahara, Tahei
中科院分区：
文献类型：
--
作者：
Kuramochi, Hikaru;Takeuchi, Satoshi;Tahara, Tahei
我们描述的时间分辨脉冲受激拉曼光谱（TR-ISRS）的设置的细节。在这种方法中，通过使用超短脉冲的时域拉曼探测捕获光反应瞬态的快照分子振动光谱。我们的仪器具有transform-limited sub-7-fs脉冲，以脉冲方式激发和探测相干核波包运动，使我们能够以高灵敏度观察从太赫兹到3000-cm（-1）区域的瞬态物质的振动指纹。最佳的光谱性能的关键光学元件进行了讨论。的TR-ISRS测量的二苯基乙炔在环己烷中的激发态的演示，突出了我们的设置跟踪所有的拉曼活性的基本分子振动的飞秒动力学的能力。(C)2016 AIP Publishing LLC.
We describe details of the setup for time-resolved impulsive stimulated Raman spectroscopy (TR-ISRS). In this method, snapshot molecular vibrational spectra of the photoreaction transients are captured via time-domain Raman probing using ultrashort pulses. Our instrument features transform-limited sub-7-fs pulses to impulsively excite and probe coherent nuclear wavepacket motions, allowing us to observe vibrational fingerprints of transient species from the terahertz to 3000-cm(-1) region with high sensitivity. Key optical components for the best spectroscopic performance are discussed. The TR-ISRS measurements for the excited states of diphenylacetylene in cyclohexane are demonstrated, highlighting the capability of our setup to track femto-second dynamics of all the Raman-active fundamental molecular vibrations. (C) 2016 AIP Publishing LLC.