Sensitive femtosecond wave-packet spectrometer
Sensitive femtosecond wave-packet spectrometer
复制标题
灵敏的飞秒波包光谱仪
DOI：
10.1016/j.optcom.2005.09.054
复制
发表时间：
2006
影响因子：
2.4
通讯作者：
K. Ishida
中科院分区：
文献类型：
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作者：
K. Horikoshi;K. Misawa;R. Lang;K. Ishida
我们研制了一台高灵敏度的飞秒泵浦探测光谱仪，适用于观测波包动力学和位相弛豫等超快现象。与传统的泵浦-探测光谱学不同，我们的方法不需要锁定放大器。通过快速扫描延迟级和多通道直流截止放大器的组合，可以实现对非线性信号的选择性检测，这是我们新方法的核心。还实现了光谱的同时测量，短采集时间小于50min。检测下限可达1×10−5。这种新方法使我们能够跟踪凝聚态物质中振动波包的详细动力学，并提供势能面和退相过程的信息。
We developed a highly sensitive femtosecond pump–probe spectrometer suitable for observation of ultrafast phenomena such as wave-packet dynamics and phase relaxation. Unlike the conventional pump–probe spectroscopy, our method does not require lock-in amplifiers. Selective detection of nonlinear signal is possible by combination of a rapid-scanning delay stage and multichannel DC-cut amplifiers, which is the core of our new method. Simultaneous measurement of spectra is also realized with short acquisition time less than 50min. The detection limit is up to 1×10−5. This new method enables us to trace detailed dynamics of vibrational wave packet in condensed matters, and provides information of the potential energy surface and dephasing process.
假异花青 J-聚集体的亚 5-fs 二维光谱
DOI：
--
发表时间：
2004
期刊：
Chem.Phys.Lett. 395
影响因子：
--
作者：
K.Nishimura;E.Tokunaga;T.Kobayashi
通讯作者：
T.Kobayashi