Time-Domain Coherent Anti-Stokes Raman Scattering Signal Detection for Terahertz Vibrational Spectroscopy Using Chirped Femtosecond Pulses
Time-Domain Coherent Anti-Stokes Raman Scattering Signal Detection for Terahertz Vibrational Spectroscopy Using Chirped Femtosecond Pulses
复制标题
使用啁啾飞秒脉冲进行太赫兹振动光谱的时域相干反斯托克斯拉曼散射信号检测
DOI：
10.1143/apex.3.072401
复制
发表时间：
2010
影响因子：
2.3
通讯作者：
and Masanori Hangyo
中科院分区：
文献类型：
--
作者：
Masahiko Tani;Toshiyuki Koizumi;Hisashi Sumikura;Mariko Yamaguchi;Kohji Yamamoto;and Masanori Hangyo
提出并论证了一种使用啁啾飞秒脉冲的低频相干反斯托克斯拉曼散射光谱（CARS）的新方案。两个啁啾宽带光脉冲在样品中产生太赫兹 (THz) 偏振并生成 CARS 信号。然后，线性调频的 CARS 信号被脉冲压缩器压缩，并通过时间选通技术进行检测。利用时域 CARS 技术成功观测到了 0.6 THz 左右的 GaSe 共振拉曼带。利用本系统，可获得 0.2 至 5 THz 的 CARS 光谱。
A new scheme for low-frequency coherent anti-Stokes Raman scattering spectroscopy (CARS) using chirped femtosecond pulses is proposed and demonstrated. Two chirped broadband optical pulses created terahertz (THz) polarization in the sample and generated CARS signal. The chirped CARS signal was then compressed by a pulse compressor and detected by a time gating technique. A resonant Raman band of GaSe at around 0.6 THz was successfully observed with the time-domain CARS technique. With the present system, CARS spectra from 0.2 to 5 THz are obtainable.