Elezzabi A Y, Maraghechi P
Ultrafast Optics and Nanophotonics Laboratory, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 2V4, Canada.
Rev Sci Instrum. 2012 May;83(5):053107. doi: 10.1063/1.4717732.
A versatile optical setup for all-terahertz (THz) time resolved pump-probe spectroscopy was designed and tested. By utilizing a dual THz pulse generator emitter module, independent and synchronized THz radiation pump and probe pulses were produced, thus eliminating the need for THz beam splitters and the limitations associated with their implementation. The current THz setup allows for precise control of the electric fields splitting ratio between the THz radiation pump and probe pulses, as well as in-phase, out-of-phase, and polarization dependent pump-probe spectroscopy. Since the present THz pump-probe setup does not require specialized THz radiation optical components, such as phase shifters, polarization rotators, or wide bandwidth beam splitters, it can be easily implemented with minimal alterations to a conventional THz time domain spectroscopy system. The present setup is valuable for studying the time dynamics of THz coherent phenomena in solid-state, chemical, and biological systems.
设计并测试了一种用于全太赫兹（THz）时间分辨泵浦-探测光谱的多功能光学装置。通过使用双太赫兹脉冲发生器发射模块，产生了独立且同步的太赫兹辐射泵浦脉冲和探测脉冲，从而无需太赫兹分束器以及与其实施相关的限制。当前的太赫兹装置允许精确控制太赫兹辐射泵浦脉冲和探测脉冲之间的电场分裂比，以及同相、异相和偏振相关的泵浦-探测光谱。由于目前的太赫兹泵浦-探测装置不需要诸如移相器、偏振旋转器或宽带分束器等专门的太赫兹辐射光学元件，因此只需对传统太赫兹时域光谱系统进行最小程度的改动就能轻松实现。该装置对于研究固态、化学和生物系统中太赫兹相干现象的时间动态具有重要价值。
