Kawada Yoichi, Yasuda Takashi, Nakanishi Atsushi, Akiyama Koichiro, Takahashi Hironori
Central Research Laboratory, Hamamatsu Photonics K K, Hamakita-ku, Hamamatsu City, Shizuoka, Japan.
Opt Express. 2011 Jun 6;19(12):11228-35. doi: 10.1364/OE.19.011228.
We developed a single-shot terahertz pulse measurement technique using pulse-front tilting of an ultra-short probe pulse and demonstrated single-shot terahertz spectroscopy. A transmission grating was used to introduce a sufficiently large pulse-front tilt angle. A measuring time range of 23.8 ps was achieved. The measured temporal waveforms were corrected in consideration of the nonlinearity arising from the crossed-Nicols arrangement employed and the beam profiles of the probe and terahertz pulses. The characteristic spectrum of lactose was measured with a single terahertz pulse, and the effectiveness of our single-shot technique was confirmed by comparison with a conventional sampling method.
我们开发了一种利用超短探测脉冲的脉冲前沿倾斜的单次太赫兹脉冲测量技术，并展示了单次太赫兹光谱学。使用透射光栅引入足够大的脉冲前沿倾斜角。实现了23.8 ps的测量时间范围。考虑到采用的交叉尼科耳装置以及探测脉冲和太赫兹脉冲的光束轮廓所产生的非线性，对测量的时间波形进行了校正。用单个太赫兹脉冲测量了乳糖的特征光谱，并通过与传统采样方法比较证实了我们单次技术的有效性。
