摘要
We propose and numerically demonstrate a simple and background-free all-optical chiral spectroscopy technique for gas molecules.Our approach is based on high harmonic generation driven by a new type of laser beam that is produced by one linearly polarized single-color beam passing through a lens and a prism.It is shown that chiral and achiral signals are completely separated in frequency,indicating strong background-free and highly sensitive chirality detection.We believe this all-optical method can open new opportunities for ultrafast detection for chiral dynamics in the femtoseond to attosecond time scale.
作者
Yuhang Chen
Xiaosong Zhu
Pengfei Lan
Peixiang Lu
陈宇航;祝晓松;兰鹏飞;陆培祥(Wuhan National Laboratory for Optoelectronics and School of Physics,Huazhong University of Science and Technology,Wuhan 430074,China;Optics Valley Laboratory,Wuhan 430074,China)
基金
supported by the Science and Technology Planning Project of Guangdong Province(No.2018B090944001)
National Natural Science Foundation of China(NSFC)(Nos.12174134,12021004,and 91950202)
National Key Research and Development Program of China(No.2019YFA0308300)。
