All-optical ultrafast polarization switching of terahertz radiation by impulsive molecular alignment |
| |
Authors: | Li Min Pan Haifeng Tong Yuqi Chen Cheng Shi Yi Wu Jian Zeng Heping |
| |
Institution: | State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, China. |
| |
Abstract: | We experimentally demonstrate ultrafast polarization switching of terahertz (THz) radiation generated by dual-color driving pulses composed of orthogonally polarized fundamental and second-harmonic waves, which can be controlled by field-free molecular alignment in air by modulating the relative phase between the two field components as a transient dynamic wave plate. By fine-tuning the time delay to properly match the molecular alignment revivals, a significant polarization modulation of the THz radiation is observed and both linearly and elliptically polarized THz radiations can be obtained. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|