Development of terahertz molecular-modulated mode-locked laser

通过腔内受激拉曼散射和四波混频，证明了连续波多频激光器的存在。在被动稳定条件下，产生第一斯托克斯辐射、第二斯托克斯辐射和第一反斯托克斯辐射。利用配备高灵敏度非线性探测器的干涉自相关器，观察到重复频率为17.6太赫兹的强度调制光脉冲串。此外，本项目提出的一种方法使我们能够定量测量多频发射线之间的相滑。

The continuous-wave-based multifrequency laser has been demonstrated through intracavity stimulated Raman scattering and four-wave mixing. Under a passively stabilized condition, the first Stokes, second Stokes and first anti-Stokes emission are generated. A intensity-modulated optical pulse train at a repetition rate of 17.6 THz is observed using an interferometric autocorrelator equipped with a high-sensitive nonlinear detector. In addition, a method proposed in this project allows us to measure a phase-slip between multifrequency emission lines quantitatively.