Role of rotational coherence in femtosecond-pulse-driven nitrogen ion lasing
Hongqiang Xie, Hongbin Lei, Guihua Li, Qian Zhang, Xiaowei Wang, Jing Zhao, Zhiming Chen, Jinping Yao, Ya Cheng, Zengxiu Zhao
Abstract
The authors experimentally investigated the rotationally resolved polarization characteristics of nitrogen ion lasing using a pump-seed scheme. The paper finds that the polarization of P and R branches lasing exhibit abnormal dependence on the angle between the polarizations of the pump and the seed. The underlying mechanism is ascribed to the cascaded Raman processes following ionization.
Topics & Concepts
Lasing thresholdFemtosecondIonPolarization (electrochemistry)IonizationLaserNitrogenMaterials scienceAtomic physicsCoherence (philosophical gambling strategy)Raman spectroscopyOpticsChemistryPhysicsOrganic chemistryPhysical chemistryQuantum mechanicsLaser-Matter Interactions and ApplicationsAdvanced Fiber Laser TechnologiesLaser-Plasma Interactions and Diagnostics