Yang T T, Burde D H, Merry G A, Harris D G, Pugh L A, Tillotson J H, Turner C E, Copeland D A
Appl Opt. 1988 Jan 1;27(1):49-57. doi: 10.1364/AO.27.000049.
An analysis is presented of the lasing spectrum of the rovibronic XeF(B-X) transition as observed in an electron-beam pumped laser. The intricate spin-split rotational and vibrational structure in the 35.1- and 353-nm lasing emission is investigated, and insight is gained on the processes responsible for the vibrational, rotational, and spin inhomogeneities manifested in the spectra. Explanations of the data are developed in terms of near-resonant vibration-rotation energy transfer, rotational relaxation rate differences in the B and X states, rapid dissociation of the rotational resonances near the dissociation limit of the ground state, relatively slow collisional spin relaxation, and optical coupling of spin states. The implications for narrowband extraction in the 351- and 353-nm bands are noted. The rotational relaxation rates of the X and B states of XeF are estimated in the Appendix.
本文对电子束泵浦激光器中观测到的rovibronic XeF（B-X）跃迁的激光光谱进行了分析。研究了35.1纳米和353纳米激光发射中复杂的自旋分裂转动和振动结构，并深入了解了导致光谱中出现振动、转动和自旋不均匀性的过程。从近共振振动-转动能量转移、B态和X态的转动弛豫率差异、基态解离极限附近转动共振的快速解离、相对较慢的碰撞自旋弛豫以及自旋态的光学耦合等方面对数据进行了解释。文中指出了在351纳米和353纳米波段进行窄带提取的意义。附录中估计了XeF的X态和B态的转动弛豫率。
