Numerical simulation of the magnetically gain-switched chemical oxygen-iodine laser

Hao Liu; Kenan Wu; Lin Wang; Yuelong Zhang; Benjie Fang; Qingwei Li; Yuqi Jin

doi:10.1016/j.heliyon.2022.e10530

Numerical simulation of the magnetically gain-switched chemical oxygen-iodine laser

Heliyon. 2022 Sep 6;8(9):e10530. doi: 10.1016/j.heliyon.2022.e10530. eCollection 2022 Sep.

Authors

Hao Liu¹, Kenan Wu¹, Lin Wang¹, Yuelong Zhang¹, Benjie Fang¹, Qingwei Li¹, Yuqi Jin¹

Affiliation

¹ Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, Liaoning, China.

Abstract

During the operation of the magnetically gain-switched chemical oxygen-iodine laser (MGS-COIL), the transition intensity of hyperfine transition line 2-2 can exceed that of line 3-4, which is the dominant line at zero magnetic field. For this reason, a simulation model including both 3-4 and 2-2 transition lines is necessary to describe the mode buildup process in MGS-COIL. In this paper, we assume that 3-4 and 2-2 transition lines simultaneously oscillate in laser cavity. The propagation of optical field is calculated based on FFT. The required frequency, rise time and residual field of the magnetic gain-switch for a high-performance MGS-COIL are analyzed based on simulation results.

Keywords: Chemical oxygen-iodine laser; Coupling simulation; Magnetic gain-switch.