Numerical and experimental analysis of middle-bore copper-vapor laser discharge

Deli Yu; Yongxiang Tao; Xianhua Yin; Lin Chen; Yan Yang; Hailan Li; Runwen Wang

doi:10.1117/12.344114

7 August 1998 Numerical and experimental analysis of middle-bore copper-vapor laser discharge

Deli Yu, Yongxiang Tao, Xianhua Yin, Lin Chen, Yan Yang, Hailan Li, Runwen Wang

Proceedings Volume 3549, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers II; (1998) https://doi.org/10.1117/12.344114
Event: Photonics China '98, 1998, Beijing, China

Abstract

A single simulation model describing the discharge circuitry is introduced. First the differential equations are presented. In order to calculate the laser head discharge current, the thyratron resistance with a switching time coefficient (tau) _s is investigated. The plasma conductivity used in these models is estimated using the available data on plasma parameters. Here 0.6 eV of the average electron temperature and 80 nH of thyratron inductance are assumed according to our previous model. The laser head discharge current of the differential equations is calculated with the method of Runge- Kutta. The discharge current profiles of the simulation are found to be in close agreement with the experimental data which come from 4.8-cm-diameter and 6.5-cm-diameter middle- bore Copper-Vapor Laser. In this way, the factors which effect the short rise time to increase lasing ability in the CVL (Copper-Vapor Laser) are studied on the bases of studying the storage capacitor's and the peaking capacitor's effect. As a calculation result, the inductance of the laser head takes an inferior effect to the thyratron circuit inductance on the discharge current rise time. Very good agreement exists between the calculated and measured results. This is a successful single discharge model.

Citation Download Citation

Deli Yu, Yongxiang Tao, Xianhua Yin, Lin Chen, Yan Yang, Hailan Li, and Runwen Wang "Numerical and experimental analysis of middle-bore copper-vapor laser discharge", Proc. SPIE 3549, High-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers II, (7 August 1998); https://doi.org/10.1117/12.344114

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