The Electrical Parameters Modeling and Experimentation of Copper Vapor Laser

Fatemeh Rafighi,Saeed Behrouzinia,Kamran Khorasani,Saeid Marjani,Masoud Sabaghi

doi:10.4236/cs.2016.71003

Abstract

In this paper, the present developments of copper vapor laser technology were computational modeling and simulations methods. In most of the cases, before the experiment, the functions of electrical parameters can be predicted by the use of physical simulation codes. A single simulation model describing the discharge circuitry was introduced. By solving the equations of circuit via Runge-Kutta method, the current and voltage pulses of the discharge tube were investigated, which are in good agreement with the experimental results of the same laser.

Highlights

The characteristics of lasers have improved extremely [1]-[25].The copper vapor lasers (CVL) with green and yellow wavelengths of 510.6 nm and 578.2 nm are known for their high average output power, high repetition frequencies (1 - 150 kHz) and high efficiency (1% - 2%) [26] [27]
In most of the cases, before the experiment, the functions of some of the electrical parameters can be predicted by the use of physical simulation codes
Rth is the resistance of thyratron and Rd is the resistance of laser tube, i.e. plasma resistance of laser tube due to the collisions between conduction electrons and the components of plasma such as copper and neon atoms, which can be obtained via following relation [31]: Rd

Summary

Introduction

The characteristics of lasers have improved extremely [1]-[25].The copper vapor lasers (CVL) with green and yellow wavelengths of 510.6 nm and 578.2 nm are known for their high average output power (higher than 100 W), high repetition frequencies (1 - 150 kHz) and high efficiency (1% - 2%) [26] [27]. CVLs are used as pumping sources for frequency conversion to visible, ultra violet and infra-red ranges, conducting lasers, skin diseases treatment and oncology. It is increasingly applied in industries and material processing [28]. Before the laser devices are practically developed, simulation methods can predict that how the laser function is dependent on the external exciting parameters and geometrical characteristics of the circuit. The paper is organized as follows: Section 2 briefly describes the discharge circuit characteristics and experimental setup, Section 3 provides the details of the simulation of current and voltage pulses, and Section 4 presents the results and discussions.

Discharge Circuit Characteristics and Experimental Setup

Simulation of Current and Voltage Pulses

Results and Discussions

Conclusion