Title :
Production of high average power UV by second-harmonic and sum-frequency generation from copper-vapor lasers
Author :
Coutts, David W. ; Brown, Daniel J.W.
Author_Institution :
Centre for Lasers & Applications, Macquarie Univ., Sydney, NSW, Australia
fDate :
9/1/1995 12:00:00 AM
Abstract :
Progress in high average power UV generation by nonlinear frequency conversion of the output of copper-vapor lasers (CVL´s) is reviewed. The specific parameters controlling the efficiency of nonlinear frequency conversion using CVL´s are highlighted, with CVL beam quality and matching the optical beam delivery system to the characteristics of the nonlinear crystal being identified as the most significant issues. Recent experimental studies of second harmonic generation (SHG) with single-CVL oscillators and CVL oscillator-amplifier systems show that by careful optimization of the CVL pump laser and beam delivery systems, it is now possible to generate multiwatt average powers in the UV with high optical conversion efficiency (up to 35%) and overall electrical efficiency (approaching 0.1%)
Keywords :
copper; gas lasers; optical harmonic generation; 0.1 percent; 35 percent; Cu; Cu-vapor lasers; beam quality; electrical efficiency; high average power UV generation; multiwatt average powers; nonlinear crystal; nonlinear frequency conversion; optical beam delivery system; optical conversion efficiency; oscillator-amplifier systems; oscillators; second-harmonic generation; sum-frequency generation; Frequency conversion; Laser beams; Laser excitation; Nonlinear control systems; Optical beams; Optical control; Optical harmonic generation; Power generation; Power lasers; Production;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.473658
