Copper vapor laser (CVL) technology has developed rapidly over the last few years to the point where high average power (up to 60-W), high pulse rate (10-20-kHz) devices are now widely available. Wavelength conversion of the green 510.8-nm and yellow 578.2-nm GVL outputs into the UV is now of considerable interest so as to extend the applicability of the CVL to photolithography, UV-induced fluorescence mapping, and other technologies requiring UV laser sources of moderate power. To date there has been only one report describing second harmonic generation (SHG) of CVL for which the crystal (β-BBO was used.1 Average powers of up to 40 mW at the second harmonic of the green (λ = 255.3 nm) were obtained from a 5-WCVL.

© 1989 Optical Society of America

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