Abstract

Spectroscopic studies of the uv emission from surface-discharge sparks across Al₂O₃, BN, ZnO, ZrO₂, BaTiO₃, ZnO·Al₂O₃, and Cr₂O₃·Al₂O₃ substrates have been performed in He, N₂, CO₂, Ar, SF₆, and Ar + i-C₃F₇I gases at pressures of 1–10 atm. Considerable differences were found in the performance of the various substrates; based on absolute measurements which are believed to be conservative, an electrical-to-optical conversion efficiency of 9.4 ± 1.1% for uv emission in the 2500–2900-Å iodine–laser pumpband was obtained from discharges across a Cr₂O₃·Al₂O₃ substrate in Ar gas. Pumpband energy densities of several J/cm² are readily attainable.

© 1977 Optical Society of America

Ablative flashlamps for high peak power dye lasers

Y. Levy, G. Neumann, and D. Treves
Appl. Opt. 16(8) 2293-2296 (1977)

High-energy short-pulse flashlamps: operating characteristics

T. Efthymiopoulos and B. K. Garside
Appl. Opt. 16(1) 70-76 (1977)

Ultraviolet laser excitation source

Ja H. Lee, D. R. McFarland, and F. Hohl
Appl. Opt. 19(19) 3343-3348 (1980)

Vacuum ultraviolet radiometry. 3: The argon mini-arc as a new secondary standard of spectral radiance

J. M. Bridges and W. R. Ott
Appl. Opt. 16(2) 367-376 (1977)

Spectral enhancement of near uv xenon flashlamps

M. A. Gusinow
Appl. Opt. 14(11) 2645-2649 (1975)