We describe the design, fabrication, and performance of high-efficiency transmission gratings fabricated in bulk fused silica for use in high-power ultraviolet laser systems. The gratings exhibit a diffraction efficiency of 94% in order m=-1 and a damage threshold greater than 13>J/cm<sup> 2</sup> for 3-ns pulses at 351 nm. Model calculations and experimental measurements are in good agreement.
© 1997 Optical Society of America
H. T. Nguyen, B. W. Shore, S. J. Bryan, J. A. Britten, R. D. Boyd, and M. D. Perry, "High-efficiency fused-silica transmission gratings," Opt. Lett. 22, 142-144 (1997)