High-damage-threshold pinhole for glass fusion laser applications

Norman A. Kurnit; S. A. Letzring; Randall P. Johnson

doi:10.1117/12.354211

23 July 1999 High-damage-threshold pinhole for glass fusion laser applications

Norman A. Kurnit, S. A. Letzring, Randall P. Johnson

Proceedings Volume 3492, Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion; (1999) https://doi.org/10.1117/12.354211
Event: Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, 1998, Monterey, CA, United States

Abstract

We are investigating methods to fabricate high-damage- threshold spatial-filter pinholes that might not be susceptible to plasma closure for relatively high energies and long pulses. These are based on the observation that grazing-incidence reflection from glass can withstand in excess of 5kJ/cm² without plasma formation. The high damage threshold result from both the cos(theta) spreading of the energy across the surface and the reflection of large fraction of the energy from the surface, thereby greatly reducing the field strength within the medium.

Citation Download Citation

Norman A. Kurnit, S. A. Letzring, and Randall P. Johnson "High-damage-threshold pinhole for glass fusion laser applications", Proc. SPIE 3492, Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, (23 July 1999); https://doi.org/10.1117/12.354211

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