Angle-resolved scatter measurements of laser-damaged DKDP crystals using a bidirectional scatter diagnostics

Regula Fluck; Paul J. Wegner; Lynn Matthew Sheehan; Lloyd A. Hackel

doi:10.1117/12.425048

12 April 2001 Angle-resolved scatter measurements of laser-damaged DKDP crystals using a bidirectional scatter diagnostics

Regula Fluck, Paul J. Wegner, Lynn Matthew Sheehan, Lloyd A. Hackel

Author Affiliations +

Proceedings Volume 4347, Laser-Induced Damage in Optical Materials: 2000; (2001) https://doi.org/10.1117/12.425048
Event: Laser-Induced Damage in Optical Materials: 2000, 2000, Boulder, CO, United States

Abstract

We built a bi-directional scatter diagnostic to measure and quantify losses due to scattering and absorption in harmonic generation crystals (DKDP) for the National Ignition Facility. The diagnostic performs angle-resolved photometry at 351 nm, and is capable of both near-specular transmission and large angle scatter measurements. In the near-specular configuration, the transmission can be measured with variable acceptance angle ranging from +/- 65 (mu) rad up to +/- 60 mrad. A silicon photo detector and a scientific- grade CCD camera quantify total energy and energy distribution. A linear swing arm detection system enables large angle scatter measurements of 360 degree(s), in principal, with step sizes as small as 0.01 degree(s) and variable collection angle ranging from 1 to 20 mrad. The design of this instrument and its application to the measurement of optical scatter from laser damage and final finishing process of DKDP are discussed.

Citation Download Citation

Regula Fluck, Paul J. Wegner, Lynn Matthew Sheehan, and Lloyd A. Hackel "Angle-resolved scatter measurements of laser-damaged DKDP crystals using a bidirectional scatter diagnostics", Proc. SPIE 4347, Laser-Induced Damage in Optical Materials: 2000, (12 April 2001); https://doi.org/10.1117/12.425048

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