Absorptance measurements of optical coatings: a round robin

Robert Chow; John R. Taylor; Zhouling Wu; Albert Claude Boccara; Ulrike Broulik; Y. Chen; Mireille Commandre; Jean DiJon; Christoph Fleig; Adolf Giesen; Zhengxiu Fan; Pao-Kuang Kuo; Ramin Lalezari; Kent Moncur; H.-J. Obramski; Catherine Pelle; David W. Reicher; Detlev Ristau; Pierre J. Roche; Bernhard Steiger; Marshall Thomsen; Marc K. Von Gunten; Qiang Zhao

doi:10.1117/12.425027

12 April 2001 Absorptance measurements of optical coatings: a round robin

Robert Chow, John R. Taylor, Zhouling Wu, Albert Claude Boccara, Ulrike Broulik, Y. Chen, Mireille Commandre, Jean DiJon, Christoph Fleig, Adolf Giesen, Zhengxiu Fan, Pao-Kuang Kuo, Ramin Lalezari, Kent Moncur, H.-J. Obramski, Catherine Pelle, David W. Reicher, Detlev Ristau, Pierre J. Roche, Bernhard Steiger, Marshall Thomsen, Marc K. Von Gunten, Qiang Zhao

Author Affiliations +

Proceedings Volume 4347, Laser-Induced Damage in Optical Materials: 2000; (2001) https://doi.org/10.1117/12.425027
Event: Laser-Induced Damage in Optical Materials: 2000, 2000, Boulder, CO, United States

Abstract

An international round robin study was conducted on the absorption measurement of laser-quality coatings. Sets of optically coated samples were made by a reactive DC magnetron sputtering and an ion beam sputtering deposition process. The sample set included a high reflector at 514 nm and a high reflector for the near infrared (1030 to 1318 nm), single layers of silicon dioxide, tantalum pentoxide, and hafnium dioxide. For calibration purposes, a sample metalized with hafnium and an uncoated, superpolished fused silica substrate were also included. The set was sent to laboratory groups for absorptance measurement of these coatings. Whenever possible, each group was to measure a common, central area and another area specifically assigned to the respective group. Specific test protocols were also suggested in regards to the laser exposure time, power density, and surface preparation.

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Robert Chow, John R. Taylor, Zhouling Wu, Albert Claude Boccara, Ulrike Broulik, Y. Chen, Mireille Commandre, Jean DiJon, Christoph Fleig, Adolf Giesen, Zhengxiu Fan, Pao-Kuang Kuo, Ramin Lalezari, Kent Moncur, H.-J. Obramski, Catherine Pelle, David W. Reicher, Detlev Ristau, Pierre J. Roche, Bernhard Steiger, Marshall Thomsen, Marc K. Von Gunten, and Qiang Zhao "Absorptance measurements of optical coatings: a round robin", Proc. SPIE 4347, Laser-Induced Damage in Optical Materials: 2000, (12 April 2001); https://doi.org/10.1117/12.425027

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