Development of low-loss sapphire mirrors

David Blair, M. Notcutt, C.T. Taylor, E.K. Wong, C. Walsh, A. Leistner, J. Seckold, J.-M. Mackowski, P. Ganau, C. Michel, L. Pinard

Research output: Contribution to journalArticle

10 Citations (Scopus)


We report on the successful development of low-loss sapphire mirrors for use at a 1-mu m wavelength. Methods for polishing and coating are described. The analysis of each process shows a roughness of better than 0.1 nm, a coating scattering of 1 ppm, and a surface scattering of 13 ppm. The mirrors have been characterized in a Fabry-Perot cavity, having a finesse of 100,000. Mode doublets result from the birefringence of the coatings. (C) 1997 Optical Society of America
Original languageEnglish
Pages (from-to)337-341
JournalApplied Optics
Issue number1
Publication statusPublished - 1997

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