Low-loss and high damage-threshold mirror development for gravitational-wave detectors

Daisuke Tatsumi; Akitoshi Ueda; Hitoki Yoneda; Kazunari Sato

doi:10.1117/12.2064809

4 November 2014 Low-loss and high damage-threshold mirror development for gravitational-wave detectors

Daisuke Tatsumi, Akitoshi Ueda, Hitoki Yoneda, Kazunari Sato

Proceedings Volume 9237, Laser-Induced Damage in Optical Materials: 2014; 923703 (2014) https://doi.org/10.1117/12.2064809
Event: SPIE Laser Damage, 2014, Boulder, Colorado, United States

Abstract

Low-loss and high damage threshold mirrors are needed for laser interferometer-type gravitational-wave detectors. Collaborative development with Japanese company of SIGMA KOKI CO., LTD., National astronomical observatory of Japan and Institute for Laser Science, University of Electro-Communications was made for this purpose. As a result, high reflectivity mirror of 99.99% for 1064nm has both low-scattering loss of less than 10ppm and high-damage threshold of over 400 J/cm². Such mirrors can be applied for high finesse cavity of more than 10000 with high laser input power of over 10 Watts. The mirror will offer great benefit for various precise measurements with high power lasers.

Citation Download Citation

Daisuke Tatsumi, Akitoshi Ueda, Hitoki Yoneda, and Kazunari Sato "Low-loss and high damage-threshold mirror development for gravitational-wave detectors", Proc. SPIE 9237, Laser-Induced Damage in Optical Materials: 2014, 923703 (4 November 2014); https://doi.org/10.1117/12.2064809

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