4 November 2014 Low-loss and high damage-threshold mirror development for gravitational-wave detectors
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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.
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Daisuke Tatsumi, Daisuke Tatsumi, Akitoshi Ueda, Akitoshi Ueda, Hitoki Yoneda, Hitoki Yoneda, Kazunari Sato, 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); doi: 10.1117/12.2064809; https://doi.org/10.1117/12.2064809

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