Assessment of multi-pulse laser-induced damage threshold of metallic mirrors for Thomson scattering system

作者：Sato Masaya^*; Kajita Shin; Yasuhara Ryo; Ohno Noriyasu; Tokitani Masayuki; Yoshida Naoaki; Tawara Yuzuru

来源：Optics Express, 2013, 21(8): 9333-9342.

DOI：10.1364/OE.21.009333

Multi-pulse laser-induced damage threshold (LIDT) was experimentally investigated up to similar to 10(6) pulses for Cu, Ag mirrors. The surface roughness and the hardness dependence on the LIDT were also examined. The LIDT of OFHC-Cu decreased with the pulse number and was 1.0 J/cm(2) at 1.8 x 10(6) pulses. The expected LIDT of cutting Ag at 10(7) pulses was the highest; Ag mirror would be one of the best choices for ITER Thomson scattering system. For the roughness and hardness, material dependences of LIDT are discussed with experimental results.

• 出版日期2013-4-22