Open AccessAssessment of multi-pulse laser-induced damage threshold of metallic mirrors for Thomson scattering system
Author(s) -
Masaya Sato,
Shin Kajita,
Ryo Yasuhara,
Noriyasu Ohno,
M. Tokitani,
N. Yoshida,
Yuzuru Tawara
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.009333
Subject(s) - materials science , optics , laser , pulse (music) , surface roughness , scattering , thomson scattering , surface finish , composite material , physics , detector
Multi-pulse laser-induced damage threshold (LIDT) was experimentally investigated up 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 × 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.