Marrs C D, Faith W N, Dancy J H, Porteus J O
US Naval Weapons Center, Physics Division, Michelson Laboratory, China Lake, California 93555, USA.
Appl Opt. 1982 Nov 15;21(22):4063-6. doi: 10.1364/AO.21.004063.
A triaxial flashlamp-pumped dye laser has been used to perform laser damage testing of metal surfaces in the blue-green spectral region. Using LD490 laser dye, the laser produces 0.18-J, 0.5-microsec pulses at 492 nm. The spatial profile of the focused beam is measured in orthogonal directions in the plane of the sample surface. The orthogonal profiles are flat-topped Gaussians with 1/e(2) widths of 270 microm. Multithreshold laser damage test results are presented for polished Mo, diamond-turned high-purity Al alloy, diamond-turned bulk Cu, and diamond-turned electrodeposits of Ag and Au on Cu. Comparisons are made between calculated and experimentally measured slip and melt thresholds.
一台三轴闪光灯泵浦染料激光器已被用于在蓝绿色光谱区域对金属表面进行激光损伤测试。使用LD490激光染料，该激光器在492纳米处产生0.18焦耳、0.5微秒的脉冲。在样品表面平面内的正交方向上测量聚焦光束的空间分布。正交分布是平顶高斯分布，1/e(2)宽度为270微米。给出了抛光钼、金刚石车削的高纯铝合金、金刚石车削的块状铜以及金刚石车削的铜上银和金的电沉积物的多阈值激光损伤测试结果。对计算得出的和实验测量的滑移阈值及熔化阈值进行了比较。
