H Xuan, H Igarashi, S Ito, C Qu, Z Zhao,
Y Kobayashi - Applied sciences, 2018 - mdpi.com
At present, deep ultraviolet (DUV) lasers at the wavelength of fourth harmonics of 1 μm (266
nm/258 nm) and at the wavelength of 193 nm are widely utilized in science and industry. We …