Influence of SiO2 undercoat on the laser-induced damage threshold of 355nm LaF3/AlF3 multilayer reflectors

Suppression of nano-absorbing precursors and damage mechanism in optical coatings for 3ω mirrors

“…Therefore, damage issues about the 3ω mirrors are the prior target to be resolved. Recently, interest in the harmonic separation coatings has been motivated again due to the high LIDT of fluoride multilayers [1,[7][8][9]. Nevertheless, the stress-induced crazing limits the number of layer pairs (i.e., the reflectance) as well as the large size optics fabrication.…”

Stress mechanism of pulsed laser-driven damage in thin film under nanosecond ultraviolet laser irradiation

“…All three structures (Table 1) were manufactured through the same coating process. The details of the coating process are discussed in our previous work [9] . The stress of films can be obtained using the curvature method.…”