Laser-induced damage of dielectric-enhanced mirrors at 1064 nm

Dr. Jue Wang, Senior development associate at Corning Advanced Optics

Presented in-person in Goergen 101 and on Zoom

Zoom Information

Zoom:https://rochester.zoom.us/j/91669460596?pwd=T1VzbEFreVd3NFR5QnlUV09YWlZWZz09
Meeting ID: 916 6946 0596
Passcode: 0330

Abstract

Diamond-turned aluminum alloy is extensively used in infrared (IR) optical systems. Dielectric-enhanced mirrors improve laser damage resistance. We will discuss laser-induced damage of the dielectric-enhanced mirrors at 1064 nm and 20 ns. We will share how we (i) analyze the damage sites using a combination of optical microscopy, atomic force microscopy, scanning electron-microscopy, and laser scanning confocal microscopy; (ii) explain laser-induced damage morphology by using 3D finite-difference Time-domain (FDTD) simulation; and (iii) predict optical performance based on coating modeling. Finally, we will explore surface mitigation techniques that lead to high laser durability.

Biography

Dr. Jue Wang is a senior development associate at Corning Advanced OpAcs and an SPIE fellow endorsed in 2023. Interested in light-maGer interactions, Jue pursues fundamental understanding, while cherishing industry technical innovation for Laser OpAcs, Precision OpAcs, and A&D opAcs. Before joining Corning, he was a Professor of Physics at Tongji University. He was a German Volkswagen and DAAD research fellows at Wuerzburg University. He received his BS and Ph.D. in physics and optics from Fudan University and SITP, CAS.