Yuanan Zhao

Surfaces, Interfaces, and ApplicationsFebruary 21, 2025 Kun Shuai Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800, China Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China Key Laboratory of Materials for High Power Laser, Chinese Academy of Sciences, Shanghai 201800, China Keqiang Qiu National Synchrotron Radiation Laboratory, University of Science and Technology of...

Abstract In the current solution for multiwavelength achromatic flat lenses, a one-to-one correspondence exists between the number of writing phase distributions and the number of achromatic wavelengths. Breaking this correspondence requires a complex phase design and parameter optimization.

Abstract This Letter reports on the results of experiments aimed at obtaining high-quality super-smooth surfaces by investigating the laser polishing of fused silica. A maximum reduction in root-mean-square roughness to 0.156 nm was achieved, and laser-polished surfaces exhibited virtually no micro-defects or damage. A subsequent analysis using a multi-physics numerical model revealed the underlying physical mechanism of laser polishing of fused silica.