Work

Stress Measurement and Defect Identification of Optical Components Based on Digital Holographic Photoelasticity

Year: 2025

Type: article

Abstract: To realize defect detection and locate the abnormal areas of optical components, we propose a high-sensitivity detection method based on the principle of digital holographic photoelasticity measurement. First, holograms are acquired before and after external force loading. Then, the complex amplitude is reconstructed, and the phase difference is calculated accordingly. Variables concerning birefringence are solved by obtaining multiple groups of holograms with different reference polarization directions and constructing a ratio function containing only the interference light intensity. Principal stress is calculated after external force loading. The proposed method can be applied to the detection of glass surface cracks, internal holes, and damage, and the reliability and performance of high-powered laser optical components can be guaranteed.

Source: Nanomanufacturing and Metrology

DOI: 10.1007/s41871-025-00274-9

Authors: Dongyang Hu, Qianru Zheng, Chen Wang, Xiangchao Zhang

Institution: Fudan University

Language: English

Topic: Digital Holography and Microscopy

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

Funders: Natural Science Foundation of Shanghai, National Natural Science Foundation of China