Work

High-speed measurement method for diffraction efficiency of gratings in broad range wavelength based on AOTF

Year: 2024

Type: article

Abstract: Diffraction efficiency is a critical indicator of grating performance. Traditional single-point measurement methods are slow, often taking several hours to generate a complete diffraction efficiency curve. Existing fast measurement techniques are limited to providing efficiency curves only within the 550–750 nm wavelength range. Therefore, this paper proposes a new high-speed measurement method that leverages an acousto-optic tunable filter (AOTF), an integrating sphere, and a concave mirror to achieve rapid and precise diffraction efficiency measurements. Experimental results demonstrate that for gratings with 300–1200 grooves per millimeter, this method can complete measurements within the 500–1000 nm wavelength range in under one minute. The mean absolute error is less than 2%, with a repeatability error also below 2%.

Source: Optics Express

DOI: 10.1364/oe.532391

Authors: Xieluyao Xu, Wenhao Li, Jirigalantu, Hongzhu Yu, Jiawei Zhang, Hongzhi Liang

Institutions: Chinese Academy of Sciences, University of Chinese Academy of Sciences

Language: English

Topic: Optical and Acousto-Optic Technologies

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Natural Science Foundation of China