Measurement system for diffraction efficiency of convex gratings

Liu, Peng; Chen, Xinhua; Zhou, Jiankang; Zhao, Zhicheng; Liu, Quan; Luo, Chih-Wei; Tang, Minxue; Shen, Weimin

doi:10.1117/12.2268126

Cited by 1 publication

(1 citation statement)

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“…So far, the relative diffraction efficiency of gratings has been measured in three different ways: the line spectrum method, the continuous scan method, and the Fourier transform method [ 90 ]. Because the theoretical diffraction efficiency curve of a convex grating is smoother in its operating band, the researchers of study [ 91 ] chose the line spectrum method to measure the diffraction efficiency. The line spectral method has some benefits, such as a high level of wavelength accuracy and a simple structure.…”

Section: Quality Characterization Of Convex Blazed Gratings For Hyper...mentioning

confidence: 99%

Progress in the Preparation and Characterization of Convex Blazed Gratings for Hyper-Spectral Imaging Spectrometer: A Review

Peng

Guan

et al. 2022

Micromachines

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Convex blazed gratings, which can effectively broaden the spectral range and improve spectral resolution, have gradually evolved into a crucial optical component for lightweight and compact imaging spectroscopy instruments. Their design, processing, and testing involve multidisciplinary interdisciplinary scientific issues, and they continue to be a major area of research in imaging optics applications. This paper summarizes the effects of various grating groove shapes and structural parameters on the spectral range and diffraction efficiency of convex blazed gratings, after providing a brief introduction to the typical functions and applications of convex blazed gratings. Firstly, the latest progress in typical processing methods for convex blazed gratings is reviewed. It focuses on the current fabrication processes and reviews their capabilities in creating convex blazed gratings from three main types of technologies, namely ultra-precision machining, high-energy density beam processing, and chemically assisted fabrication processes. Secondly, the adaptability of the manufacturing process for convex blazed gratings on different scales is summarized, analyzing the adaptation of current procedures to various grating fabrication scales and their bottlenecks. Finally, the characterization methods and future feasible characterization methods for convex blazed gratings are reviewed. The development trend of efficient and precise preparation of convex blazed gratings is pointed out.

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Section: Quality Characterization Of Convex Blazed Gratings For Hyper...mentioning

confidence: 99%