光学
物理
衍射
角度分辨率(图形绘制)
光谱学
衍射光栅
栅栏
光谱分辨率
职位(财务)
梁(结构)
谱线
数学
财务
组合数学
量子力学
天文
经济
作者
Siyu Zhou,Ruilin Jiang,Ruixue Zhang,Liheng Shi,Di Zhang,Guanhao Wu
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-01-23
卷期号:48 (5): 1104-1104
被引量:2
摘要
The dual-comb technique is a powerful tool in industrial inspection and scientific research and is capable of realizing ultrahigh-resolution and fast broadband spectral measurements. We propose an absolute angular-position measurement method based on dual-comb spectroscopy. With a simple layout, the absolute angular position can be naturally determined through the traceable and wide-amplitude spectra of the autocollimation diffracted beams of the target grating. We experimentally demonstrate that a precision of 0.12 arcsec in the dynamic range of approximately 6660 arcsec, along with a 1 kHz repetition rate difference, is achieved. Compared with a commercial autocollimator, over 1000 arcsec, the comparison residuals are kept within ±0.3 arcsec.
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