Abstract

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.

© 2023 Optica Publishing Group

Two-dimensional angle measurement with sub-arcsecond precision and MHz update rate using heterodyne interferometry with optical frequency comb

Chen Lin, Siyu Zhou, Liheng Shi, Yuetang Yang, and Guanhao Wu
Opt. Lett. 49(3) 526-529 (2024)

Angular velocity measurement with wide range based on dual-comb Sagnac interferometer

Ruyu Ma, Haoyang Yu, Qiuying Ma, Qian Zhou, and Kai Ni
Opt. Lett. 47(3) 730-733 (2022)

Electro-optic THz dual-comb architecture for high-resolution, absolute spectroscopy

Borja Jerez, Frederik Walla, Andrés Betancur, Pedro Martín-Mateos, Cristina de Dios, and Pablo Acedo
Opt. Lett. 44(2) 415-418 (2019)

Absolute angular measurement with optical frequency comb using a dispersive interferometry

Xu Liang, Jiarui Lin, Tengfei Wu, Linghui Yang, Yu Wang, Yang Liu, and Jigui Zhu
Opt. Express 28(24) 36095-36108 (2020)

Dual-comb spectroscopy resolved three-degree-of-freedom sensing

Siyu Zhou, Vunam Le, Shilin Xiong, Yuetang Yang, Kai Ni, Qian Zhou, and Guanhao Wu
Photon. Res. 9(2) 243-251 (2021)