Autocollimation employing optical frequency comb

H. Matsukuma; K. Ikeda; R. Sato; W. Gao

doi:10.1117/12.3005523

20 September 2023 Autocollimation employing optical frequency comb

H. Matsukuma, K. Ikeda, R. Sato, W. Gao

Proceedings Volume 12607, Optical Technology and Measurement for Industrial Applications Conference; 1260704 (2023) https://doi.org/10.1117/12.3005523
Event: Optics and Photonics International Congress, 2023, Yokohama, Japan

Abstract

Methods of using optical frequency comb for angle measurement are discussed. Autocollimation is the most commonly used method for angular displacement measurement. Here, a diffraction grating is attached to the measurement target instead of a mirror, which is used in the conventional autocollimation method. Each mode of the optical frequency comb with a wide wavelength bandwidth is angularly dispersed by the grating. The angular displacement of the target is determined from the most strongly detected optical frequency modes.

Citation Download Citation

H. Matsukuma, K. Ikeda, R. Sato, and W. Gao "Autocollimation employing optical frequency comb", Proc. SPIE 12607, Optical Technology and Measurement for Industrial Applications Conference, 1260704 (20 September 2023); https://doi.org/10.1117/12.3005523

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