Compact snapshot multiwavelength interferometer

Daodang Wang, Xiaobo Tian, Ping Xu, Jian Liang, Heng Wu, Oliver Spires, Rongguang Liang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We propose a snapshot and compact multiwavelength interferometer for real-time testing of optical surfaces with large slopes. A color camera with a micropolarizer array simultaneously captures the phase-shifted interferograms of multiple wavelengths, from which four interferograms with π∕2 phase shift at each wavelength are extracted for multiwavelength phase-shifting interferometric measurement. The accuracy of the proposed system is validated experimentally, and the testing of freeform surface with large slopes is also demonstrated. The proposed system provides a feasible way to obtain the instantaneous online measurement of freeform surfaces while minimizing environmental disturbance.

Original languageEnglish (US)
Pages (from-to)4463-4466
Number of pages4
JournalOptics letters
Volume44
Issue number18
DOIs
StatePublished - Sep 15 2019

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interferometers
interferometry
testing time
slopes
wavelengths
phase shift
disturbances
cameras
color

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Wang, D., Tian, X., Xu, P., Liang, J., Wu, H., Spires, O., & Liang, R. (2019). Compact snapshot multiwavelength interferometer. Optics letters, 44(18), 4463-4466. https://doi.org/10.1364/OL.44.004463

Compact snapshot multiwavelength interferometer. / Wang, Daodang; Tian, Xiaobo; Xu, Ping; Liang, Jian; Wu, Heng; Spires, Oliver; Liang, Rongguang.

In: Optics letters, Vol. 44, No. 18, 15.09.2019, p. 4463-4466.

Research output: Contribution to journalArticle

Wang, D, Tian, X, Xu, P, Liang, J, Wu, H, Spires, O & Liang, R 2019, 'Compact snapshot multiwavelength interferometer', Optics letters, vol. 44, no. 18, pp. 4463-4466. https://doi.org/10.1364/OL.44.004463
Wang D, Tian X, Xu P, Liang J, Wu H, Spires O et al. Compact snapshot multiwavelength interferometer. Optics letters. 2019 Sep 15;44(18):4463-4466. https://doi.org/10.1364/OL.44.004463
Wang, Daodang ; Tian, Xiaobo ; Xu, Ping ; Liang, Jian ; Wu, Heng ; Spires, Oliver ; Liang, Rongguang. / Compact snapshot multiwavelength interferometer. In: Optics letters. 2019 ; Vol. 44, No. 18. pp. 4463-4466.
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