Displacement measurement in a Sagnac interferometer with thermal light second-order correlation

De Qin Xu; Ling Yu Dou; De Zhong Cao; Xin Bing Song

doi:10.1364/AO.393599

Displacement measurement in a Sagnac interferometer with thermal light second-order correlation

De Qin Xu^*, Ling Yu Dou, De Zhong Cao, Xin Bing Song

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We report a displacement measurement experiment in second-order correlation and subwavelength correlation with thermal light. Our target is a single slit, which is inserted into a Sagnac interferometer to mimic a double-slit apparatus. According to the correlated diffraction pattern, we can predict the excursion of the slit from the optical axis. When the slit is shifted, we can predict the displacement accurately. We also present the mathematical presentations of beam propagation and reflection in comprehensive deduction.

Original language	English
Pages (from-to)	5576-5580
Number of pages	5
Journal	Applied Optics
Volume	59
Issue number	18
DOIs	https://doi.org/10.1364/AO.393599
Publication status	Published - 20 Jun 2020

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10.1364/AO.393599

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abstract = "We report a displacement measurement experiment in second-order correlation and subwavelength correlation with thermal light. Our target is a single slit, which is inserted into a Sagnac interferometer to mimic a double-slit apparatus. According to the correlated diffraction pattern, we can predict the excursion of the slit from the optical axis. When the slit is shifted, we can predict the displacement accurately. We also present the mathematical presentations of beam propagation and reflection in comprehensive deduction.",

author = "Xu, {De Qin} and Dou, {Ling Yu} and Cao, {De Zhong} and Song, {Xin Bing}",

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AU - Xu, De Qin

AU - Dou, Ling Yu

AU - Cao, De Zhong

AU - Song, Xin Bing

PY - 2020/6/20

Y1 - 2020/6/20

N2 - We report a displacement measurement experiment in second-order correlation and subwavelength correlation with thermal light. Our target is a single slit, which is inserted into a Sagnac interferometer to mimic a double-slit apparatus. According to the correlated diffraction pattern, we can predict the excursion of the slit from the optical axis. When the slit is shifted, we can predict the displacement accurately. We also present the mathematical presentations of beam propagation and reflection in comprehensive deduction.

AB - We report a displacement measurement experiment in second-order correlation and subwavelength correlation with thermal light. Our target is a single slit, which is inserted into a Sagnac interferometer to mimic a double-slit apparatus. According to the correlated diffraction pattern, we can predict the excursion of the slit from the optical axis. When the slit is shifted, we can predict the displacement accurately. We also present the mathematical presentations of beam propagation and reflection in comprehensive deduction.

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Displacement measurement in a Sagnac interferometer with thermal light second-order correlation

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