Wavelength-modulated standing-wave interferometry for small out-of-plane displacement measurement

Ju Yi Lee, Chia Tze Hung

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

The incorporation of wavelength-modulated light into optical standing-wave interferometry is demonstrated for measuring small out-of-plane displacements. The optical standing-wave is generated by the superposition of the forward- and backward-propagating light beams, partially scattered by a single-layer nano-sphere scattering plate. The time-domain phase quadrature technique is used to detect and analyze the phase variation of the light scattered from the scattering plate for detecting small out-of-plane displacements. The experiments demonstrate the ability of the proposed method to measure out-of-plane displacements of several tens of micrometers with nanometric resolution. We also investigate periodic nonlinearity errors caused by changes in the modulation of the angular frequency and imperfect signals.

原文???core.languages.en_GB???
文章編號105967
期刊Optics and Laser Technology
124
DOIs
出版狀態已出版 - 4月 2020

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