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Journal articles
Co-axis digital holography based on sinusoidal phase modulation using generalized lock-in detection
Abstract : Sinusoidal phase modulating (SPM) interferometers are used to precisely measure complex light fields with simple interferometric setups. Recently, a generalized lock-in technique has been proposed for optimizing the signal extraction in phase-modulated interferometers. This article shows its applicability in digital holography as well as digital holographic interferometry. A compact homemade setup based on the Michelson interferometer was used to observe the scattering sample surface with a spatial resolution of 32 LP/mm; out-of-plane rotation was measured with a theoretical detection limit of 0.004°. The comparison between the generalized lock-in detection and traditional SPM interferometer method was done theoretically and experimentally.
https://hal-utt.archives-ouvertes.fr/hal-02276289
Contributor : Jean-Baptiste Vu Van Connect in order to contact the contributor
Submitted on : Monday, September 2, 2019 - 2:44:35 PM
Last modification on : Wednesday, September 15, 2021 - 3:09:39 PM
Contributor : Jean-Baptiste Vu Van Connect in order to contact the contributor
Submitted on : Monday, September 2, 2019 - 2:44:35 PM
Last modification on : Wednesday, September 15, 2021 - 3:09:39 PM