Open AccessInterferometric measurement of complex-field changes in transient detection imaging
Author(s) -
A. Esteban-Martín,
Javier García-Monreal,
Fernando Silva,
Germán J. de Valcárcel
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.401077
Subject(s) - interferometry , optics , transient (computer programming) , calibration , sensitivity (control systems) , phase (matter) , phase retrieval , nonlinear system , amplitude , sign (mathematics) , physics , field (mathematics) , computer science , fourier transform , electronic engineering , mathematical analysis , mathematics , quantum mechanics , pure mathematics , engineering , operating system
We report an experimental method that combines nonlinear-crystal-based transient detection imaging (TDI) with interferometric complex-field retrieval. The system allows measuring both phase and amplitude of a dynamic scene while suppressing stationary background. Theoretical and experimental results prove the linear relation existing between input and output phases, as well as the benefits of phase analysis for both detection and measurement with high resolutions of λ/30, even under noisy conditions. Additionally, we present experimental evidence of the remarkable ability of the technique to detect phase sign changes in the scene -what we call differential-phase TDI- showing great detection sensitivity and no calibration requirements.