Compressed-sensing wavenumber-scanning interferometry

摘要

Highlights ? A compressed sensing theory is proposed to evaluate DRWSI data. ? The method performs well when laser's output scans nonlinearly and with mode-hop. ? The method refines the depth resolution and phase measurement accuracy. ? The method does not require prior knowledge of the measured object. Abstract The Fourier transform (FT), the nonlinear least-squares algorithm (NLSA), and eigenvalue decomposition algorithm (EDA) are used to evaluate the phase field in depth-resolved wavenumber-scanning