Open AccessHigh-resolution multi-wavelength lensless diffraction imaging with adaptive dispersion correction
Author(s) -
Yuanyuan Liu,
Qingwen Liu,
You Li,
Bingxin Xu,
Junyong Zhang,
Zuyuan He
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.419128
Subject(s) - optics , coherent diffraction imaging , diffraction , wavelength , phase retrieval , chromatic aberration , dispersion (optics) , computer science , adaptive optics , bandwidth (computing) , physics , chromatic scale , telecommunications , fourier transform , quantum mechanics
Multi-wavelength imaging diffraction system is a promising phase imaging technology due to its advantages of no mechanical movement and low complexity. In a multi-wavelength focused system, spectral bandwidth and dispersion correction are critical for high resolution reconstruction. Here, an optical setup for the multi-wavelength lensless diffraction imaging system with adaptive dispersion correction is proposed. Three beams with different wavelengths are adopted to illuminate the test object, and then the diffraction patterns are recorded by a image sensor. The chromatic correction is successfully realized by a robust refocusing technique. High-resolution images can be finally retrieved through phase retrieval algorithm. The effectiveness and reliability of our method is demonstrated in numerical simulation and experiments. The proposed method has the potential to be an alternative technology for quantitative biological imaging.