期刊
APPLIED OPTICS
卷 55, 期 26, 页码 7287-7293出版社
OPTICAL SOC AMER
DOI: 10.1364/AO.55.007287
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资金
- National Natural Science Foundation of China (NSFC) [61127011, 61405164]
- Fundamental Research Funds for the Central Universities [3102014KYJD025, 3102014JCQ01102]
A dual-wavelength common-path digital holographic microscopy based on a single parallel glass plate is presented to achieve quantitative phase imaging, which combines the dual-wavelength technique with lateral shearing interferometry. Two illumination laser beams with different wavelengths (lambda(1) = 532 nm and lambda(2) = 632.8 nm) are reflected by the front and back surfaces of the parallel glass plate to create the lateral shear and form the digital hologram, and then the hologram is reconstructed to obtain the phase distribution with a synthetic wavelength Lambda = 3339.8 nm. The experimental configuration is very compact, with the advantages of vibration resistance and measurement range extension. The experimental results of the laser-ablated pit, groove, and staircase specimens show the feasibility of the proposed configuration. (C) 2016 Optical Society of America
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