10 January 2018 Radial super-resolution in digital holographic microscopy using structured illumination with circular symmetry
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Abstract
A method to improve the radial resolution using special structured light is proposed in the field of digital holographic microscopy (DHM). A specimen is illuminated with circular symmetrical structured light that makes the spectrum have radial movement, so that high frequency components of the specimen are moved into the passband of the receiver to overcome the diffraction limit. In the DHM imaging system, Computer Generated Hologram (CGH) technology is used to generate the required structured light grating. Then the grating is loaded into a spatial light modulator (SLM) to obtain specific structured illumination. After recording the hologram, digital reconstruction, for the microstructure of a binary optical element that needs to observe radial distribution, the radial resolution of the specimen is improved experimentally compare it with the result of one-dimensional sinusoidal structured light imaging. And a method of designing structured light is presented.
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Yujian Yin, Ping Su, Jianshe Ma, "Radial super-resolution in digital holographic microscopy using structured illumination with circular symmetry", Proc. SPIE 10616, 2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 1061603 (10 January 2018); doi: 10.1117/12.2296384; https://doi.org/10.1117/12.2296384
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