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Sub-diffraction resolution of periodic grating structures in a focus engineered sum frequency generation microscope

Title
Sub-diffraction resolution of periodic grating structures in a focus engineered sum frequency generation microscope
Authors
Jyothsna, KMKim, HyunminRaghunathan, Varun
DGIST Authors
Kim, Hyunmin
Issue Date
2019-07-28
Citation
2019 International Conference on Optical MEMS and Nanophotonics, OMN 2019, 74-75
Type
Conference
ISBN
9781728145013
ISSN
2160-5033
Abstract
Use of Toraldo-Type pupil phase masks in a nonlinear sum frequency generation microscope for subdiffraction resolution improvement is simulated. It is found that optimally chosen 0-w phase mask of diameter 64% of the full aperture results in reduction in the nonlinear focal field by 60% of the no phase mask case with 75% of energy concentrated in the central lobe. When imaging periodic grating structures, resonant enhancement and reversal of contrast are observed for grating pitch comparable to the diameter of the side lobes. The resonant contrast enhancement can potentially be used for selectively amplifying certain spatial frequencies in the sample. © 2019 IEEE.
URI
http://hdl.handle.net/20.500.11750/11442
DOI
10.1109/OMN.2019.8925151
Publisher
IEEE Computer Society
Related Researcher
Files:
There are no files associated with this item.
Collection:
Division of Biotechnology2. Conference Papers


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