Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
Volume 25, Issue 8, Pages 2095-2101Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAA.25.002095
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Funding
- National University of Singapore [R-397-000-024-112, R-397-000-615-712]
- French Embassy in Singapore [2.06.07]
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In the paraxial Debye regime, simple and power-efficient pupil filters are designed to break the diffraction limit along a large depth of focus (DOF) for the Gaussian beam. Dependences of the superresolution factor, DOF gain, Strehl ratio, sidelobe strength, and axial intensity nonuniformity on the Gaussian profile in the pupil plane are characterized using the numerical method. Optimal filter designs are proposed for either high-resolution or ultra-large-DOF applications followed by experimental verifications. (C) 2008 Optical Society of America.
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