Design of adjustable superresolving filters based on birefringent crystals
Applied Optics, Vol. 45, Issue 1, pp. 104-109 (2006)
http://dx.doi.org/10.1364/AO.45.000104
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Abstract
A two-mode adjustable superresolving filter based on a birefringent filter is proposed. This kind of filter has superresolution in two modes of adjustment. One is rotation of the binary pupil filter on the optical axis of the system and the other is the tilt of the filter away from the pupil plane on axis parallel or perpendicular to the optical axis of the crystal. The filters act as complex amplitude filters in the former mode, and as pure phase filters in the latter. By analyzing two superresolving parameters, we obtain the optimal design parameters that ensure a large field of view, a large superresolving range, and a high setting accuracy. This kind of filter can provide more flexibility in practical applications.
© 2006 Optical Society of America
OCIS Codes
(100.6640) Image processing : Superresolution
(120.2440) Instrumentation, measurement, and metrology : Filters
(230.6120) Optical devices : Spatial light modulators
(260.1440) Physical optics : Birefringence
ToC Category:
Diffractive Optics
Citation
Huafeng Zhu, Huijing Gan, Hongyi Gao, Jianwen Chen, and Zhizhan Xu, "Design of adjustable superresolving filters based on birefringent crystals," Appl. Opt. 45, 104-109 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-1-104
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