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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 8 — Apr. 18, 2005
  • pp: 2835–2842

High efficient superresolution combination filter with twin LCD spatial light modulators

Phanindra Narayan Gundu, Erwin Hack, and Pramod Rastogi  »View Author Affiliations

Optics Express, Vol. 13, Issue 8, pp. 2835-2842 (2005)

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A comparative study of pupil filters for transverse superresolution is presented in this article. We propose to combine the advantages of amplitude and phase filters in one complex filter that performs better than either phase or amplitude filters designed so far. The performance here refers to having a smaller spot size along with higher peak to side lobe intensity ratio. Using numerical simulation the limitations of phase and amplitude filters are assessed. The experimental verification of the designed combination filter is performed with two LCD spatial light modulators used for displaying separately the phase and amplitude part of the filter. Results obtained from this setup confirm the simulation.

© 2005 Optical Society of America

OCIS Codes
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(230.3720) Optical devices : Liquid-crystal devices
(350.5730) Other areas of optics : Resolution

ToC Category:
Research Papers

Original Manuscript: March 10, 2005
Revised Manuscript: March 29, 2005
Published: April 18, 2005

Phanindra Gundu, Erwin Hack, and Pramod Rastogi, "High efficient superresolution combination filter with twin LCD spatial light modulators," Opt. Express 13, 2835-2842 (2005)

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