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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 8 — Jul. 30, 2009

Swept-source digital holography to reconstruct tomographic images

Gyanendra Sheoran, Satish Dubey, Arun Anand, Dalip Singh Mehta, and Chandra Shakher  »View Author Affiliations


Optics Letters, Vol. 34, Issue 12, pp. 1879-1881 (2009)
http://dx.doi.org/10.1364/OL.34.001879


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Abstract

We present what we believe to be a new method of swept-source digital holography using a superluminescent diode (SLD) as a broadband light source and an acousto-optic tunable filter (AOTF) as a frequency tunable device. The swept source consists of an SLD as a broadband source in conjunction with the AOTF as the frequency tuning device in the wavelength range of 800–870 nm. Since the AOTF is an electronically controlled device, frequency tuning can be achieved without mechanical movement . The angular spectrum approach to the scalar diffraction theory is used to reconstruct the images for each wavelength. Applications of a broadband source ensure an increased axial resolution of reconstructed images. The proposed swept-source system provides a sufficiently broad range of tunability and can increase the axial range and the resolution of reconstructed tomographic images using digital holography. The system was tested using a semireflecting glass substrate; a character “B” is written on it with black ink. Experimental results are presented.

© 2009 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(110.4500) Imaging systems : Optical coherence tomography
(110.6960) Imaging systems : Tomography
(090.1995) Holography : Digital holography

ToC Category:
Holography

History
Original Manuscript: March 4, 2009
Revised Manuscript: May 3, 2009
Manuscript Accepted: May 13, 2009
Published: June 11, 2009

Virtual Issues
Vol. 4, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Gyanendra Sheoran, Satish Dubey, Arun Anand, Dalip Singh Mehta, and Chandra Shakher, "Swept-source digital holography to reconstruct tomographic images," Opt. Lett. 34, 1879-1881 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-34-12-1879

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