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Proceedings Article

Image reconstruction using measurements in volume speckle fields formed by different wavelengths

[+] Author Affiliations
Nikolay V. Petrov, Andrei A. Gorodetsky, Victor G. Bespalov

St. Petersburg State Univ. of Information Technology (Russian Federation)

Mikhail V. Volkov

St. Petersburg State Univ. (Russian Federation)

Proc. SPIE 7907, Biomedical Applications of Light Scattering V, 790718 (February 11, 2011); doi:10.1117/12.876151
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From Conference Volume 7907

  • Biomedical Applications of Light Scattering V
  • Adam P. Wax; Vadim Backman
  • San Francisco, California, USA | January 22, 2011

abstract

An iterative wavefront retrieval method based on intensity measurements formed by several wavelengths is investigated in the present contribution. This multiwavelength technique is extended to use the intensity distributions recorded in various planes of the volume speckle field. The ability to retrieve the wavefront using speckle patterns is demonstrated in experiment. Two different experimental techniques have been used. The first proposed method allows one to record three different intensity distributions corresponding to the three CCD RGB channels at single exposure. This gives the advantage in the analysis of fast processes, e.g. phase microscopy of moving biological cell-like objects investigation. The second technique involves using a large number of wavelengths of supercontinuum radiation formed by photonic-crystal fiber. This approach provides faster and more accurate convergence of the proposed method, has simple and rugged recording scheme with fiber optic elements.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Nikolay V. Petrov ; Mikhail V. Volkov ; Andrei A. Gorodetsky and Victor G. Bespalov
"Image reconstruction using measurements in volume speckle fields formed by different wavelengths", Proc. SPIE 7907, Biomedical Applications of Light Scattering V, 790718 (February 11, 2011); doi:10.1117/12.876151; http://dx.doi.org/10.1117/12.876151


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