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Proceedings Paper

Phase retrieval method for multiple wavelength speckle patterns
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Paper Abstract

We present a wavefront retrieval method for radiation comprising several wavelengths. Both numerical models and experimental results are presented. Numerical modeling implies iterative phase retrieval procedure for all wavelengths in spectrum. For reconstruction we can use two different algorithms, one inherits from one proposed by Osten, Pedrini and Almoro, the second one implies expansion by Hermite-Gauss or Laguerre-Gauss basis set which allows to decrease calculation time consumption. In experiment, speckle patterns can be formed either by spectral supercontinuum radiation from photonic-crystal fiber (PCF) or by Stokes components of stimulated Raman scattering (SRS) from second harmonic of pulse Nd:YAG laser radiation in barium nitrate crystal.

Paper Details

Date Published: 13 September 2010
PDF: 7 pages
Proc. SPIE 7387, Speckle 2010: Optical Metrology, 73871T (13 September 2010); doi: 10.1117/12.871433
Show Author Affiliations
Nickolay V. Petrov, Saint-Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Victor G. Bespalov, Saint-Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Andrei A. Gorodetsky, Saint-Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russian Federation)


Published in SPIE Proceedings Vol. 7387:
Speckle 2010: Optical Metrology
Armando Albertazzi Goncalves Jr.; Guillermo H. Kaufmann, Editor(s)

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