Digital three-color holographic interferometry for flow analysis Jean-Michel Desse 1* , Pascal Picart 2,3 , Patrice Tankam 2 1 Office National d’Etudes et Recherches Aérospatiales, 5, Boulevard Paul Painlevé, 59045, LILLE, France 2 LAUM, CNRS, Université du Maine, Av. O. Messiaen, 72085 LE MANS, France 3 ENSIM-Ecole Nationale Supérieure d’Ingénieurs du Mans, Université du Maine, rue Aristote, 72085 LE MANS, France *Corresponding author: Jean-Michel.Desse@onera.fr Abstract: A digital three-color holographic interferometer was designed to analyze the variations in refractive index induced by a candle flame. Color holograms are generated and recorded with a three layer photodiode stack sensor allowing a simultaneous recording with a high spatial resolution. Phase maps are calculated using Fourier transform and spectral filtering is applied to eliminate parasitic diffraction orders. Then, the contribution along each color is obtained with the simultaneous three wavelength measurement. Results in the case of the candle flame are presented. Zero order fringe, meaning zero optical path difference, can be easily extracted from the experimental data, either by considering a modeled colored fringe pattern or the wrapped phases along the three wavelengths. ©2008 Optical Society of America OCIS codes: (090.1760) Computer holography; (090.1995) Digital holographic; (090.2880) Holographic interferometry; (090.1995) Digital holography; (110.3010) Image reconstruction techniques References and links 1. P. Picart, J. Leval, D. Mounier, and S. Gougeon, "Time-averaged digital holography," Opt. Lett. 28, 1900- 1902 (2003). 2. J. Leval, P. Picart, J.-P. Boileau and J.-C. Pascal, “Full field vibrometry with digital Fresnel holography,” Appl. Opt. 44, 5763-5772 (2005). 3. P. Picart, J. Leval, J. C. Pascal, J. P. Boileau, M. Grill, J. M. Breteau, B. Gautier, and S. Gillet, "2D full field vibration analysis with multiplexed digital holograms," Opt. Express 13, 8882-8892 (2005). 4. P. Picart, B. Diouf, E. Lolive and J.-M. Berthelot, “Investigation of fracture mechanisms in resin concrete using spatially multiplexed digital Fresnel holograms,” Opt. Eng. 43, 1169-1176 (2004). 5. G. Pedrini, W. Osten, and M.E. Gusev, “High-speed digital holographic interferometry for vibration measurement,” Appl. Opt. 45, 3456-3462 (2006). 6. C. Pérez-López, M.H. De la Torre-Ibarra, and F.M. Santoyo, “Very high speed cw digital holographic interferometry,” Opt. Express 14, 9709-9715 (2006). 7. P. Picart, J. Leval, F. Piquet, J.-P. Boileau, Th. Guimezanes and J.-P. Dalmont, “Tracking high amplitude auto-oscillations with digital Fresnel holograms,’’ Opt. Express 15, 8263-8274 (2007). 8. J. M. Desse, F. Albe, and J.L. Tribillon, “Real-time color holographic interferometry devoted to 2D unsteady wake flows,” J. Visualization 7, 217-224 (2004). 9. T. H. Jeong, H. I. Bjelkhagen, and Louis M. Spoto, “Holographic interferometry with multiple wavelengths,” Appl. Opt. 36, 3686-3688 (1997). 10. I. Yamaguchi, T. Matsumura, and J. Kato, “Phase-shifting color digital holography,” Opt. Lett. 27, 1108- 1110 (2002). 11. N. Demoli, D. Vukicevic, and M. Torzynski, “Dynamic digital holographic interferometry with three wavelengths,” Opt. Express 11, 767-774 (2003). 12. N. Demoli, J. Mestrovic, and I. Sovic, “Subtraction digital holography,” Appl. Opt. 42, 798-804 (2003). 13. J.M. Desse, F. Albe, and J.L. Tribillon, “Color transmission and reflection holographic interferometry applied to fluids mechanics,” J. Holo. Speckle (to be published). 14. J.M. Desse, “Recording and processing of interferograms by spectral characterization of the interferometric setup,” Exp. Fluids 23, 265-271 (1997) #88737 - $15.00 USD Received 17 Oct 2007; revised 13 Dec 2007; accepted 18 Dec 2007; published 4 Apr 2008 (C) 2008 OSA 14 April 2008 / Vol. 16, No. 8 / OPTICS EXPRESS 5471