Compensation of chromatic aberration in multiwavelength digital holographic investigation of microstructures

P. Ferraro; S. Grilli; D. Alfieri; S. De Nicola; A. Finizio; G. Pierattini

doi:10.1117/12.683858

14 August 2006 Compensation of chromatic aberration in multiwavelength digital holographic investigation of microstructures

P. Ferraro, S. Grilli, D. Alfieri, S. De Nicola, A. Finizio, G. Pierattini

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Proceedings Volume 6293, Interferometry XIII: Applications; 629304 (2006) https://doi.org/10.1117/12.683858
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

We demonstrate that refractive index profile of microstructure could be correctly recovered in multiwavelenght digital holographic microscope when chromatic aberration is taken into account. The chromatic aberration introduced by the optical imaging components can be can be numerically compensated in the reconstruction process. The compensation approach requires the control of the reconstructed pixel size in the image plane if a Fresnel Transformation Method is adopted to take into account the different wavelengths used to investigate the samples. Description of the method and several examples of application will be discussed.

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P. Ferraro, S. Grilli, D. Alfieri, S. De Nicola, A. Finizio, and G. Pierattini "Compensation of chromatic aberration in multiwavelength digital holographic investigation of microstructures", Proc. SPIE 6293, Interferometry XIII: Applications, 629304 (14 August 2006); https://doi.org/10.1117/12.683858

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KEYWORDS

Holograms

Digital holography

3D image reconstruction

Chromatic aberrations

Holography

Holographic interferometry

Microscopes

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