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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 16 — Aug. 15, 2014
  • pp: 4843–4846

Mid-infrared digital holography and holographic interferometry with a tunable quantum cascade laser

M. Ravaro, M. Locatelli, E. Pugliese, I. Di Leo, M. Siciliani de Cumis, F. D’Amato, P. Poggi, L. Consolino, R. Meucci, P. Ferraro, and P. De Natale  »View Author Affiliations


Optics Letters, Vol. 39, Issue 16, pp. 4843-4846 (2014)
http://dx.doi.org/10.1364/OL.39.004843


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Abstract

Mid-infrared digital holography based on CO2 lasers has proven to be a powerful coherent imaging technique due to reduced sensitivity to mechanical vibrations, increased field of view, high optical power, and possible vision through scattering media, e.g., smoke. Here we demonstrate a similar and more compact holographic system based on an external cavity quantum cascade laser emitting at 8 μm. Such a setup, which includes a highly sensitive microbolometric camera, allows the acquisition of speckle holograms of scattering objects, which can be processed in real time. In addition, by exploiting the broad laser tunability, we can acquire holograms at different wavelengths, from which we extract phase images not subjected to phase wrapping, at synthetic wavelengths ranging from hundreds of micrometers to several millimeters.

© 2014 Optical Society of America

OCIS Codes
(090.2880) Holography : Holographic interferometry
(090.1995) Holography : Digital holography
(140.5965) Lasers and laser optics : Semiconductor lasers, quantum cascade

ToC Category:
Holography

History
Original Manuscript: June 12, 2014
Manuscript Accepted: June 26, 2014
Published: August 13, 2014

Citation
M. Ravaro, M. Locatelli, E. Pugliese, I. Di Leo, M. Siciliani de Cumis, F. D’Amato, P. Poggi, L. Consolino, R. Meucci, P. Ferraro, and P. De Natale, "Mid-infrared digital holography and holographic interferometry with a tunable quantum cascade laser," Opt. Lett. 39, 4843-4846 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-16-4843

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