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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 11 — Jun. 1, 2007
  • pp: 1402–1404

Improvement in underwater phase measurement of an amplitude-modulated laser beam by polarimetric techniques

L. Bartolini, L. De Dominicis, G. Fornetti, M. Francucci, M. Guarneri, C. Poggi, and R. Ricci  »View Author Affiliations


Optics Letters, Vol. 32, Issue 11, pp. 1402-1404 (2007)
http://dx.doi.org/10.1364/OL.32.001402


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Abstract

The phase of the amplitude-modulated radiation reflected by a Lambertian target immersed in water was measured by using a linearly and circularly polarized sounding laser beam. Different values of the water extinction coefficient in the range of 0.06 2 m 1 were realized by adding skim milk as a scattering element. It is shown that very efficient rejection of optical noise, resulting in reliable phase measurements, is accomplished with a cross-polarized and copolarized detection scheme for linear and circular polarization, respectively. The experiment demonstrates that phase measurements are very sensitive to optical noise suppression and that, as far as single scattering is the main involved mechanism, significant improvements can be achieved by adopting a polarization control on both the transmitter and the receiver stages of the apparatus.

© 2007 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.4280) Imaging systems : Noise in imaging systems
(280.3420) Remote sensing and sensors : Laser sensors

ToC Category:
Imaging Systems

History
Original Manuscript: January 10, 2007
Revised Manuscript: March 13, 2007
Manuscript Accepted: March 18, 2007
Published: April 26, 2007

Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics

Citation
L. Bartolini, L. De Dominicis, G. Fornetti, M. Francucci, M. Guarneri, C. Poggi, and R. Ricci, "Improvement in underwater phase measurement of an amplitude-modulated laser beam by polarimetric techniques," Opt. Lett. 32, 1402-1404 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-11-1402


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