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, R. Ricci

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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.
Original languageEnglish
Pages (from-to)1402 - 1404
Number of pages3
JournalOptics Letters
Volume32
Issue number11
DOIs
Publication statusPublished - 1 Jun 2007
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Bartolini, L., De Dominicis, L., Fornetti, G., Francucci, M., Guarneri, M., Poggi, C., & Ricci, R. (2007). Improvement in underwater phase measurement of an amplitude-modulated laser beam by polarimetric techniques. Optics Letters, 32(11), 1402 - 1404. https://doi.org/10.1364/OL.32.001402