Highly-sensitive adaptive interferometer for ultrasound detection

Alexei A. Kamshilin; Erik Raita; A. I. Grachev

doi:10.1117/12.524869

19 November 2003 Highly-sensitive adaptive interferometer for ultrasound detection

Alexei A. Kamshilin, Erik Raita, A. I. Grachev

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.524869
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

We present a novel phase demodulation technique in which two speckled waves with different polarization states are coupled in a photorefractive crystal subjected to application of a fast-oscillating ac-electric field. It is shown that the sensitivity of an interferometer with a Bi₁₂TiO₂₀ crystal based on this technique is only 1.5 times worse than the classical homodyne detection limit. To the best of our knowledge, this is the most sensitive adaptive photorefractive interferometer ever reported.

Citation Download Citation

Alexei A. Kamshilin, Erik Raita, and A. I. Grachev "Highly-sensitive adaptive interferometer for ultrasound detection", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.524869

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