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Proceedings Paper

Generation of broadband spontaneous parametric fluorescence and its application to quantum optical coherence tomography
Author(s): Masayuki Okano; Ryo Okamoto; Akira Tanaka; Shanthi Subashchandran; Shutaro Ishida; Norihiko Nishizawa; Shigeki Takeuchi
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Paper Abstract

Optical coherence tomography (OCT) based on Michelson interferometer has widely been utilized in biology and medicine as a type of optical biopsy and quantum optical coherence tomography (QOCT) based on Hong-Ou-Mandel interferometer has recently been demonstrated. By use of quantum entangled photon pairs generated via spontaneous parametric down conversion (SPDC) process, axial resolution of QOCT can be better than that of OCT in principle for a source of same bandwidth and group velocity dispersion (GVD) effect for QOCT can be automatically cancelled thanks to the frequency correlation of entangled photon pairs. To realize high-resolution QOCT, we need a broadband quantum entangled photon pair source. Then we proposed a novel conventional method to generate broadband spontaneous parametric fluorescence via SPDC by using multiple nonlinear crystals pumped by a CW laser. Our method has controllability to tune the center frequency of generated photons and scalability to extend the number of crystals. This conventional method can enable us to achieve sub-micron axial resolution of QOCT.

Paper Details

Date Published: 6 September 2011
PDF: 6 pages
Proc. SPIE 8163, Quantum Communications and Quantum Imaging IX, 816312 (6 September 2011);
Show Author Affiliations
Masayuki Okano, Osaka Univ. (Japan)
Hokkaido Univ. (Japan)
Ryo Okamoto, Osaka Univ. (Japan)
Hokkaido Univ. (Japan)
Akira Tanaka, Osaka Univ. (Japan)
Hokkaido Univ. (Japan)
Shanthi Subashchandran, Osaka Univ. (Japan)
Hokkaido Univ. (Japan)
Shutaro Ishida, Nagoya Univ. (Japan)
Norihiko Nishizawa, Nagoya Univ. (Japan)
Shigeki Takeuchi, Osaka Univ. (Japan)
Hokkaido Univ. (Japan)

Published in SPIE Proceedings Vol. 8163:
Quantum Communications and Quantum Imaging IX
Ronald E. Meyers; Yanhua Shih; Keith S. Deacon, Editor(s)

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