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Opt Lett. 2004 Oct 15;29(20):2429-31.

Enhancing the axial resolution of quantum optical coherence tomography by chirped quasi-phase matching.

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  • 1ICFO-Institut de Ciencies Fotoniques and Department of Signal Theory and Communications, Universitat Politecnica de Catalunya, Barcelona, Spain.


We show theoretically that a chirped quasi-phase-matching nonlinear crystal structure can significantly enhance the axial resolution in quantum optical coherence tomography by increasing the spectral width of the generated entangled photon pairs. For pulsed pumps we show how the pump-pulse duration affects the maximum resolution attainable.

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