Optical coherence tomography with a nonlinear interferometer in the high 
parametric gain regime

Machado, Gerard J.; Frascella, Gaetano; Torres, Juan P.; Chekhova, Maria V.

doi:10.1063/5.0016259

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Optical coherence tomography with a nonlinear interferometer in the high parametric gain regime

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Frascella, Gaetano
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
University of Erlangen-Nuremberg;

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Chekhova, Maria V.
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
University of Erlangen-Nuremberg;

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Citation

Machado, G. J., Frascella, G., Torres, J. P., & Chekhova, M. V. (in press). Optical coherence tomography with a nonlinear interferometer in the high parametric gain regime. Applied Physics Letters. doi:10.1063/5.0016259.

Cite as: https://hdl.handle.net/21.11116/0000-0006-FB90-C

Abstract

We demonstrate optical coherence tomography based on an SU(1,1) nonlinear interferometer with high-gain parametric downconversion. For imaging and sensing applications, this scheme promises to outperform previous experiments working at low parametric gain, since higher photon fluxes provide lower integration times for obtaining high-quality images. In this way, one can avoid using single-photon detectors or CCD cameras with very high sensitivities, and standard spectrometers can be used instead. Other advantages are higher sensitivity to small loss and amplification before detection so that the detected light power considerably exceeds the probing one.