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Journal Article

Broadband bright twin beams and their upconversion

MPS-Authors
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Chekhova,  Maria
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs,  Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Chekhova, M., Germanskiy, S., Horoshko, D., Kitaeva, G., Kolobov, M., Leuchs, G., et al. (2018). Broadband bright twin beams and their upconversion. Optics Letters, 43(3), 375-378. doi:10.1364/OL.43.000375.


Cite as: https://hdl.handle.net/21.11116/0000-0002-187E-7
Abstract
We report on the observation of broadband (40 THz) bright twin beams through high-gain parametric downconversion in an aperiodically poled lithium niobate crystal. The output photon number is shown to scale exponentially with the pump power and not with the pump amplitude, as in homogeneous crystals. Photon number correlations and the number of frequency/temporal modes are assessed by spectral covariance measurements. By using sum-frequency generation on the surface of a non-phase-matched crystal, we measure a cross-correlation peak with the temporal width of 90 fs.