Abstract
We experimentally demonstrate a method for creating broad bandwidth photon pairs in the visible spectral region, centered at a frequency that is higher than that of the initial pump source. Spontaneous down conversion of a narrowband 1053 nm pulsed Nd:YLF laser is followed by highly efficient upconversion in adiabatic nonlinear frequency-conversion process. Photon pairs are generated from 693 to 708 nm, and the complete conversion process occurs within a single monolithic 5-cm-long stoichiometric lithium tantalate nonlinear crystal. We have characterized the dependence of this structure with respect to pump intensity and crystal temperature.
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This work was financially supported by the Israel Science Foundation through Grants 1310/13, the ERC grant QUAMI, the ERC Grant MIRAGE 20-15 and the Crown Photonics Center.
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Suchowski, H., Bruner, B.D., Israel, Y. et al. Broadband photon pair generation at 3ω/2. Appl. Phys. B 122, 25 (2016). https://doi.org/10.1007/s00340-015-6304-9
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DOI: https://doi.org/10.1007/s00340-015-6304-9