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arXiv · 1511.04159

The thick-crystal regime in photon pair sources

Brigitta Septriani·James A. Grieve·Kadir Durak·Alexander Ling
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Abstract

We present comprehensive measurement data on the pump and collection beam parameters necessary to achieve high collection efficiency ($89.0 \pm 1.7 \%$) together with high brightness when a single $β$-Barium Borate crystal is operated in the thick-crystal regime and pumped with a narrow linewidth laser source. Spectral analysis of the collinear, non-degenerate photons suggest that the effective interaction length within the crystal is dominated by the collection beam mode and the use of longer crystals with increased spatial walk-off does not necessarily lead to a reduced collection efficiency. This result is an important consideration for optical designers who seek to develop practical photon pair sources.

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Brigitta Septriani, James A. Grieve, Kadir Durak, Alexander Ling. 2015-11-13. The thick-crystal regime in photon pair sources. https://arxiv.org/abs/1511.04159

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