2015/11/13 by Brigitta Septriani, Septriani, Brigitta, James A. Grieve +5 · 1 citation
Engineering · Physics and Astronomy · #FOS: Physical sciences #Laser Design and Applications #Optics (physics.optics) #Photorefractive and Nonlinear Optics #Quantum Physics (quant-ph) #Solid State Laser Technologies #physics.optics #quant-ph
paper · pdf · doi:10.48550/arxiv.1511.04159
4 pages + 1 supplementary, 3 + 2 figures
arxiv created 2015/11/13 · openalex publication_date 2015/11/13 · arxiv updated 2015/11/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present comprehensive measurement data on the pump and collection beam parameters necessary to achieve high collection efficiency (89.0 ± 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.