Characterization of parametric down-conversion in periodically poled KTP crystals with a picosecond pump

S. Cigdem Yorulmaz; Michiel J. A. de Dood

doi:10.1117/12.922385

4 May 2012 Characterization of parametric down-conversion in periodically poled KTP crystals with a picosecond pump

S. Cigdem Yorulmaz, Michiel J. A. de Dood

Proceedings Volume 8440, Quantum Optics II; 84400G (2012) https://doi.org/10.1117/12.922385
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

We experimentally characterize sources of frequency degenerate down-converted photons at 826.4 nm generated in 2 mm, 5 mm and 10 mm long periodically-poled KTP crystals. The crystals are pumped by 413.2 nm laser pulses with 2 ps duration. The dispersion D=1.3 ps/mm puts a limit to the length over which phase matching is efficient for a 2 ps pulse and provides a lower limit for the angular width of SPDC in the far-field. We investigate the far-field distribution of SPDC produced by periodically-poled KTP crystals and compare this with the calculated intensity distribution and find good agreement with theory. We also discuss the performance of PPKTP in terms of nonlinearity and group velocity walk-off compared to other available materials.

Citation Download Citation

S. Cigdem Yorulmaz and Michiel J. A. de Dood "Characterization of parametric down-conversion in periodically poled KTP crystals with a picosecond pump", Proc. SPIE 8440, Quantum Optics II, 84400G (4 May 2012); https://doi.org/10.1117/12.922385

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