Experimental characterization of three-wave mixing in a multimode nonlinear KTiOPO_4 waveguide

Details Experimental characterization of three-wave mixing in a multimode nonlinear KTiOPO_4 waveguide Experimental characterization of three-wave mixing in a multimode nonlinear KTiOPO_4 waveguide

2009-04-29

arxiv.org/abs/0904.4577v2

Appl. Phys. Lett. 94, 181105 (2009)

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1063/1.3132086

We report experimental determination of the phase-matching function for type-II three-wave mixing in a periodically poled KTiOPO_4 waveguide in the 792-815 nm spectral region. The measurement was performed by sum-frequency generation of spectrally tuned fundamental components. Strong dependence of the observed signal on the excited spatial modes in the waveguide has been observed and fully interpreted. These results indicate a route to employ the waveguide for spontaneous parametric down-conversion producing photon pairs in well-defined spatial modes.

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