期刊
APPLIED PHYSICS LETTERS
卷 94, 期 18, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3132086
关键词
multiwave mixing; optical frequency conversion; optical phase matching; optical waveguides; potassium compounds
资金
- EU FP6 [015848]
- MNiSW [N N202 1489 33]
We report experimental determination of the phase-matching function for type-II three-wave mixing in a periodically poled KTiOPO4 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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