Dispersion Measurement Method with Down Conversion Process
Journal of physics communications(2018)
摘要
Proper characterization of nonlinear crystals is essential for designing single photon sources. We show a technique for dispersion characterization of a nonlinear material by making use of phase matching in the process of parametric down conversion. Our method is demonstrated on an exemplary periodically poled potassium titanyl phosphate KTiOPO_4 crystal phase-matched for 396 nm to 532 nm and 1550 nm. We show a procedure to characterize the dispersion in the range of 390 to 1800 nm by means of only one spectrometer for the UV-visible range.
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关键词
spontanous parametric down-conversion,dispersion measurement,second order nonlinear optical processes,single photon sources
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