ua nt - p h / 03 07 09 4 v 1 1 4 Ju l 2 00 3 Experimental limit on Spontaneous Parametric Up Conversion
نویسندگان
چکیده
We present a first experimental test of the existence of Spontaneus Para-metric Up Conversion predicted in Ref. [3]. The measurement has been made using a ccd camera on the emission of a LiIO 3 crystal pumped by a 351 nm and/or a 789 nm lasers. We obtain an upper limit of 160 times on the ratio between intensity of Spontaneus Parametric Up Conversion and Spontaneous Parametric Down conversion.
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