Three-Wave Optical-Mixing Effects in Wedge-Shaped Cells

概要

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The optical-mixing process in which the light at the frequency of 2_<ω1-ω2> is generated from two incident beams at ω1 and ω2 through the polarization of the third order in the electric field, is studied in several kinds of liquid using a sample cell with nonparallel windows. The dependence of the output light intensity at 2_<ω1-ω2> on the optical thickness z and the angle α of parallelism of the cell is obtained. For small α, the output intensity oscillates as z is changed except C_6H_6, in which a different behavior is observed under the same condition. For large α, this oscillatory behavior is observed fairly small. In these experiments, the optical path length z is 10∼15 times as long as the coherence length. The third-order nonlinear susceptibilities have been estimated to be of the order of 10^<-12>∼10^<-14>cm^3erg^<-1>.
社団法人応用物理学会の論文
1967-09-05