Polarization directions of noncollinear phase-matched optical parametric downconversion output

A. Migdall
1997 Journal of the Optical Society of America. B, Optical physics  
An analysis of the output polarization of a noncollinear type I optical parametric downconversion source is presented. Such a source can be made by pumping a nonlinear crystal with an extraordinary-polarized beam to produce pairs of ordinary-polarized photons. A polarization map of the output light illustrates dramatic variation in the polarization direction at large scattering angles. The effect of this variation in polarization direction is seen on a map of the nonlinear conversion
more » ... nversion efficiency. The apparent ambiguity in the polarization for the particular case in which one of the outputs propagates along the crystal optic axis is also discussed.
doi:10.1364/josab.14.001093 fatcat:rvjrihjssvgarkciqtye7rsdai