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arXiv:2009.11396 · Applied Physics B

Azimuthal eigenmodes at strongly non-degenerate parametric down-conversion

L. S. Dvernik, P. A. Prudkovskii

Published May 16, 2021• 3 citations
arXivHTMLPDF
DOI
10.1007/s00340-021-07634-5

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The angular structure of an optical-terahertz biphoton field generated by strongly non-degenerate parametric down-conversion is studied theoretically. Azimuthal eigenmodes of scattered radiation are found, in the basis of which the nonlinear interaction operator has a diagonal form. The solution of the evolution equations for these eigenmodes allows us to find a scattering matrix describing the intensity and correlation properties of nonclassical optical-terahertz scattered radiation at arbitrary parametric gain and at different frequencies of the idler terahertz wave.