Field-induced frequency doubling

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The field-induced frequency doubling (electric-field-induced second-harmonic generation, EFISH) is a method for measuring the hyperpolarizability of organic molecules . The systems examined are centrosymmetric in their ground state . The non-centrosymmetry for the nonlinear properties is created by applying an external electric field with direct current. The application of the field is synchronized with the laser pulse , whose frequency doubling is measured.

All centrosymmetric phases can be examined with this method: gases, liquids / solutions and centrosymmetric crystals.

literature

  • DS Chemla, J. Zyss: Nonlinear Optical Properties of Organic Molecules and Crystals, Volume 1 . Academic Press, Orlando 1987, ISBN 0-12-170611-7 , pp. 49-51 (English).

Individual evidence

  1. ↑ G. Hauchecorne, F. Kerhervé, G. Mayer: Mesure des interactions entre ondes lumineuses in diverse substances . In: Journal de Physique (France) . tape 32 , no. 1 , 1971, p. 47-62 , doi : 10.1051 / jphys: 0197100320104700 ( archives-ouvertes.fr [PDF]).
  2. ^ BF Levine, CG Bethea: Second and third order hyperpolarizabilities of organic molecules . In: The Journal of Chemical Physics . tape 63 , no. 6 , 1975, p. 2666-2682 , doi : 10.1063 / 1.431660 .
  3. ↑ RM Hochstrasser: Electric field effects on oriented molecules and molecular crystals . In: Accounts of Chemical Research . tape 6 , no. 8 , 1973, p. 263-269 , doi : 10.1021 / ar50068a002 .