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NONLINEAR OPTICAL MATERIALS: NONLINEAR REFLECTION IN COMPOUNDS WITH LARGE PERMANENT DIPOLE MOMENTS

G. B. Hadjichristov1,* , N. Kirov1

Affiliation

  1. Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria

Abstract

We have analyzed the possibility of enhancing the nonlinear reflection of coherent optical waves in materials with large permanent dipole moments, e.g. some conjugated organic compounds. The theoretical results indicate that phase-conjugate reflection in modified four wave mixing ω = ω + ω - ω is enhanced by up to several orders of magnitude, if proper two photon resonances at 2ω are achieved in such nonlinear optical media. This effect mainly depends on the difference between the permanent dipole moments of the molecular states involved in the relevant nonlinear process..

Keywords

Nonlinear optical materials, Optical four-wave mixing, Phase conjugation, Permanent dipole moments.

Submitted at: Dec. 9, 2004
Accepted at: Jan. 26, 2005

Citation

G. B. Hadjichristov, N. Kirov, NONLINEAR OPTICAL MATERIALS: NONLINEAR REFLECTION IN COMPOUNDS WITH LARGE PERMANENT DIPOLE MOMENTS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 1, pp. 561-564 (2005)