Phase-matched second-harmonic generation in waveguides of polymeric Langmuir-Blodgett films

Koen J. Clays; Thomas L. Penner; Nancy J. Armstrong; Douglas R. Robello

doi:10.1117/12.139211

25 February 1993 Phase-matched second-harmonic generation in waveguides of polymeric Langmuir-Blodgett films

Koen J. Clays, Thomas L. Penner, Nancy J. Armstrong, Douglas R. Robello

Proceedings Volume 1775, Nonlinear Optical Properties of Organic Materials V; (1993) https://doi.org/10.1117/12.139211
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

Langmuir-Blodgett (LB) films have been fabricated from a preformed acrylate amphiphilic copolymer with nonlinear optical (NLO) active chromophores covalently attached to the polymer backbone. By alternate deposition of this NLO active polymer with an NLO passive amphiphilic polymer, high quality multilayer films have been obtained with sufficient thickness to allow waveguiding in the LB films. The observed optical attenuation is between 1 and 3 dB cm^-1. The linear and nonlinear optical characteristics of these films have been determined, both in transmission (or reflection) and in waveguide format. The high degree of order in LB films makes this type of supramolecular structure attractive for NLO applications. Based on the observed parameters (dispersion of the refractive indices, birefringence, tilt angle of the chromophore, hyperpolarizability), different phase-matching schemes can result in efficient second harmonic generation.

Citation Download Citation

Koen J. Clays, Thomas L. Penner, Nancy J. Armstrong, and Douglas R. Robello "Phase-matched second-harmonic generation in waveguides of polymeric Langmuir-Blodgett films", Proc. SPIE 1775, Nonlinear Optical Properties of Organic Materials V, (25 February 1993); https://doi.org/10.1117/12.139211

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