Molecular to material design for anomalous-dispersion phase-matched second-harmonic generation

Paul A. Cahill; David R. Tallant; Tony C. Kowalczyk; Kenneth D. Singer

doi:10.1117/12.50712

1 December 1991 Molecular to material design for anomalous-dispersion phase-matched second-harmonic generation

Paul A. Cahill, David R. Tallant, Tony C. Kowalczyk, Kenneth D. Singer

Proceedings Volume 1560, Nonlinear Optical Properties of Organic Materials IV; (1991) https://doi.org/10.1117/12.50712
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Anomalous-dispersion phase-matching (ADPM) offers large enhancements in the effective hyperpolarizabilities of nonlinear optical processes such as second harmonic generation (SHG) in organic materials. The principal barrier to the practical application of this approach is the residual absorption of asymmetric organic chromophores at the second harmonic which is shown by calculation to inherently limit the efficiency of SHG. Resonance Raman experiments on a nonlinear optical (NLO) dye optimized for doubling 800 nm light indicate that the residual absorbance is probably due to vibronic levels associated with the electronic absorption. Recent work with thin films of PMMA doped with this ADPM dye showed zero dispersion at approximately 6% concentration.

Citation Download Citation

Paul A. Cahill, David R. Tallant, Tony C. Kowalczyk, and Kenneth D. Singer "Molecular to material design for anomalous-dispersion phase-matched second-harmonic generation", Proc. SPIE 1560, Nonlinear Optical Properties of Organic Materials IV, (1 December 1991); https://doi.org/10.1117/12.50712

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