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Proceedings Paper

Molecular to material design for anomalous-dispersion phase-matched second-harmonic generation
Author(s): Paul A. Cahill; David R. Tallant; Tony C. Kowalczyk; Kenneth D. Singer
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Paper 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.

Paper Details

Date Published: 1 December 1991
PDF: 9 pages
Proc. SPIE 1560, Nonlinear Optical Properties of Organic Materials IV, (1 December 1991); doi: 10.1117/12.50712
Show Author Affiliations
Paul A. Cahill, Sandia National Labs. (United States)
David R. Tallant, Sandia National Labs. (United States)
Tony C. Kowalczyk, Case Western Reserve Univ. (United States)
Kenneth D. Singer, Case Western Reserve Univ. (United States)

Published in SPIE Proceedings Vol. 1560:
Nonlinear Optical Properties of Organic Materials IV
Kenneth D. Singer, Editor(s)

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