Five-membered heteroaromatic hydrazone derivatives for second-order nonlinear optics

U. Meier*, Ricky M S WONG, F. Pan, Ch Bosshard, P. Gunter, V. Gramlich

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

The authors synthesized a series of novel five-membered heteroaromatic hydrazone derivatives substituting one phenyl ring by a five-membered heteroaromatic thienyl or furyl ring. Their molecular hyperpolarizabilities and dipole moments were experimentally determined by electric-field-induced second harmonic generation and dielectric measurements, respectively. Values of βμ of up to 370×10-40 m4V-1 at 1.907 μm have been obtained. For the first time it is shown that the furan derived π-conjugated core can become the most effective π-conjugated bridge in enhancing the molecular hyperpolarizability when compared with the corresponding phenyl and thienyl counterparts if an appropriate electron donor and acceptor are used. The macroscopic nonlinearity of the novel crystalline hydrazone derivatives has been investigated by the Kurtz and Perry powder test showing second harmonic activities up to 2-3 orders of magnitude higher than that of urea.

Original languageEnglish
Pages125
Number of pages1
Publication statusPublished - 1996
EventProceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe - Hamburg, Ger
Duration: 8 Sep 199613 Sep 1996

Conference

ConferenceProceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe
CityHamburg, Ger
Period8/09/9613/09/96

Scopus Subject Areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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