Nonlinear optical study of quasi-one-dimensional platinum complexes: Two-photon excitonic resonance effect

Y. Iwasa, E. Funatsu, T. Hasegawa, T. Koda, M. Yamashita

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65 Citations (Scopus)

Abstract

Third-harmonic generation measurements have been made for the first time on oriented films of halogen-bridged mixed-valence platinum complexes for the pump wavelength region from 0.6 to 1.0 μm. The |χ(3)(- 3ω;ω,ω,ω)| spectra obtained by the Maker's fringe method show a distinct peak at about 1.8 eV with the peak value of about 4×10-11 esu. From comparison with the electroabsorption data, this peak has been identified with the two-photon resonance peak with the forbidden exciton in the Pt-halogen chains. One-dimensional exciton states in this compound take an important role in the third-order optical nonlinearity, similar to the case in conjugated polymers.

Original languageEnglish
Pages (from-to)2219-2221
Number of pages3
JournalApplied Physics Letters
Volume59
Issue number18
DOIs
Publication statusPublished - 1991 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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