Structure-function relationships of second hyperpolarizabilities in two-dimensional molecules

Lin X. Chen*, Braja K. Mandal, Bipin Bihari, A. K. Sinha, Manjunath Kamath

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations


The enhancement of the third order susceptibilities χ (3) and second order molecular hyperpolarizabilites < γ > in a series of convenlently stacked dimer and trimer macrocycles (SiPc and SiNc) was observed through the phase conjugated signals from DFWM measurements at both 1064 and 532 nm. The FWHM of the phase conjugated signals at 532 nm is much smaller than those at 1064 nm and those of the reference compound CS 2. The < γ > values at both wavelengths as a function of number of the monomer units (n) have an approximate n 3 dependence, differing only in the scaling constant. The origin of such enhancement is discussed and compared to those in 1D π-conjugated systems.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsGustaaf R. Moehlmann
Number of pages10
StatePublished - Dec 1 1995
EventNonlinear Optical Properties of Organic Materials VIII - San Diego, CA, USA
Duration: Jul 11 1995Jul 13 1995


OtherNonlinear Optical Properties of Organic Materials VIII
CitySan Diego, CA, USA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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