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Optical Power Limiters for Nanosecond Pulses: Design of New Dendritic Chromophores with Exceptionally Large Two-Photon Cross-Sections

Published online by Cambridge University Press:  10 February 2011

E. H. Elandaloussi
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717, uchcs@montana.edu
C. Spangler
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717, uchcs@montana.edu
M. Casstevens
Affiliation:
Laser Photonics Technology, Inc., 1576 Sweet Home Rd., Amherst, NY 14228
D. Kumar
Affiliation:
Laser Photonics Technology, Inc., 1576 Sweet Home Rd., Amherst, NY 14228
J. Weibel
Affiliation:
Laser Photonics Technology, Inc., 1576 Sweet Home Rd., Amherst, NY 14228
R. Burzynski
Affiliation:
Laser Photonics Technology, Inc., 1576 Sweet Home Rd., Amherst, NY 14228
G.-S. HE
Affiliation:
Department of Chemistry, SUNY-Buffalo, Amherst, NY 14228
P. Prasad
Affiliation:
Department of Chemistry, SUNY-Buffalo, Amherst, NY 14228
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Abstract

Over the past five years there has been a renaissance in design studies of chromophores with the possibility of enhanced two-photon absorption (TPA). While two-photon absorption has been described for molecules such as laser dyes in solution for a number of years1, it has only been recently that researchers have attempted detailed structure-property relationships to elucidate how new chromophores with greatly enhanced two-photon cross-sections might be designed. Since the intrinsic cross-sections are related to the Im component of the third order optical nonlinearity, it should come as no surprise that much of the previous work in the literature which focused on structure-property relationships for molecules with enhanced NLO response might be applicable to the design of new TPA chromophores. In this presentation we will review our recent studies in this area, and our rationale for the applicability of dendritic strctures based on photonic-active repeat units for enhancment of two-photon absorption, particularly in the area of optical power limiting applications.

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Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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