Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Improved second-harmonic generation from homomolecular Langmuir–Blodgett films of a transparent dye

Not Accessible

Your library or personal account may give you access

Abstract

The optically nonlinear dye [E-N-dodecyl-4-(2-(4-docosyloxyphenyl)ethenyl)quinolinium]+-(octadecylsulfate-)x(bromide-)1-x forms noncentrosymmetric Langmuir–Blodgett films. The second-harmonic intensity increases quadratically with the number of layers in the range investigated, i.e., as I2ω(N)=I2ω(1)N2 for 2N100, and shows long-term stability. Films of the dye are almost transparent, with an absorbance of 3×10-4 layer-1 at the second-harmonic wavelength, but, nonetheless, the equivalent monolayer intensity, I2ω(N)/N2, is 30% of the resonantly enhanced signal from monolayer films of the colored hemicyanine dye reported by Girling, et al. [J. Opt. Soc. Am. B 4, 950 (1987)]. The second-order susceptibility, film thickness, and chromophore tilt angle relative to the normal to the substrate are χzzz(2)=26 pm V-1 at 1.064 μm, l=5.0 nm layer-1, and ϕ=30°, respectively, for x=0.5.

© 1998 Optical Society of America

Full Article  |  PDF Article
More Like This
Aggregation-induced second-harmonic generation

Geoffrey J. Ashwell, Paul Leeson, Gurmit S. Bahra, and Christopher R. Brown
J. Opt. Soc. Am. B 15(1) 484-488 (1998)

Second-harmonic generation in Langmuir–Blodgett monolayers of stilbazium salt and phenylhydrazone dyes

Donald Lupo, Werner Prass, Ude Scheunemann, Andre Laschewsky, Helmut Ringsdorf, and Isabelle Ledoux
J. Opt. Soc. Am. B 5(2) 300-308 (1988)

Second-harmonic generation in Langmuir–Blodgett waveguide overlays on single-mode optical fiber

Sukhvinder S. Johal, Stephen W. James, Ralph P. Tatam, and Geoffrey J. Ashwell
Opt. Lett. 24(17) 1194-1196 (1999)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved