Share Email Print

Proceedings Paper

Nonlinear absorption in diphenyl butadiene, diphenyl butadiyne, and a series of acetylene compounds using the Z-scan technique
Author(s): Paul A. Fleitz; Daniel G. McLean; Richard L. Sutherland
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The nonlinear absorption in a series of compounds has been investigated using the open aperture Z-scan technique. The compounds investigated were diphenyl acetylene, diphenyl butadiene, diphenyl butadiyne, 1,4-bis (phenylethynyl) benzene, bis (4-biphenyl) acetylene, 4,4'-bis (phenylethynyl) biphenyl. Solutions of the compounds were made in chloroform and showed no linear absorption at the laser wavelength. The Z-scan measurements were carried out using 35 ps laser pulses at 532 nm. Nonlinear absorption was observed for all of these materials, and the nonlinear absorption coefficient (beta) has been determined from this data. The nonlinear absorption process for two of the compounds, bis (4-biphenyl) acetylene, 4,4'-bis (phenylethynyl) biphenyl, is most likely caused by a two-photon absorption to a two-photon allowed state. The nonlinear absorption mechanism for the remaining compounds appears to be two-photon absorption followed by linear absorption from this excited state. The refractive nonlinearity has been more difficult to determine, and in most cases appears to be indistinguishable from the solvent contribution.

Paper Details

Date Published: 6 July 1994
PDF: 8 pages
Proc. SPIE 2229, Nonlinear Optical Materials for Switching and Limiting, (6 July 1994); doi: 10.1117/12.179591
Show Author Affiliations
Paul A. Fleitz, Systran Corp. (United States)
Daniel G. McLean, Science Applications International Corp. (United States)
Richard L. Sutherland, Science Applications International Corp. (United States)

Published in SPIE Proceedings Vol. 2229:
Nonlinear Optical Materials for Switching and Limiting
M. J. Soileau, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?