Now showing items 1-5 of 5
Measurement of complex Χ(3) using degenerate four-wave mixing with an imaged 2-D phase grating
(Georgia Institute of Technology, 2006-09)
We present a simple optical arrangement for phase sensitive detection of degenerate four-wave mixing (DFWM) to characterize the real and imaginary parts of c(3) using an imaged 2-D phase grating. Phase sensitive coherent ...
Broadband Z-scan characterization using a high spectral irradiance high quality supercontinuum
(Georgia Institute of Technology, 2008-02)
We generate a high-spectral-irradiance, high-quality continuum by weakly focusing femtosecond pulses in Kr gas. We use this continuum as a source for rapid Z-scan measurements of the degenerate nonlinear absorption spectrum ...
Strong two-photon absorption at telecommunications wavelengths in nickel bis(dithiolene) complexes
(Georgia Institute of Technology, 2007-03)
The two-photon absorption spectrum of a nickel bis(dithiolene) complex with extended conjugation and π-donor substitution is measured by using Z-scan and pump–probe techniques with femtosecond pulses over the spectral range ...
Quantum-chemical investigation of second-order nonlinear optical chromophores: Comparison of strong nitrile-based acceptor end groups and role of auxiliary donors and acceptors
(Georgia Institute of Technology, 2006-01)
We report a detailed quantum-chemical investigation of donor-acceptor substituted dipolar nonlinear optical chromophores incorporating the 4-(dimethylamino)phenyl donor end group and a variety of strong heterocyclic acceptor ...
Direct imaging through scattering media by use of efficient third-harmonic generation in organic materials
(Georgia Institute of Technology, 2004-11)
We report on real-time, time-gated, direct imaging through scattering media with an attenuation of 14 mean-free paths by use of third-harmonic generation in the eye-safe and telecommunication-compatible near-IR spectral ...