Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Geert Olbrechts"'
Autor:
André Persoons, Benjamin J. Coe, Michael B. Hursthouse, Keitaro Nakatani, Robert C. Johnson, Joseph T. Hupp, Geert Olbrechts, James A. Harris, Inge Asselberghs, Simon J. Coles, Koen Clays
Publikováno v:
Advanced Functional Materials. 12:110-116
Trans-4'-(dimethylamino)-N-R-4-stilbazolium hexafluorophosphate (R = Me, Me 1, Ph, Ph 2, 2,4-dinitrophenyl, DNPh 3, 2-pyrimidyl, Pym 4, Scheme 1) were prepd. Their electronic absorption spectra show intense, visible intramol. charge-transfer bands, t
Publikováno v:
Optical Materials. 12:221-224
A technique has been established to determine the first hyperpolarizability value β of fluorescent molecules based on femtosecond hyper-Rayleigh scattering (HRS). The intrinsic high harmonic content of the femtosecond pulse train is used as a high f
Publikováno v:
Chemical Physics Letters. 293:337-342
The first hyperpolarizability β of a free hemicyanine dye and a homologue dye included in a supramolecular complex have been determined by hyper-Rayleigh scattering. Since the inclusion complex is fluorescent, high-frequency demodulation of the time
Publikováno v:
Chemical Physics Letters. 253:135-140
Femtosecond hyper-Rayleigh scattering has been used to probe the spatial orientational fluctuations between nonlinear optical chromophores as dopants in spincoated polymer films. The fluctuation in the second-order incoherently scattered light intens
Publikováno v:
Optical Materials. 9:313-315
Femtosecond hyper-Rayleigh scattering has been used to probe the spatial orientational fluctuations between nonlinear optical chromophores as dopants in spincoated polymer films. The fluctuation in the second-order incoherently scattered light intens
Publikováno v:
Applied Physics Letters. 69:4145-4147
Femtosecond hyper‐Rayleigh scattering has recently been used to determine the spatial correlation length between nonlinear optical chromophores in polymer films [G. Olbrechts et al., Chem. Phys. Lett. 253, 135 (1996)]. This correlation length corre
Publikováno v:
Scopus-Elsevier
We now demonstrate a novel technique in the frequency-domain for the suppression of the multi-photon fluorescence contribution in hyper-Rayleigh scattering experiments. The technique takes advantages of the demodulation and the phase-shift in the fre
Publikováno v:
Organic Thin Films.
One approach to the experimental determination of the molecular second-order nonlinear polarizability, or the first hyperpolarizability, of fluorescent species by hyper-Rayleigh scattering is based on high-frequency demodulation of the time-delayed f
Publikováno v:
Organic Thin Films for Photonic Applications.
Publikováno v:
SPIE Proceedings.
Femtosecond hyper-Rayleigh scattering (HRS) is used for the suppression of multi-photon fluorescence contributions to the apparent HRS signal. The intrinsic high harmonic content of the femtosecond pulse is used as a high frequency amplitude modulati