| Autor: |
May JC; Department of Physics and Center for Optical Technologies, Lehigh University, Bethlehem, Pennsylvania 18015, USA., Lim JH, Biaggio I, Moonen NN, Michinobu T, Diederich F |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2005 Nov 15; Vol. 30 (22), pp. 3057-9. |
| DOI: |
10.1364/ol.30.003057 |
| Abstrakt: |
We investigated the third-order nonlinear optical properties of several donor-substituted cyanoethynylethene molecules in the zero-frequency limit. We observed nonlinearities that are extraordinarily large relative to the small molecular mass of these molecules and that are within a factor of 50 from the fundamental limit. At a wavelength of 1.5 microm, the rotational average of the third-order molecular polarizability is 53 +/- 13 x 10(-48) m5 V(-2) (3.8 x 10(-33) esu) for the best molecule, which corresponds to 1.7 x 10(-48) m5 V(-2) per delocalized electron. The high nonlinear efficiency of these molecules is due to the compact two-dimensional conjugated system and the effective donor-acceptor substitution patterns. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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