Surface-mediated enhancement of optical phase conjugation in metal colloids
D. RicardLaboratoire d’ Optique Quantique, Ecole Polytechnique, 91128-Palaiseau, Cedex, FrancePh. RoussignolLaboratoire d’ Optique Quantique, Ecole Polytechnique, 91128-Palaiseau, Cedex, FranceChr. FlytzanisLaboratoire d’ Optique Quantique, Ecole Polytechnique, 91128-Palaiseau, Cedex, France
1985en
ABI
Аннотация
We show that the optical phase-conjugated reflectivity from silver and gold colloids is enhanced by several orders of magnitude. The reflectivity on resonance is comparable with that of CS(2) for metal-particle volume concentration of a few parts in 10(6). We trace this enhancement to the nonlinearities of the electrons in the metal particles and extract the value of their optical Kerr-effect coefficient.
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