Electroreflectance study of linear electro-optic effect in the organic solid 2-methyl-4-nitroaniline
- 15 February 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (4) , 2588-2590
- https://doi.org/10.1103/physrevb.31.2588
Abstract
Electroreflectance spectra have been measured on organic nonlinear optical crystal MNA (2-methyl-4-nitroaniline) over the exciton absorption region. From the observed electric-field-modulated reflectivities, the figure of merit (change of refractive index) and its dispersion were numerically evaluated up to the excitonic absorption bands. The large electro-optic effect in the transparent region is shown to be due to the field-induced energy shift of intramolecular charge-transfer excitations at ∼2.7 eV.Keywords
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