Difference between revisions of "Electro-optic cofficient"
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<math>N\,\!</math> is chromophore number density | <math>N\,\!</math> is chromophore number density | ||
<math><cos^3\theta>\,\!</math> is the acentricity | <math><cos^3\theta>\,\!</math> is the acentricity or order parameter | ||
Revision as of 15:00, 18 August 2009
r33 (pronounced "r three three") also called the electro-optic coefficient is a measure of the changability optical activity of a material when an electric field is applied.
<math>r_{33} = \beta(\epsilon,\omega)N<cos^3\theta>\,\!</math>
where
<math>\beta(\epsilon,\omega)\,\!</math> is the molecular first hyperpolarizability which at a give wavelenth ω
<math>N\,\!</math> is chromophore number density
<math><cos^3\theta>\,\!</math> is the acentricity or order parameter
Figure-of-Merit
Figure-of-merit: r33 preferably > 1000 pm/V
Current Status: 600pm/V
For poled polymers for THz generation and detection
Figure-of-merit: r33 preferably > 350 pm/V
Current Status: 600pm/V