Difference between revisions of "Electro-optic cofficient"
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r<sub>33</sub> (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> | <math>r_{33} = \beta(\epsilon,\omega)N<cos^3\theta>\,\!</math> | ||
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<math>\beta(\epsilon,\omega)\,\!</math> is the [[molecular first hyperpolarizability]] which at a give wavelenth ω | <math>\beta(\epsilon,\omega)\,\!</math> is the [[molecular first hyperpolarizability]] which at a give wavelenth ω | ||
<math>N<cos^3\theta>\,\!</math> is | <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 | |||
=== Measurement === | |||
[[Teng-Mann Method]] | |||
[[Attenuated Total Reflectance]] | |||
Latest revision as of 10:21, 8 November 2011
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