Difference between revisions of "Attenuated Total Reflectance"

Revision as of 17:50, 11 January 2010

Attenuated Total Reflection or ATR is a technique used together with Teng Mann to measure the R33 of electro-optic materials.

The electro-optic coefficient for a poled polymer film can be calculated as follows.

<math>r_33 = \frac {2} {n^3_{TM}} \frac {\sigma n_{TM}} {\sigma E^'}\,\!</math>

where

<math>n_{TE}\,\!</math> is the ordinary index of refraction

<math>n_{TM}\,\!</math> is the extraordinary index of refraction

<math>E\,\!</math> is the modulating electric field

@@ Line 8: / Line 8: @@
 The electro-optic coefficient for a poled polymer film can be calculated as follows.
-:<math>r_33 = \frac {2}  {n^3_{TM}}   \frac {\eta n_{TM}}  {\eta E^'}\,\!</math>
+:<math>r_33 = \frac {2}  {n^3_{TM}}   \frac {\sigma n_{TM}}  {\sigma E^'}\,\!</math>
+where
+:<math>n_{TE}\,\!</math> is the ordinary index of refraction
+:<math>n_{TM}\,\!</math> is the extraordinary index of refraction
+:<math>E\,\!</math> is the modulating electric field
 === References ===