AI Article Synopsis
- Electro-optic (EO) crystals are chosen for electric field measurements based on their EO coefficients and dielectric constants, but traditional metrics often mispredict their sensitivity.
- Depolarization effects, usually overlooked, can significantly boost the responsiveness of EO materials, influenced by the shape and orientation of the crystals.
- For achieving maximum sensitivity, these depolarization effects are particularly effective in longitudinal EO sensors, leading to an optical modulation depth that increases with the square of the crystal length.
Article Abstract
For optimal sensitivity in electric field measurements, electro-optic (EO) crystals are typically selected based on their EO coefficients and dielectric constants. However, the conventional figure of merit yields sensitivity predictions regarding EO materials that are inconsistent with experimental data. In this Letter, we demonstrate that depolarization effects, which are often ignored, can dramatically enhance responsivity depending on the shape and orientation of the EO crystal. For optimal sensitivity, these effects are best exploited in longitudinal EO sensors, where they yield an optical modulation depth that increases quadratically with crystal length.
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| http://dx.doi.org/10.1364/OL.37.002124 | DOI Listing |
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