Physics for Electrical Engineering: Unit IV: Optical Properties of Materials
Electro-optic effects
The appearance of double refraction under the influence of an external agent is known as artificial double refraction or induced birefringence.
ELECTRO-OPTIC EFFECTS
Isotropic
transparent materials such as glass do not exhibit double refraction under
ordinary circumstances. However, they acquire the optical properties of a
uniaxial crystal under the action of external forces. Consequently, they
exhibit double refraction.
The
appearance of double refraction under the influence of an external agent is
known as artificial double refraction or induced birefringence.
The
direction of the optical axis in such materials will be collinear with the
direction of the external force. The action of the external force is to cause
distortion of the molecular arrangement within the material.
This
inturn transforms the isotropic substance into an anisotropic substance.
The induced birefringence disappears as soon as the external force is removed.
The
materials which experience a change in their optical behaviour under the
electric field are called electro-optic materials. This optical effects are
known as electro-optic effects.
Physics for Electrical Engineering: Unit IV: Optical Properties of Materials : Tag: : - Electro-optic effects
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Physics for Electrical Engineering
PH3202 2nd Semester 2021 Regulation | 2nd Semester EEE Dept 2021 Regulation