Varying Permittivity: Low-Freq. Electro-Optic Modulation Explained

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SUMMARY

The discussion centers on the generation of permittivity variation through low-frequency electro-optic modulation, specifically in acousto-optic devices. Participants inquire about the mechanisms behind permittivity changes, which are attributed to density variations. The conversation also touches on the technical challenges of controlling these changes, questioning whether they can be manipulated linearly or exponentially through external electromagnetic fields.

PREREQUISITES
  • Understanding of electro-optic modulation principles
  • Familiarity with acousto-optic devices and their functionality
  • Knowledge of permittivity and its dependence on material density
  • Basic concepts of electromagnetic fields and their effects on materials
NEXT STEPS
  • Research the principles of low-frequency electro-optic modulation
  • Explore the design and operation of acousto-optic devices
  • Investigate methods for controlling permittivity in materials
  • Study the influence of external electromagnetic fields on material properties
USEFUL FOR

Researchers in optics, engineers working with acousto-optic devices, and anyone interested in the manipulation of material properties through electro-optic modulation.

karlzr
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I read from a paper that we can generate the permittivity variation by low-frequency electro-optic modulation.
So, does anyone know, how this modulation changes the permittvity? or a link will be appreciated!
 
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In acousto-optic devices, the permittivity changes due to changes in the density. Do you have a link to a specific device?
 
Andy Resnick said:
In acousto-optic devices, the permittivity changes due to changes in the density. Do you have a link to a specific device?

No, I just want to know whether it is technically difficult to make it, for instance, to increase linearly or exponentially.
How to control it? is it due to the influence of external electromagnetic field or something else?
 

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