Exploring Light's Polarization States: Longitudinal, Temporal, and Scalar

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SUMMARY

This discussion focuses on the different polarization states of light, specifically longitudinal, temporal, and scalar polarization. Longitudinal polarization occurs when the electric field (E-field) aligns with the direction of propagation, typically observed in the near field, which encompasses non-propagating modes. The concept of temporal or scalar polarization, related to the E0 component, is explored in quantum electrodynamics (QED) courses. Additionally, plasmon-polaritons are mentioned as a phenomenon where longitudinal polarization can occur in media.

PREREQUISITES
  • Understanding of electromagnetic (EM) fields
  • Familiarity with quantum electrodynamics (QED)
  • Knowledge of plasmon-polaritons
  • Basic principles of RF and antenna design
NEXT STEPS
  • Research experimental methods for generating longitudinal polarization in light
  • Study the properties and applications of plasmon-polaritons
  • Explore RF and antenna design literature for insights on polarization modes
  • Learn about the implications of temporal and scalar polarization in quantum optics
USEFUL FOR

Physicists, optical engineers, and researchers interested in advanced light polarization phenomena and their experimental applications.

jk22
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I heard that light in a medium can have longitudinal polarization i.e the e field in the direction of propagation, but i saw in a qed course that light can have temporal or scalar polarization (the E0 component). What is that one and how can one obtain this kind of polarization experimentally ?
Thanks.
 
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The 'near field' generally has a longitudinal component- this is a non-propagating mode. Anything that generates an EM field is said to be 'covered' by the near field.

You will likely learn more about this in the RF and antenna design literature.
 
Modes with longitudinal polarization can also occur for light propagating in media. They are called there plasmon-polaritons.
 

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