Polarized light and refraction

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Discussion Overview

The discussion centers on the behavior of polarized light as it interacts with an interface between two different media, specifically regarding refraction and the influence of polarization. Participants explore theoretical aspects related to waveguides and the implications of linear polarization on light's behavior at interfaces.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether polarized light, specifically linear polarization, will refract at an interface, suggesting that if the electric field is normal to the interface, refraction may not occur.
  • Another participant argues that polarization does not affect the occurrence of refraction at the surface, but notes that birefringent materials can have different effects.
  • A different viewpoint asserts that light will refract according to Snell's law, regardless of polarization, provided the material is not birefringent, and that polarization influences the ratio of reflected to transmitted light.
  • One participant suggests applying the continuity conditions of the electric displacement field and electric field across the interface to analyze potential refraction amplitude.

Areas of Agreement / Disagreement

Participants express differing views on the role of polarization in refraction, with no consensus reached on whether polarization affects the refraction of light at the interface.

Contextual Notes

Participants reference specific conditions such as birefringence and the continuity conditions of electric fields, indicating that the discussion may depend on these factors, which are not fully resolved.

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polarized light and refraction!

Hi guys

I need to discuss the polarized light in the waveguide and its refraction at an interface between two different media.
if the light is polarized like in the picture(see attached) and oscillating only up and down (linear polarization), then does the light will be refracted at the interface or not?

my idea is that although the interface is tilted, the angle between electric field and the interface is normal, then no refraction.

I will appreciate if somebody is interested in this problem.
 

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The light will be refracted and the angle is given by Snells law independent on it's polarization (as long as the material is not birefringent). Polarization only affects the ratio of light being reflected/ transmitted.
 


just apply the condition of continuity of normal component of D and continuity of tangential component of E across the interface.see if it does give rise to any refraction amplitude.
 

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