Are There Electromagnetic Waves with Non-Orthogonal Components?

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Electromagnetic waves typically have electric and magnetic fields that are perpendicular to each other. However, introducing a uniform constant electric field can result in a scenario where the electric field is no longer orthogonal to the magnetic field. The discussion explores whether there are theoretical possibilities for electromagnetic waves with non-orthogonal components. Participants express interest in both practical examples and theoretical constructs that might allow for such configurations. The inquiry highlights the complexity of electromagnetic wave behavior under varying conditions.
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Dear friends,

I'd like to know if there exists an electromagnetic wave that magnetic field is not perpendicular to electric field.

Thanks.
 
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If you have a "regular" EM wave, with E perp B,
then add a uniform constant E-field in the region,
the resulting E is no longer perpendicular to B.

Or are you looking for a "less trivial" situation?
 
Hello lightgrav:

I'm looking for this posibility, if there's probably or simply teoretical possible that one electro-magnetic wave could have his components not orthogonal. If not, if there's any type of wave that could be this way.

Thanks.
 

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