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Optical Scattering Electric Field Norm

Posted 23 août 2016, 15:04 UTC−4 Low-Frequency Electromagnetics, RF & Microwave Engineering, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization Version 4.3a 5 Replies

Rahim Leung
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Hi,

I am currently attempting to model the optical scattering off a 2D nanoparticle. The background electric field is a plane wave only in the y direction, so I plotted both the electric field norm and the magnitude of the y component of the electric field. Both should yield the same result as the electric field only has a y component, but the plots showed a discrepancy between the two. Does anyone know a reason of why this discrepancy occurs?

Thanks!
5 Replies Last Post 24 août 2016, 06:57 UTC−4
Evgeniy Kuznetsov
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Posted: 8 years ago 24 août 2016, 02:56 UTC−4
Hi,

After scattering you have both y and x component of electric field. I think this is the reason.
Hi, After scattering you have both y and x component of electric field. I think this is the reason.
Rahim Leung
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Posted: 8 years ago 24 août 2016, 04:32 UTC−4
Hi,

Thanks for the reply. I've recently just made a plot of the magnitude of the electric field including the x and y components, but the x component had a negligible effect; the discrepancy still remained.

Both plots (of the e-field norm and magnitude that I calculated using sqrt(realdot(Ex, Ex) + realdot(Ey, Ey))) have the shape shape, but one appears to be stretched.

I have included a graph of the results for reference. Thanks!
Hi, Thanks for the reply. I've recently just made a plot of the magnitude of the electric field including the x and y components, but the x component had a negligible effect; the discrepancy still remained. Both plots (of the e-field norm and magnitude that I calculated using sqrt(realdot(Ex, Ex) + realdot(Ey, Ey))) have the shape shape, but one appears to be stretched. I have included a graph of the results for reference. Thanks!

Attachments:

Evgeniy Kuznetsov
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Posted: 8 years ago 24 août 2016, 05:55 UTC−4
Ok, can you attach your model?
Ok, can you attach your model?
Rahim Leung
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Posted: 8 years ago 24 août 2016, 06:12 UTC−4
Apologies. The file is too large to be attached in this thread.

Is the E-field norm (emw.normE) the norm of the scattered field or of the total field?

Thanks.
Apologies. The file is too large to be attached in this thread. Is the E-field norm (emw.normE) the norm of the scattered field or of the total field? Thanks.
Evgeniy Kuznetsov
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Posted: 8 years ago 24 août 2016, 06:57 UTC−4
It is the norm of the total field.
It is the norm of the total field.

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