Semiconductor Electromagnetic Wave Interactions

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Discussion Overview

The discussion centers on the interactions between semiconductors and electromagnetic radiation, specifically focusing on absorption, scattering, transmission, and reflection properties. Participants explore these interactions in the context of free and bound charges, with a particular emphasis on THz wave propagation through excited semiconductors.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant seeks information on semiconductor interactions with electromagnetic radiation, expressing difficulty in finding sources.
  • Another participant points out the broadness of the question and suggests looking for resources at a university library.
  • A participant clarifies their research focus on THz wave propagation in semi-insulating GaAs, mentioning the Debye Model and the transmission and absorption coefficients.
  • This participant lists various types of scattering (Mie, Rayleigh, Brillouin, and Raman) but notes that their instructor indicated scattering may not be significant for their case.
  • A follow-up question is raised regarding the scattering of long wavelengths from semiconductors, with an inquiry into why the intensity is considered negligible.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the significance of scattering in the context of THz wave propagation through semiconductors, and there are varying levels of understanding regarding the topic.

Contextual Notes

The discussion lacks specific assumptions about the participants' backgrounds in solid state physics, which may affect the depth of the conversation. There are also unresolved questions regarding the importance of scattering processes in the context of the participant's research.

Who May Find This Useful

Researchers and students interested in semiconductor physics, particularly those focusing on electromagnetic wave interactions and THz wave propagation.

Septim
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Greetings everyone,

I need information about how semiconductor interacts with electromagnetic radiation, the absorption, scattering, transmission and reflection properties of semiconductors. I also need to associate this information with free charges or bound charges. I would be grateful for your help on this topic because I was not able to find related sources on this matter. Especially good references on the topic would be of great help. Thanks in advance.
 
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You're asking a very broad question on a very large topic, and you've given no information about what your background or level of understanding of solid state physics is. You can have a look here: http://britneyspears.ac/lasers.htm or otherwise look for books at your university library.
 
Thanks for the reply. Yes you are right, I apologize for that. I am currently doing some research on propagation of THz waves through excited semiconductors but I have yet to take a course on semiconductors and my aim is to provide a qualitative treatment of the four processes I mentioned without going into detail. My focus is going to be on Debye Model,tranmission and absorption coefficient of semi-insulating GaAs. I know there are various types of scatterings
Mie Scattering, Rayleigh Scattering, Brillouin Scattering, and Raman Scattering. My instructor told me that scattering is not an process of importance in our case and I have yet to understand it.
 
Last edited:
Do you have any knowledge on how long wavelengths scatter from semiconductors? My instructor told me that they have negligible intensity but why so?
 

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