The discussion revolves around the physical significance of wavelength in relation to light penetration in photodetectors, specifically avalanche and p-i-n photo diodes. Participants explore how varying wavelengths affect the depth of light penetration in these devices, particularly in the depletion region.
The discussion is active, with participants providing conceptual hints and raising questions about the underlying principles of light behavior in semiconductors. There is an exploration of different interpretations regarding the effects of wavelength on penetration and absorption, but no consensus has been reached.
Some participants emphasize the importance of understanding the relationship between wavelength and the behavior of light in materials, while others highlight the need to consider the concepts of sine and cosine functions as they relate to wavelength. The discussion is framed within the context of a homework assignment, which influences the nature of the responses.
A light wave can be thought of as a repeating pattern of electric and magnetic fields, propagating through space. The wavelength is related to that pattern.RajChakrabrty said:Homework Statement
what is the physical significance of wavelength (not the definition)?
Redbelly98 said:A light wave can be thought of as a repeating pattern of electric and magnetic fields, propagating through space. The wavelength is related to that pattern.
having sine and cosine graph concept and period ...Redbelly98 said:Have you been taught about sine and cosine functions in school, and the period of a sine or cosine graph? Those are the concepts that come into play here.
Since this appears to be a homework assignment, we don't just hand out answers. That's why I'm providing conceptual hints to help you think about what is going on.