Transmission and absorbance of materials in the deep UV

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SUMMARY

The discussion centers on the phenomenon of materials exhibiting high transmittance but transitioning to absorption in the deep ultraviolet (UV) range. Participants explain that as the energy of light quanta increases, more electrons become available for excitation, leading to absorption. The conversation highlights the concept of absorption edges, which vary among materials, indicating specific wavelengths where absorption begins. Notably, materials regain their transmittance when exposed to x-ray wavelengths.

PREREQUISITES
  • Understanding of light quantum energy and electron excitation
  • Familiarity with UV and x-ray wavelength ranges
  • Knowledge of material properties related to optical transmittance
  • Basic concepts of absorption edges in materials
NEXT STEPS
  • Research the mechanisms of electron excitation in materials under UV light
  • Explore the relationship between material composition and absorption edges
  • Study the transmittance properties of specific materials in the UV and x-ray ranges
  • Investigate applications of deep UV materials in photonics and optics
USEFUL FOR

Researchers in materials science, optical engineers, and professionals working with photonic devices will benefit from this discussion on the transmission and absorbance characteristics of materials in the deep UV spectrum.

DariusP
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I wanted to ask - why do some materials with very high transmittance inevitably start to absorb in deep UV? Is there an explanation?
 
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Don't worry. They get their transmittance back when you get to x-rays. :smile:

The mo`re energy the light quantum has, the more electrons are available for it to excite.
 
Vanadium 50 said:
Don't worry. They get their transmittance back when you get to x-rays. :smile:

The mo`re energy the light quantum has, the more electrons are available for it to excite.
But why does it start to suddenly absorb in deep UV? Any explanation for the edge and why different materials have different absorption edges?
 

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