Rayleigh one-two photon, dipole approx

Click For Summary
SUMMARY

This discussion focuses on the concepts of Rayleigh scattering and its implications in the context of near-infrared (NIR) light propagation in biological tissues, specifically skin. The user inquires about the nature of Rayleigh scattering in relation to the dipole approximation, particularly when considering larger molecules such as proteins. The conversation highlights the relevance of Fermi's Golden Rule and the Kramer-Heisenberg dispersion relation in understanding absorption, emission, and Raman transitions in these scenarios.

PREREQUISITES
  • Understanding of Rayleigh scattering principles
  • Familiarity with the dipole approximation in light-matter interactions
  • Knowledge of Fermi's Golden Rule
  • Basic concepts of Raman scattering
NEXT STEPS
  • Research the effects of molecular size on Rayleigh scattering
  • Explore the application of Fermi's Golden Rule in complex systems
  • Investigate the Kramer-Heisenberg dispersion relation in detail
  • Learn about the differences between one-photon and two-photon processes in spectroscopy
USEFUL FOR

Researchers in biophysics, optical engineers, and anyone studying light interactions with biological tissues, particularly in the context of NIR spectroscopy and scattering phenomena.

evidenso
Messages
37
Reaction score
0
Hello
Im having 2 questions
I'm investigating NIR light propagation in tissue such as the skin and my question is:

In dipole aprox: Absorption, emission and normal Raman scattering is one-photon processes. But what is Rayleigh scattering?

When light hit a small molecule the dipole approximation is good. But what if the single molecule
is large like a protein. What happens then to the absorption/emission/raman transitionprobability (fermis golden rule, Kramer-Heisenberg disp relation)?
 
Physics news on Phys.org
no one ? ;)
 

Similar threads

Undergrad Difference between Scattering and Emission of Photons
  • · Replies 25 ·
Replies
25
Views
13K
Graduate Rayleigh vs Raman scattering for low saturation
  • · Replies 0 ·
Replies
0
Views
2K
Undergrad What's the interval between photons in stimulated emission?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Thermal Emission and Scattering (Mie or Rayleigh)
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Thomson - Rayleigh Scattering: Rotational & Vibrational Energy Levels
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Difference between Raman scattering and Rayleigh scattering
  • · Replies 3 ·
Replies
3
Views
19K
Graduate Questions on Raman Effect and its Clarifications
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Understanding MASERs and their properties
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Abrahams-Minkowskii Controversy: Is Phonon Momentum Defined?
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Two recent tests of loop quantum gravity theory
  • · Replies 15 ·
Replies
15
Views
6K