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Revisiting the basic theory of sum-frequency generation
- Source :
- The Journal of chemical physics. 153(18)
- Publication Year :
- 2020
-
Abstract
- The basic theory of sum-frequency generation (SFG) is revisited. A rigorous derivation showing that linear optical transmission and reflection at an interface result from the interference of the incident wave and induced radiation wave in a medium is presented. The derivation is extended to SFG in a medium with a finite interface layer to see how SFG evolves. Detailed description on interface vs bulk and electric dipole (ED) vs electric quadrupole (EQ) contribution to SFG are provided with essentially no model dependence, putting the theory of SFG on a solid ground and removing possible existing confusions. Electric-quadrupole contributions to SFG from the interface and bulk are discussed. It is seen that there is a relevant bulk EQ contribution intrinsically inseparable in measurement from the interface ED contribution but plays a major role among all EQ contributions; its importance relative to the ED part can only be judged by referring to the established reference cases.
- Subjects :
- Interface layer
Physics
Sum-frequency generation
010304 chemical physics
Interface (Java)
General Physics and Astronomy
010402 general chemistry
Interference (wave propagation)
01 natural sciences
Physics::Geophysics
0104 chemical sciences
Dipole
Reflection (mathematics)
Transmission (telecommunications)
Quantum mechanics
0103 physical sciences
Quadrupole
Physical and Theoretical Chemistry
Subjects
Details
- ISSN :
- 10897690
- Volume :
- 153
- Issue :
- 18
- Database :
- OpenAIRE
- Journal :
- The Journal of chemical physics
- Accession number :
- edsair.doi.dedup.....2f1a5129932c613d82d1336d8de138cd