Diffusion stimulee de lumiere vers l'arriere dans l'argon et l'helium gazeux comprime
| Autor: | B. Vodar, S. Dumartin, B. Oksengorn |
|---|---|
| Rok vydání: | 1970 |
| Předmět: |
Materials science
Argon business.industry Scattering Ruby laser chemistry.chemical_element Radiation Amagat Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention symbols.namesake Optics chemistry law symbols Laser power scaling Electrical and Electronic Engineering Physical and Theoretical Chemistry Rayleigh scattering business Helium |
| Zdroj: | Optics Communications. 1:363-366 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/0030-4018(70)90070-2 |
| Popis: | Under certain conditions of gas pressure and laser power, compressed argon backscatters an important fraction of the light from a Q -switched ruby laser. The frequency of the scattered light is shifted very slightly towards the anti-Stokes side by approximately the half-width of the laser line. This radiation has the characteristics of stimulated scattering; i.e. threshold, directivity and narrowing of the light pulse. The emission occurs during breakdown for densities below 200 amagat, but appears before the breakdown for densities above 200 amagat. A similar phenomenon, but with a much weaker intensity, is observed in compressed helium. It is suggested that these effects result from stimulated Rayleigh scattering. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|