Influence of weakly absorbing solid aerosol particles in lowering the optical breakdown threshold of air
This article is a theoretical investigation of the action of high-intensity laser radiation on weakly absorbing aerosol particles whose presence can create conditions for lowering the optical breakdown threshold of air. The calculations were carried out for spherical particles of fused aluminum oxide with optical constants of 1.75 - i/center dot/ 10/sup /minus/7/ and particle radii of 7-17 /mu/m. The wavelength of the incident radiation was 1.06 /mu/m. The energy density of the electric fields both inside and outside the particle was characterized in terms of the field components for the interior as well as the diffracted fields. It is concluded that the presence of weakly absorbing particles in air can create conditions for the reduction of the threshold radiation intensity required for the initiation of optical breakdown in air.
- Research Organization:
- Institute of Physics, Minsk (USSR)
- OSTI ID:
- 6004382
- Journal Information:
- J. Eng. Phys. (Engl. Transl.); (United States), Vol. 54:4; Other Information: Translated from Inzh. Fiz. Zh.; 54: No. 4, 582-585 (Apr 1988)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AEROSOLS
ELECTRIC FIELDS
AIR
OPTICAL PROPERTIES
ALUMINIUM OXIDES
TEMPERATURE EFFECTS
LASER RADIATION
WAVE PROPAGATION
AMPLITUDES
BEAM OPTICS
BOUNDARY-VALUE PROBLEMS
DIFFRACTION
ENERGY ABSORPTION
ENERGY DENSITY
EVAPORATION
LIMITING VALUES
MATHEMATICAL MODELS
MELTING
WAVELENGTHS
ABSORPTION
ALUMINIUM COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COLLOIDS
DISPERSIONS
ELECTROMAGNETIC RADIATION
FLUIDS
GASES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RADIATIONS
SCATTERING
SOLS
420300* - Engineering- Lasers- (-1989)