Properties of laser radiation scattering by a laser-induced spark plasma revisited after 40 years
Journal Article
·
· Quantum Electronics (Woodbury, N.Y.)
- A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
Experimental studies of a laser-induced spark produced in air by 1.05-{mu}m, 100-ns pulses with spatial TEM{sub 00}, TEM{sub 01} and TEM{sub 02} modes are described. It is found that when the spark is observed at an angle of 90{sup 0} to the laser beam axis, the scattered radiation has the maximal intensity outside the beam waist. The intensity ratio of the scattered laser radiation for two orthogonal polarisations is {approx}100, and the spatial structures of their depolarisation considerably differ. These properties are explained by using a model of the Fresnel reflection from the spherical front of the plasma-undisturbed gas interface. (laser radiation scattering)
- OSTI ID:
- 21466811
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 38, Issue 5; Other Information: DOI: 10.1070/QE2008v038n05ABEH013741; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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