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Development of Raman-shifted probe laser beam for plasma diagnosis using polaro-interferometer
M P Kamath A P Kulkarni S Jain P K Tripathi A S Joshi P A Naik P D Gupta
Conributed Papers Volume 75 Issue 5 November 2010 pp 883-888
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Keywords
Raman-shifted probe beam ;laser-produced plasma ;plasma diagnosis. -
Abstract
Optical diagnostics of laser-produced plasma requires a coherent, polarized probe beam synchronized with the pump beam. The probe beam should have energy above the background emission of plasma. Though the second harmonic probe beam satisfies most of the requirements, the plasma emission is larger at the harmonic frequencies of the pump. Hence, at high intensities we need a probe beam at non-harmonic frequencies. We have set up a Raman frequency shifted probe beam using a pressurized hydrogen cell that is pumped by the second harmonic of the Nd glass laser that operates at only one Stokes line of 673.75 nm.
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Author Affiliations
M P Kamath1 A P Kulkarni1 S Jain1 P K Tripathi1 A S Joshi1 P A Naik1 P D Gupta1
- Laser Plasma Division, Raja Ramanna Center for Advanced Technology, Indore 452 013, India
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Dates
- Published
- November 2010
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Pramana – Journal of Physics
Volume 96, 2022
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