Development of Raman-shifted probe laser beam for plasma diagnosis using polaro-interferometer

Pramana

S Jain¹  A P Kulkarni¹  P K Tripathi¹  M P Kamath1¹  P D Gupta¹  P A Naik¹  A S Joshi¹ 

[1] Laser Plasma Division, Raja Ramanna Center for Advanced Technology, Indore 452 013, India$$

关键词: Raman-shifted probe beam;    laser-produced plasma;    plasma diagnosis.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown