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DNAP Seminar

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Monday 15 February 2016, 04:00pm

Ultrafast Electron Dynamics Induced Emissions During Intense Laser- Matter Interaction ” by Dr.Indranuj Day,TIFR.

 

Abstract:

Ultrafast dynamics of electrons in a medium (solid, liquid, or gas) induced by the interaction of ultra-high intensity (1014 – 1018 Wcm-2), ultra-short pulse (~ 40 fs) laser with matter is a contemporary field of research. The fast electrons propagating in the medium emit a wide spectrum of electromagnetic radiation from low frequency microwaves, through Terahertz (THz) and optical frequencies, to high frequency X-Rays. These radiations can either be used as a diagnostic for studying the electron dynamics in the interaction medium, or applied as a probe signal for spectroscopy of other materials. Therefore, the detection and characterization of these radiations is of vital interest. Over the last one year, we at the UPHILL facility have looked into the detection and characterization of optical Cherenkov and Terahertz radiations, originating from electron motion in various medium due to intense laser-matter interaction. In this talk, an overview of the recent experimental results will be presented, and their physical significance towards the understanding of ultrafast electron dynamics would be discussed.

Location : AG-80
Contact : Anuya Mahambrey

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