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Title: Study of the spatial coherence of high order harmonic radiation generated from pre-formed plasma plumes

Abstract

A study of the spatial coherence of the high order harmonic radiation generated by the interaction of 45 fs Ti:sapphire laser beam with carbon (graphite) plasma plume has been carried out using Young's double slit interferometry. It is observed that the spatial coherence varies with harmonic order, laser focal spot size in plasma plume, and peaks at an optimal spot size. It is also observed that the spatial coherence is higher when the laser pulse is focused before the plasma plume than when focused after the plume, and it decreases with increase in the harmonic order. The optimum laser parameters and the focusing conditions to achieve good spatial coherence with high harmonic conversion have been identified, which is desirable for practical applications of the harmonic radiation.

Authors:
; ; ; ; ;  [1]
  1. Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, M.P. (India)
Publication Date:
OSTI Identifier:
22122834
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 114; Journal Issue: 3; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BEAMS; COHERENT RADIATION; CONVERSION; GRAPHITE; INTERACTIONS; INTERFEROMETRY; LASER RADIATION; LIGHT TRANSMISSION; PLASMA; PLUMES; PULSES; SAPPHIRE

Citation Formats

Kumar, M., Singhal, H., Chakera, J. A., Naik, P. A., Khan, R. A., and Gupta, P. D. Study of the spatial coherence of high order harmonic radiation generated from pre-formed plasma plumes. United States: N. p., 2013. Web. doi:10.1063/1.4816253.
Kumar, M., Singhal, H., Chakera, J. A., Naik, P. A., Khan, R. A., & Gupta, P. D. Study of the spatial coherence of high order harmonic radiation generated from pre-formed plasma plumes. United States. https://doi.org/10.1063/1.4816253
Kumar, M., Singhal, H., Chakera, J. A., Naik, P. A., Khan, R. A., and Gupta, P. D. 2013. "Study of the spatial coherence of high order harmonic radiation generated from pre-formed plasma plumes". United States. https://doi.org/10.1063/1.4816253.
@article{osti_22122834,
title = {Study of the spatial coherence of high order harmonic radiation generated from pre-formed plasma plumes},
author = {Kumar, M. and Singhal, H. and Chakera, J. A. and Naik, P. A. and Khan, R. A. and Gupta, P. D.},
abstractNote = {A study of the spatial coherence of the high order harmonic radiation generated by the interaction of 45 fs Ti:sapphire laser beam with carbon (graphite) plasma plume has been carried out using Young's double slit interferometry. It is observed that the spatial coherence varies with harmonic order, laser focal spot size in plasma plume, and peaks at an optimal spot size. It is also observed that the spatial coherence is higher when the laser pulse is focused before the plasma plume than when focused after the plume, and it decreases with increase in the harmonic order. The optimum laser parameters and the focusing conditions to achieve good spatial coherence with high harmonic conversion have been identified, which is desirable for practical applications of the harmonic radiation.},
doi = {10.1063/1.4816253},
url = {https://www.osti.gov/biblio/22122834}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 3,
volume = 114,
place = {United States},
year = {Sun Jul 21 00:00:00 EDT 2013},
month = {Sun Jul 21 00:00:00 EDT 2013}
}