Dependence of high-order harmonic intensity on the length of preformed plasma plumes

H. Singhal, V. Arora, B. S. Rao, P. A. Naik, U. Chakravarty, R. A. Khan, and P. D. Gupta
Phys. Rev. A 79, 023807 – Published 5 February 2009

Abstract

An experimental study has been carried out on high-order harmonic generation from the interaction of 45fs Ti:sapphire laser pulses with low-excited silver plasma plumes. The dependence of high-order harmonic intensity (IH) on the plasma plume length (Lmed) shows slower than quadratic scaling IHLmedp with “p0.9, 0.8, and 0.7 for 21st, 33rd, and 41st harmonics, respectively. The harmonic intensity is observed to decrease with increasing harmonic order, and this decrease is faster for longer plasma plumes. The results are explained from physical considerations of phase mismatch between the driving laser pulse and the harmonic radiation during propagation, and reabsorption of the harmonic radiation in the plasma plume.

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  • Received 30 September 2008
  • Corrected 9 February 2009

DOI:https://doi.org/10.1103/PhysRevA.79.023807

©2009 American Physical Society

Corrections

9 February 2009

Erratum

Publisher's Note: Dependence of high-order harmonic intensity on the length of preformed plasma plumes [Phys. Rev. A 79, 023807 (2009)]

H. Singhal, V. Arora, B. S. Rao, P. A. Naik, U. Chakravarty, R. A. Khan, and P. D. Gupta
Phys. Rev. A 79, 029901 (2009)

Authors & Affiliations

H. Singhal*, V. Arora, B. S. Rao, P. A. Naik, U. Chakravarty, R. A. Khan, and P. D. Gupta

  • Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India

  • *himanshu@rrcat.gov.in

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Issue

Vol. 79, Iss. 2 — February 2009

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