Published February 3, 2011
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Carbon aerogel plumes as an efficient medium for higher harmonic generation in the 40-90 nm range

Creators

  • 1. Raja Ramanna Centre for Advanced Technology
  • 2. Centre for Materials for Electronics Technology, Thrissur 680581, India

Description

We have performed a study on the preparation, characterization, and high-order harmonic generation (HHG) of a femtosecond laser in carbon aerogel plasma plumes. A higher conversion of the femtosecond laser radiation into HHG in the range of 40–90 nm is observed, as compared to that in plasma plumes of silver and C60 targets, where the highest conversion efficiency has been previously reported. Next, the application of a two-color pump scheme allowed further enhancement of the harmonic yield compared to a single-color pump scheme in the carbon aerogel, for both odd and even harmonics. The conversion efficiency from the carbon aerogel plasma was estimated at not less than 5×10−5.
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