We demonstrate the generation of up to the 63rd harmonic of a Ti:sapphire laser pulse , using a prepulse- produced boron plasma as the nonlinear medium. The influence of various parameters on the harmonic conversion efficiency was analyzed. The steep decrease in intensity for low-order harmonics (up to 19th order) was followed by a plateau. Typical conversion efficiencies were evaluated to be (for a 3rd harmonic) to (within the plateau region). Harmonic generation appeared to be efficient for the plasma that comprised neutral atoms and singly ionized boron.
© 2005 Optical Society of AmericaFull Article | PDF Article
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