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Proceedings Paper

Phase-matched high-order-harmonic generation by self-guided intense femtosecond laser pulses
Author(s): Katsumi Midorikawa; Yusuke Tamaki; Jiro Itatani; Minoru Obara
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Paper Abstract

We describe the phase-matched high-order-harmonic generation of femtosecond Ti:sapphire laser pulses in a self-guiding channel. Generation efficiency of the high-order harmonic was improved by phase-matched propagation in the guiding channel. The harmonics around the 49th harmonic (16 nm) were enhanced by two orders of magnitude compared to those in the plateau with a 7-mm-long, self-guided pulse in Ne. High- harmonic conversion efficiency of 10-6 was obtained, producing > nJ harmonics in the cutoff region around the 49th harmonic. The results are well explained by considering both the intrinsic phase based on the single-atom response and the macroscopic phase matching in the high-intensity interaction region.

Paper Details

Date Published: 21 October 1999
PDF: 8 pages
Proc. SPIE 3776, Soft X-Ray Lasers and Applications III, (21 October 1999); doi: 10.1117/12.366683
Show Author Affiliations
Katsumi Midorikawa, RIKEN--The Institute of Physical and Chemical Research (Japan)
Yusuke Tamaki, RIKEN--The Institute of Physical and Chemical Research (Japan)
Jiro Itatani, RIKEN--The Institute of Physical and Chemical Research (Japan)
Minoru Obara, RIKEN--The institute of Physical and Chemical Research (Japan)


Published in SPIE Proceedings Vol. 3776:
Soft X-Ray Lasers and Applications III
Jorge J. G. Rocca; Luiz Barroca Da Silva, Editor(s)

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