PHASE-MATCHED 3RD-HARMONIC GENERATION BY NONLINEAR PHASE-SHIFT IN A HOLLOW-FIBER

Authors
TAMAKI Y MIDORIKAWA K OBARA M
Citation
Y. Tamaki et al., PHASE-MATCHED 3RD-HARMONIC GENERATION BY NONLINEAR PHASE-SHIFT IN A HOLLOW-FIBER, Applied physics. B, Lasers and optics, 67(1), 1998, pp. 59-63
Citations number
20
Categorie Soggetti
Physics, Applied",Optics
Journal title
Applied physics. B, Lasers and optics → ACNP
ISSN journal
09462171
Volume
67
Issue
1
Year of publication
1998
Pages
59 - 63
Database
ISI
SICI code
0946-2171(1998)67:1<59:P3GBNP>2.0.ZU;2-Z
Abstract
Third-harmonic generation in a hollow glass fiber has been demonstrate d. Ti:sapphire laser pulses 100 fs with a moderate intensity of around 1x10(14)W/cm(2) are introduced into a 1.8-cm hollow fiber in room air . From the observation of the third-harmonic beam quality and spectra, it is clarified that the harmonics are pumped at the leading edge of the fundamental pulse. The model calculation accounting for the nonlin ear refractive index change of air shows a quantitative agreement with the experimental results.