High-order harmonic generation by ultrashort KrF and Ti:sapphire lasers
- 1 April 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 47 (4) , R2480-R2483
- https://doi.org/10.1103/physreva.47.r2480
Abstract
Clear plateaus, up to the 71st harmonic in Ne and the 69th harmonic in He, were observed in a Ti:sapphire laser, while a gradual decrease to the 25th harmonic in Ne and the 23rd harmonic in He were observed in a KrF laser. High intensity, along with a shorter pulse, induced self-phase-modulation and/or beam breakup in gas media and resulted in the serious degradation or complete disappearance of higher-order harmonics. In the Ti:sapphire laser, the harmonic distribution did not depend on the pulse width of from 120 to 730 fs at a fixed peak intensity.Keywords
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