Angularly resolved high-order harmonic generation in helium
- 1 January 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 49 (1) , R28-R31
- https://doi.org/10.1103/physreva.49.r28
Abstract
We report the observation of harmonics up to the 119th in helium, generated using a 1.053-μm, 1-ps chirped-pulse-amplification laser at intensities up to 3× W/, and the measurement of their far-field spatial distribution. Complex spatial distributions are found for harmonics in the plateau region and near the cutoff; their angular distribution narrows to approximately that predicted by lowest-order perturbation theory.
Keywords
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