Abstract
We study experimentally how to control and improve phase matching of high-order harmonic generation. We use a birefringent lens and a birefringent compensator to obtain a fundamental laser pulse (150 fs, 800 nm, similar to 4 mJ) With two foci Separated by 6.2 mm along the propagation axis and with a controllable phase delay between the polarizations along the optic axes of the birefringent optical components. This enables us to enhance the high-order harmonic conversion efficiency for the high-order harmonics in neon to 3 x 10(-8), a factor of 4 higher compared to a single-focus setup in similar conditions. The enhancement is achieved by improving the phase matching and at the same time maintaining a high intensity in a large generating volume. [S1050-2947(99)04512-6].
Original language | English |
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Pages (from-to) | 5010-5018 |
Journal | Physical Review A (Atomic, Molecular and Optical Physics) |
Volume | 60 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1999 |
Subject classification (UKÄ)
- Atom and Molecular Physics and Optics