High-order-harmonic generation in gas with a flat-top laser beam
- Boutu, W
- Auguste, T
- BOYKO KAZYMYRENKO, Olga
- Sola, I
- Balcou, Ph
- Binazon, L
- Gobert, O
- Merdji, H
- Valentin, C
- Constant, E
- Mével, E
- Carré, Bernard
DOIAbstract
International audienceWe present experimental and numerical results on high-order-harmonic generation with a flat-top laser beam. We show that a simple binary tunable phase plate, made of two concentric glass plates, can produce a flat-top profile at the focus of a Gaussian infrared beam. Both experiments and numerical calculations show that there is a scaling law between the harmonic generation efficiency and the increase of the generation volume
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