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- Title
Multi-μJ harmonic emission energy from laser-driven plasma.
- Authors
Heissler, P.; Barna, A.; Mikhailova, J.; Ma, Guangjin; Khrennikov, K.; Karsch, S.; Veisz, L.; Földes, I.; Tsakiris, G.
- Abstract
We report on simultaneous efficiency and divergence measurements for harmonics from solid targets generated by the relativistic oscillating mirror mechanism. For a value of the normalized vector potential of $$a_{\mathrm{L}}\simeq 1.5$$ , we demonstrate the generation of 30 μJ high-harmonic radiation in a $$17\pm 3$$ mrad divergence cone. This corresponds to a conversion efficiency of $$\gtrsim$$ 10 in the 17-80 nm range into a well-confined beam. Presuming phase-locked harmonics, our results predict unprecedented levels of average power for a single attosecond pulse in the generated pulse train. Results of PIC simulations raise the prospect of attaining efficiencies of a few percent at higher laser intensities.
- Subjects
PLASMA gas research; IONIZED gases; PHASES of matter; ELECTRICAL harmonics; ELECTRIC waves
- Publication
Applied Physics B: Lasers & Optics, 2015, Vol 118, Issue 2, p195
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-014-5968-x