Phys. Rev. Lett. 99, 053904 (2007) [4 pages]Dramatic Enhancement of High-Order Harmonic GenerationReceived 15 October 2006; published 2 August 2007 We present a dramatic enhancement [ Phys. Rev. Lett. 91 043002 (2003)] of high-order harmonic generation by simultaneous irradiation of booster harmonics. A key feature of our experiment is the use of mixed gases (Xe and He) with different ionization energies. The harmonics from Xe atoms act as a booster to increase the harmonic yield from He by a factor of 4×103. The dominance of the dramatic enhancement effect is supported by simulation with the time-dependent Schrödinger equation as well as the observed spatial characteristic of the generated harmonics and dependence on medium conditions. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.053904
DOI:
10.1103/PhysRevLett.99.053904
PACS:
42.65.Ky, 32.80.Rm, 42.50.Hz
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