Статья

High-Order Harmonic Generation from Ions in a Capillary Discharge

David M. GaudiosiJILA, University of Colorado and National Institute of Standards and Technology, 440 UCB, Boulder, Colorado, 80309-0440, USABrendan A. ReaganDepartment of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USATenio PopmintchevJILA, University of Colorado and National Institute of Standards and Technology, 440 UCB, Boulder, Colorado, 80309-0440, USAMichael GrishamDepartment of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USAM. BerrillDepartment of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USAOren CohenJILA, University of Colorado and National Institute of Standards and Technology, 440 UCB, Boulder, Colorado, 80309-0440, USABarry C. WalkerDepartment of Physics and Astronomy, University of Delaware, 223 Sharp Laboratory, Newark, Delaware 19716, USAMargaret M. MurnaneJILA, University of Colorado and National Institute of Standards and Technology, 440 UCB, Boulder, Colorado, 80309-0440, USAHenry C. KapteynJILA, University of Colorado and National Institute of Standards and Technology, 440 UCB, Boulder, Colorado, 80309-0440, USAJ. J. RoccaDepartment of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523, USA

2006en

ABI

Аннотация

We demonstrate a significant extension of the high-order harmonic cutoff by using a fully-ionized capillary discharge plasma as the generation medium. The preionized plasma dramatically reduces ionization-induced defocusing and energy loss of the driving laser due to ionization. This allows for significantly higher photon energies, up to 150 eV, to be generated from xenon ions, compared with the 70 eV observed previously. We also demonstrate enhancement of the harmonic flux of nearly 2 orders of magnitude at photon energies around 90 eV when the capillary discharge is used to ionize xenon, compared with harmonic generation in a hollow waveguide. The use of a plasma as a medium for high-order harmonic generation shows great promise for extending efficient harmonic generation to much shorter wavelengths using ions.

Перевод пока недоступен

Идентификаторы

DOI: 10.1103/physrevlett.96.203001

Цитирования и источники

Цитирований: 4Использованных источников: 0

Показатели — AkademScholar