Soft X-ray: High harmonic generation from ions in a capillary discharge plasma waveguide

David M. Gaudiosi*, Brendan Reagan, Tenio Popmintchev, Michael Grisham, Mark Berrill, Oren Cohen, Barry C. Walker, Margaret M. Murnane, Henry C. Kapteyn, Jorge J. Rocca

*Corresponding author for this work

Research output: Contribution to specialist publicationArticle


The production of higher photon flux at shorter soft X-ray wavelengths is an important goal in the development of high harmonic generation (HHG) as a light source. The highest energy photons are generated from target atoms that ionize at high laser intensities since HHG is the result of ionization of the nonlinear medium followed by rapid acceleration of the electron in the light field. A capillary discharge creates an ideal medium for HHG from ions by providing a preformed plasma waveguide with tunable density and ionization. The presence of the discharge reduces phase modulation of the driving laser and increases the laser intensity available for harmonic generation. Use of a capillary discharge plasma as a medium for high harmonic generation shows significant increase in harmonic flux and extends efficient harmonic generation to shorter wavelengths.

Original languageEnglish
Number of pages1
Specialist publicationOptics and Photonics News
StatePublished - Dec 2006
Externally publishedYes


Dive into the research topics of 'Soft X-ray: High harmonic generation from ions in a capillary discharge plasma waveguide'. Together they form a unique fingerprint.

Cite this