High-order harmonic generation in a capillary discharge

Patent · Tue Jun 01 00:00:00 EDT 2010

OSTI ID:1176327

Rocca, Jorge J.; Kapteyn, Henry C.; Mumane, Margaret M.; Gaudiosi, David; Grisham, Michael E.; Popmintchev, Tenio V.; Reagan, Brendan A.

A pre-ionized medium created by a capillary discharge results in more efficient use of laser energy in high-order harmonic generation (HHG) from ions. It extends the cutoff photon energy, and reduces the distortion of the laser pulse as it propagates down the waveguide. The observed enhancements result from a combination of reduced ionization energy loss and reduced ionization-induced defocusing of the driving laser as well as waveguiding of the driving laser pulse. The discharge plasma also provides a means to spectrally tune the harmonics by tailoring the initial level of ionization of the medium.

• Research Organization: Colorado State Univ., Fort Collins, CO (United States); Univ. of Colorado, Denver, CO (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-04ER15592
• Assignee: Colorado State University Research Foundation (Fort Collins, CO); Regents of the University of Colorado, a body corporate (Denver, CO)
• Patent Number(s): 7,729,403
• Application Number: 11/804,888
• OSTI ID: 1176327
• Resource Relation: Patent File Date: 2007 May 21
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY