Ultrahigh-Order Wave Mixing in Noncollinear High Harmonic Generation
Open Access
- 11 January 2011
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 106 (2), 023001
- https://doi.org/10.1103/physrevlett.106.023001
Abstract
We show that noncollinear high harmonic generation (HHG) can be fully understood in terms of nonlinear optical wave mixing. We demonstrate this by superposing on the fundamental field its second harmonic of variable intensity in a noncollinear geometry. It allows us to identify, by momentum conservation, each field’s contribution () to the extreme ultraviolet emission at frequency . We observe that the photon () yield follows an power law on the intensity, before saturation. It demonstrates that, although HHG is a highly nonperturbative process, a perturbation theory can still be developed around it.
Keywords
This publication has 29 references indexed in Scilit:
- Following a chemical reaction using high-harmonic interferometryNature, 2010
- High harmonic interferometry of multi-electron dynamics in moleculesNature, 2009
- Single-Cycle Nonlinear OpticsScience, 2008
- Tomographic imaging of molecular orbitalsNature, 2004
- Nonlinear Optics in TelecommunicationsPublished by Springer Science and Business Media LLC ,2004
- Two-Color Phase Control in Tunneling Ionization and Harmonic Generation by a Strong Laser Field and Its Third HarmonicPhysical Review Letters, 1994
- Theory of high-harmonic generation by low-frequency laser fieldsPhysical Review A, 1994
- High-order harmonic emission from mixed fieldsPhysical Review A, 1993
- Plasma perspective on strong field multiphoton ionizationPhysical Review Letters, 1993
- Light Waves at the Boundary of Nonlinear MediaPhysical Review B, 1962