| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1537152 | Optics Communications | 2011 | 8 Pages |
Abstract
In this paper we revisit the third harmonic generation from a femtosecond laser filament in air and its significant enhancement (~ 100 times) with a intercepting pump pulse, which has been reported very recently. The enhanced third harmonic is studied as a function of the pulse polarization, time delay between the pump and signal pulses, laser pulse energy, etc. We provide an explanation for the enhancement of third harmonic based on a quenching of interference effects present near filamentation threshold. Simulations based on a two-color propagation code reproduce well the experimental observations and confirm our interpretation.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yi Liu, Magali Durand, Aurélien Houard, Benjamin Forestier, Arnaud Couairon, André Mysyrowicz,