Skip to Main content Skip to Navigation
Journal articles

Spatial quality improvement of a Ti:Sapphire laser beam by modal filtering

Benoît Mahieu 1 David Gauthier 2 Michel Perdrix 3, 4 Xunyou Ge 5, 4 Willem Boutu 4, 5 Fabien Lepetit 4, 3 Fan Wang 6 Bertrand Carré 4 Thierry Auguste 4, 5 Hamed Merdji 4, 5 David Garzella 4, 3 Olivier Gobert 4, 3
3 SLIC - Serveurs Laser
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
5 ATTO - Attophysique
IRAMIS - Institut Rayonnement Matière de Saclay, LIDyl - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
Abstract : We present a study on the improvement of the spatial quality of a laser beam, called modal filtering, suitable to high-energy lasers. The method is theoretically compared with the classical pinhole filtering technique in the case of an astigmatic Gaussian beam, illustrating, in this particular case, its efficiency for filtering low spatial frequencies. Experimental study of the modal filtering of a temporally chirped beam from a Ti:Sapphire chirped-pulseamplification system is presented. Beam profile, wavefront and pulse duration after compression were measured, showing a dramatic improvement of beam quality and no modifications of the temporal distribution. High-order harmonic generation in a rare gas, a highly nonlinear process which is phase-matching dependent, was used to test the effect of the filter and showed a clear enhancement of the generation.
Document type :
Journal articles
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-01245780
Contributor : Caroline Lebe <>
Submitted on : Thursday, December 17, 2015 - 4:14:32 PM
Last modification on : Saturday, September 19, 2020 - 4:47:26 AM

Identifiers

Citation

Benoît Mahieu, David Gauthier, Michel Perdrix, Xunyou Ge, Willem Boutu, et al.. Spatial quality improvement of a Ti:Sapphire laser beam by modal filtering. Applied Physics B - Laser and Optics, Springer Verlag, 2015, 118 (1), pp.47-60. ⟨10.1007/s00340-014-5953-4⟩. ⟨cea-01245780⟩

Share

Metrics

Record views

623