Resonant grating pulse compression element with 99% flat top efficiency for high average power femtosecond laser machining

Manuel Flury (1) , Nikolay Lyndin (1) , Renate Fechner (2) , Axel Schindler , Svetlen Tonchev (1) , Michel Spajer (3) , Youcef Ouerdane (1) , Nathalie Destouches (1) , David Pietroy (1) , Stéphanie Reynaud (1) , And Olivier Parriaux (1)

1 LHC - Laboratoire Hubert Curien
2 Institute of Surface Modification
3 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)

Top hat diffraction efficiency in an all-dielectric SiO2/HfO2 grating femtosecond pulse compression grating is demonstrated with a close to 100% flat top over more than 20 nm around 800 nm wavelength. New perspectives are open for high average power femtosecond laser machining.

Domaines: Optique [physics.optics]

Manuel Flury, Nikolay Lyndin, Renate Fechner, Axel Schindler, Svetlen Tonchev, et al.. Resonant grating pulse compression element with 99% flat top efficiency for high average power femtosecond laser machining. Photonics Europe, Apr 2007, France. pp.436-442, ⟨10.1117/12.668374⟩. ⟨ujm-00122927⟩