Open AccessHigh-efficiency, broad band, high-damage threshold high-index gratings for femtosecond pulse compression
Author(s) -
F. Canova,
R. Clady,
Jean-Paul Chambaret,
Manuel Flury,
S. Tonchev,
Renate Fechner,
Ο. Parriaux
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.015324
Subject(s) - materials science , optics , diffraction efficiency , femtosecond , dielectric , diffraction grating , laser , chirped pulse amplification , optoelectronics , wavelength , polarization (electrochemistry) , pulse compression , diffraction , slope efficiency , grating , fiber laser , physics , telecommunications , radar , chemistry , computer science
High efficiency, broad-band TE-polarization diffraction over a wavelength range centered at 800 nm is obtained by high index gratings placed on a non-corrugated mirror. More than 96% efficiency wide band top-hat diffraction efficiency spectra, as well as more than 1 J/cm(2) damage threshold under 50 fs pulses are demonstrated experimentally. This opens the way to high-efficiency Chirped Pulse Amplification for high average power laser machining by means of all-dielectric structures as well as for ultra-short high energy pulses by means of metal-dielectric structures.