title: High-efficiency, broad band, high-damage threshold high-index gratings for femtosecond pulse compression.
abstract: 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.
authors: Frederico
authors: F
authors: Canova
authors: Raphael
authors: R
authors: Clady
authors: Jean-Paul
authors: JP
authors: Chambaret
authors: Manuel
authors: M
authors: Flury
authors: Svtelen
authors: S
authors: Tonchev
authors: Renate
authors: R
authors: Fechner
authors: Olivier
authors: O
authors: Parriaux