High-efficiency, broad band, high-damage threshold high-index gratings for femtosecond pulse compression

High-efficiency, broad band, high-damage threshold high-index gratings for femtosecond pulse compression

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...

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Veröffentlicht in:Optics express 2007-11, Vol.15 (23), p.15324-15334
Hauptverfasser: Canova, Frederico, Clady, Raphael, Chambaret, Jean-Paul, Flury, Manuel, Tonchev, Svtelen, Fechner, Renate, Parriaux, Olivier
Format: Artikel
Sprache:eng
Schlagworte:
Engineering Sciences
Optics
Photonic
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Zusammenfassung: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.15.015324