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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Bibliographic Details
Published inOptics express Vol. 15; no. 23; pp. 15324 - 15334
Main Authors Canova, Frederico, Clady, Raphael, Chambaret, Jean-Paul, Flury, Manuel, Tonchev, Svtelen, Fechner, Renate, Parriaux, Olivier
Format Journal Article
LanguageEnglish
Published United States Optical Society of America - OSA Publishing 12.11.2007
Subjects
Engineering Sciences
Optics
Photonic
Ultrafast lasers
Waveguides
Guided waves
Gratings
Pulse compression
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Summary: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.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.15.015324