title: Highly efficient transmission gratings in fused silica for chirped-pulse amplification systems.
abstract: We report on highly efficient transmission gratings in fused silica with a grating period of 800 nm generated by electron-beam lithography. At a wavelength of 1060 nm, 95% diffraction efficiency is achieved under Littrow conditions. The damage threshold, extremely enhanced compared with conventional gold-coated diffraction gratings, makes these gratings the key elements in high average power (>100 W) femtosecond fiber chirped-pulse amplification systems.
authors.affiliation: Institute of Applied Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, Jena 07743, Germany. clausnitzer@iap.uni-jena.de
authors.forename: Tina
authors.initials: T
authors.lastname: Clausnitzer
authors.forename: Jens
authors.initials: J
authors.lastname: Limpert
authors.forename: Karsten
authors.initials: K
authors.lastname: Zöllner
authors.forename: Holger
authors.initials: H
authors.lastname: Zellmer
authors.forename: Hans-Joerg
authors.initials: HJ
authors.lastname: Fuchs
authors.forename: Ernst-Bernhard
authors.initials: EB
authors.lastname: Kley
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann
authors.forename: Marco
authors.initials: M
authors.lastname: Jupé
authors.forename: Detlev
authors.initials: D
authors.lastname: Ristau