Large area high efficiency broad bandwidth 800 nm dielectric gratings for high energy laser pulse compression.
Opt Express
; 17(26): 23809-16, 2009 Dec 21.
Article
em En
| MEDLINE
| ID: mdl-20052091
ABSTRACT
We have demonstrated broad bandwidth large area (229 mm x 114 mm) multilayer dielectric diffraction gratings for the efficient compression of high energy 800 nm laser pulses at high average power. The gratings are etched in the top layers of an aperiodic (Nb0.5Ta0.5)2O5-SiO2 multilayer coating deposited by ion beam sputtering. The mean efficiency of the grating across the area is better than 97% at the center wavelength and remains above 96% at wavelengths between 820 nm and 780 nm. The gratings were used to compress 5.5 J pulses from a Tisapphire laser with an efficiency above 80 percent.
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1
Base de dados:
MEDLINE
Assunto principal:
Refratometria
/
Iluminação
/
Lasers
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article