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Mixed metal dielectric gratings for pulse compression

Jérôme Neauport 1, * N Bonod 2 S Hocquet 1 S Palmier 1 G Dupuy 1 
Abstract : We report on manufacturing and testing results of high efficiency mixed metal dielectric gratings (MMLD) for high power pulse compression applications. The gratings with 1780 l/mm are etched in the top low index layer of a Au-(SiO 2 /HfO 2) 4-SiO 2 mirror stack. Various grating profiles manufactured in order to modify the near electric field distribution are damage tested on a facility operating at 1.053 µm, 500 fs pulse duration. We evidence that damage threshold is governed by the value of the maximum electric field intensity inside the grating pillar. Moreover thresholds close to 3 J/cm 2 beam normal are obtained with this new MMLD grating being thus an interesting alternative to gold and pure dielectric gratings for pulse compression applications.
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Submitted on : Sunday, October 18, 2015 - 10:40:07 PM
Last modification on : Wednesday, November 3, 2021 - 4:48:04 PM
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Jérôme Neauport, N Bonod, S Hocquet, S Palmier, G Dupuy. Mixed metal dielectric gratings for pulse compression. Optics Express, Optical Society of America - OSA Publishing, 2010, 18, pp.23776-23783. ⟨10.1364/OE.18.023776⟩. ⟨cea-01217072⟩



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