High reflection mirrors for pulse compression gratings
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An experimental investigation of high reflection mirrors used to fabricate gratings for pulse compression application at the wavelength of 1.053microm evidences that MMLD design can offer damage performances rather similar to MLD design, it also exhibits lower stresses; being thus an optimal mirror substrate for a pulse compression grating operating under vacuum.Abstract:
We report an experimental investigation of high reflection mirrors used to fabricate gratings for pulse compression application at the wavelength of 1.053microm. Two kinds of mirrors are studied: the mixed Metal MultiLayer Dielectric (MMLD) mirrors which combine a gold metal layer with some e-beam evaporated dielectric bilayers on the top and the standard e-beam evaporated MultiLayer Dielectric (MLD) mirrors. Various samples were manufactured, damage tested at a pulse duration of 500fs. Damage sites were subsequently observed by means of Nomarski microscopy and white light interferometer microscopy. The comparison of the results evidences that if MMLD design can offer damage performances rather similar to MLD design, it also exhibits lower stresses; being thus an optimal mirror substrate for a pulse compression grating operating under vacuum.read more
Citations
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Diffraction gratings: from principles to applications in high-intensity lasers
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TL;DR: In this article, the authors review the physics of diffraction gratings and detail the interest in them for pulse compression of high-power laser systems, showing that the unique spectral properties of these gratings revolutionized the field of high energy laser systems.
Journal ArticleDOI
Mixed metal dielectric gratings for pulse compression
TL;DR: Results show that damage threshold is governed by the value of the maximum electric field intensity inside the grating pillar, and thresholds close to 3 J/cm2 beam normal are obtained with this new MMLD grating being thus an interesting alternative to gold and pure dielectric gratings for pulse compression applications.
Journal ArticleDOI
A theoretical investigation of the laser damage threshold of metal multi-dielectric mirrors for high power ultrashort applications
Bin Wang,Laurent Gallais +1 more
TL;DR: An approach for the theoretical evaluation of the damage threshold in optical interference coatings that combine metal and dielectric films is presented and the impact of the metal film and the design on the Laser Induced Damage Threshold in the sub picosecond regime is studied.
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Broadband pulse compression gratings with measured 99.7% diffraction efficiency
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Design and analysis of broadband high-efficiency pulse compression gratings
TL;DR: Two effective methods, multiparameter optimization and local optimization combined with the diffraction bandwidth merit function, are reported on to design a broadband pulse compression grating (PCG) and a novel multilayer structure is first proposed to yield higher average efficiency, broader bandwidth, and excellent fabrication tolerance.
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