2002
DOI: 10.1364/ol.27.001570
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Correction of strong phase and amplitude modulations by two deformable mirrors in a multistaged Ti:sapphire laser

Abstract: We describe a novel scheme consisting of two deformable bimorph mirrors that can free ultrashort laser pulses from simultaneously present strong wave-front distortions and intensity-profile modulations. This scheme is applied to the Max-Planck-Institut für Quantenoptik 10-TW Advanced Titanium-Sapphire Laser (ATLAS) facility. We demonstrate that with this scheme the focusability of the ATLAS pulses can be improved from 10(18) to 2x10(19) W/cm(2) without any penalty in recompression fidelity.

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Cited by 47 publications
(19 citation statements)
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“…The annular depression had radii of 2.87 mm by 0.93 mm. Even this very coarse approximation led to a super-Gaussian mode of order Set of parameters used for the numerical simulation FIGURE 6 Numerical simulation of the thermally induced deformation of a 1-mm Sylgard layer. The height is magnified 10 3 times…”
Section: Figurementioning
confidence: 99%
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“…The annular depression had radii of 2.87 mm by 0.93 mm. Even this very coarse approximation led to a super-Gaussian mode of order Set of parameters used for the numerical simulation FIGURE 6 Numerical simulation of the thermally induced deformation of a 1-mm Sylgard layer. The height is magnified 10 3 times…”
Section: Figurementioning
confidence: 99%
“…However, currently known adaptive optical systems such as deformable mirrors with piezo-actuators [5,6] and electrou Fax: +41-31/631-3765, E-mail: hoeudae@yahoo.com statically deformable membrane mirrors [7,8] are not suited for intra-cavity beam control of lasers in the visible and nearinfrared spectral region. Either they cannot be modulated with sufficient spatial resolution or they cannot withstand the power levels reached in modern laser systems.…”
Section: Introductionmentioning
confidence: 99%
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“…In order to meet this goal, it is not enough to limit wavefront distortions of subsystem in ICF laser facility only, and a wavefront control system is needed. Adaptive optics (AO) is considered as one of the most competitive candidates to effectively control wavefront distortions in high power laser, such as NIF (National Ignition Facility), LMJ (Laser Megajoule) and so on [3][4][5][6] . In these AO systems, the deformable mirror (DM) is mounted on cavity end, and the Hartmann-Shack wavefront sensor (WFS) is located in output sensor package (OSP).…”
mentioning
confidence: 99%
“…However, high-power Ti:sapphire laser systems suffer from wavefront aberrations due to imperfections in the optical components, and pumpinduced thermal distortions in the amplifiers. Although thermal distortions can be reduced by cooling the Ti:sapphire crystal, an accurate correction of wavefront aberrations needs a more versatile approach usually based on adaptive optics [12,13].…”
mentioning
confidence: 99%