New adaptive optics control strategy for petawatt-class laser chains

Varkentina, Nadezda; Dovillaire, Guillaume; Legrand, J.; Beaugrand, Guillaume; Stefanon, Ilan; Treimany, Pauline; Lévecq, Xavier

doi:10.1070/qel16429

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…Recovering the phase distribution ϕ (x, y) of an unknown (transverse) optical field E (x, y) = A (x, y) exp [ıϕ (x, y)] from intensity signals only I (x, y) = |A (x, y)| 2 has been state of the art since the fundamental studies by Fienup et al [28] at the latest-in different variants [29] and commercial solutions for laser beam characterization [30]. The basis for this is the use of Fourier operators to wave optically predict light's propagation.…”

Section: Fundamentalsmentioning

confidence: 99%

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Phase retrieval algorithm applied to high-energy ultrafast lasers

Wang,

Ghazagh,

Ravi

et al. 2024

Appl. Opt.

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A standardized phase retrieval algorithm is presented and applied to an industry-grade high-energy ultrashort pulsed laser to uncover its spatial phase distribution. We describe in detail how to modify the well-known algorithm in order to characterize particularly strong light sources from intensity measurements only. With complete information about the optical field of the unknown light source at hand, virtual back propagation can reveal weak points in the light path such as apertures or damaged components.

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Section: Fundamentalsmentioning

confidence: 99%

“…2 (a) and (b). Using an ideal lens ( f = 300 mm) a set of 20 beam profiles is recorded in well-defined distances with respect to the local waist characterized by z R ≈ 5 mm (conform to the ISO standard at 20,30,50, 100] mm), cf. Fig.…”

Section: A Wavefront Aberrations From Zernike Polynomialsmentioning

confidence: 99%

Phase retrieval algorithm applied to high-energy ultrafast lasers

Wang,

Ghazagh,

Ravi

et al. 2024

Appl. Opt.

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“…Such devices could be used for beam stabilization on the target [13] or improving focusability of the laser beam by compensation of the large-and low-scale phase aberrations [14] . Active/adaptive optics (fast-steering mirrors [15,16] , wavefront correctors [17][18][19][20][21] , optomechanical nanopositioners [22] ) could be divided by the working principle as follows: piezoelectric (amplified [23][24][25] , non-amplified piezoactuators [26,27] , piezoplates [28,29] ), mechanical (stepper motors [30,31] ), electromagnetic (voice-coils [32] , MEMS [33] ) etc. [34][36] .…”

Section: Introductionmentioning

confidence: 99%

Stroke simulation of control elements in cartridge-type deformable mirror for correction of aberrations of laser radiation passed through turbulent medium

Toporovsky,

Kudryashov,

Samarkin

et al. 2023

29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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Necessity of miniaturize and to create reliable components for wavefront correctors leads to reduction of the cross-section of the control elements in deformable mirrors. Moreover, such elements should provide reasonable stroke to compensate for wavefront aberrations of the laser radiation propagated through turbulent atmosphere. In this work we simulated the possibility of reducing the cross-sectional area of piezoactuators from 16 mm2 to 5 mm2 in order to hold up the local stroke as 5 microns in the cartridge-type deformable mirror for correction of large- and small-scale phase fluctuations of laser radiation. To increase the reliability of deformable mirror design, the gap structure was used for wiring of electrodes instead of interdigitated commutation.

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“…The latter one can be achieved by utilizing a narrow band-pass filter before the sensor. Wavefront aberrations, thus SR (ω 0 ) in such a system can be reduced by using adaptive optics [36,76] capable of correcting the spatial phase of a given frequency component φ (x, y, ω 0 ). During numerical simulations, instead of the previous SR (ω) function, it would be more practical to express a SR which takes into account imperfect compressibility and quantifies the achievable peak intensity of the compressed pulses in the focal plane of a perfect focusing element.…”

Section: Strehl Ratiomentioning

confidence: 99%

Optimization of high peak power few-cycle optical parametric chirped pulse amplifier systems

Tóth

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OPCPA systems are capable of delivering high peak and average power pulses, consisting of only a few oscillation cycles of the electric field. The development of these systems are motivated by attosecond pulse generation and the examination of ultrafast physical processes. During my work I was using a 4D numerical code for the modelleding of OPCPA. I have examined a few OPA arrangements, which can increase the efficiency of the amplification process and the bandwidth of the amplified pulses. I have numerically optimized the OPCPA of the ELI-ALPS SYLOS system and carried out a comparative study of a mid-IR OPCPA system.

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New adaptive optics control strategy for petawatt-class laser chains

Cited by 5 publications

References 2 publications

Phase retrieval algorithm applied to high-energy ultrafast lasers

Phase retrieval algorithm applied to high-energy ultrafast lasers

Stroke simulation of control elements in cartridge-type deformable mirror for correction of aberrations of laser radiation passed through turbulent medium

Optimization of high peak power few-cycle optical parametric chirped pulse amplifier systems

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