Toothed apodizing stops with high radiation strength

Бельков, С. А.; Voronich, I. N.; Гаранин, С. Г.; Zimalin, B. G.

doi:10.1364/jot.83.000113

Cited by 3 publications

(12 citation statements)

References 11 publications

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“…The results of studies of the formation of the spatial profile of a single beam by a stop with sharp edges showed that an apodized beam can be formed with no appreciable spatial intensity inhomogeneities at a small radiation-selection angle θ sel 1.5θ difr , 7 where θ difr is the diffraction-divergence angle of the beam. At other selection angles that were considered, the peak energy density in the beam significantly exceeds the mean value over the aperture.…”

Section: An Array Of Stops With Sharp Edgesmentioning

confidence: 99%

“…7 In this connection, the given type of serrated stops in an aperture-partitioning system was investigated only for θ sel 6θ difr .…”

Section: An Array Of Serrated Stops With Rectangular Serrationsmentioning

confidence: 99%

“…7 In actual laser systems, the selection angle needs to be reduced as much as possible, since this increases the efficiency of the optical decoupling between the stages and smoothes out various kinds of spatial-angular inhomogeneities in the beam. Starting from this, the minimum selection angle of 36θ difr was selected from the allowable range.…”

Section: An Array Of Serrated Stops With Triangular Serrationsmentioning

confidence: 99%

“…The ratio of the peak energy density to the mean value in the beams coincides with the corresponding values obtained for a single-beam system. 7 As the beam moves away from the image-reconstruction plane of the serrated stops, zones of increased intensity whose size increases as the beam propagates are formed in the near field at the edges of the beam aperture. The excess of the peak energy density over the mean value is δ 1.5% at ΔL 0 cm, δ 4% at ΔL 10 cm, δ 8% at ΔL 20 cm, δ 10% at ΔL 30 cm, δ 11% at ΔL 40 cm, and δ 13% at ΔL 50 cm and also corresponds to the values obtained for a single-beam system.…”

Section: An Array Of Serrated Stops With Triangular Serrationsmentioning

confidence: 99%

“…The results of studies of the apodization of a single laser beam by aperture stops with similar types of serrated structures are presented in Ref. 7.…”

Section: Introductionmentioning

confidence: 99%

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Aperture partitioning of a light beam in high-power installations for laser thermonuclear synthesis

et al. 2015

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A calculational and experimental study has been carried out for the spatial intensity profiles of laser beams formed at the output of an aperture-partitioning system using serrated apodizing stops with various types of serrated structures. Arrays of 2 × 2 and 1 × 2 beams with square and rectangular apertures are obtained, and it is experimentally shown that apodized beams can be formed with a high fill factor and an excess of the peak energy density relative to the mean value of no more than 1%.

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Section: An Array Of Stops With Sharp Edgesmentioning

confidence: 99%

“…7 In this connection, the given type of serrated stops in an aperture-partitioning system was investigated only for θ sel 6θ difr .…”

Section: An Array Of Serrated Stops With Rectangular Serrationsmentioning

confidence: 99%

Section: An Array Of Serrated Stops With Triangular Serrationsmentioning

confidence: 99%

Section: An Array Of Serrated Stops With Triangular Serrationsmentioning

confidence: 99%

“…The results of studies of the apodization of a single laser beam by aperture stops with similar types of serrated structures are presented in Ref. 7.…”

Section: Introductionmentioning

confidence: 99%

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Aperture partitioning of a light beam in high-power installations for laser thermonuclear synthesis

et al. 2015

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eXawatt Center for Extreme Light Studies

Khazanov,

Shaykin,

Kostyukov

et al. 2023

High Pow Laser Sci Eng

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The eXawatt Center for Extreme Light Studies project aimed to create a large scientific infrastructure based on lasers with giant peak power. The project relies on the significant progress achieved in the last decade. The planned infrastructure will incorporate a unique light source with a pulse power of 600 PW using optical parametric chirped pulse amplification in large-aperture KD 2 PO 4 , deuterated potassium dihydrogen phosphate crystals. The interaction of such laser radiation with matter represents a completely new fundamental physics. The direct study of the space-time structure of vacuums and other unknown phenomena at the frontier of high-energy physics and the physics of superstrong fields will be challenged. Expected applications will include the development of compact particle accelerators, the generation of ultrashort pulses of hard X-ray and gamma radiation for material science enabling one to probe material samples with unprecedented spatial and temporal resolution, the development of new radiation and particle sources, etc. The paper is translation from Russian [Kvantovaya Elektronika 53, 95 (2023)].

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Laser beam shaping in an apodizer with a rectangular serrated aperture

Sizova¹

2023

Computer Optics

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Profile transformation of a uniform monochromatic beam with a flat wavefront after the propagation through an apodizer comprising a square serrated aperture and a spatial filter is theoretically considered at the apodizer exit and behind it. Main differences from the case of the circular apodizer geometry are shown. Roles of the square serrated aperture angles, the phase in Fresnel diffraction, the shape of the aperture serrations and serration height-to-period ratio are analyzed.

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Toothed apodizing stops with high radiation strength

Cited by 3 publications

References 11 publications

Aperture partitioning of a light beam in high-power installations for laser thermonuclear synthesis

Aperture partitioning of a light beam in high-power installations for laser thermonuclear synthesis

eXawatt Center for Extreme Light Studies

Laser beam shaping in an apodizer with a rectangular serrated aperture

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