Thin-disk laser with Bessel-like output beam: theory and simulations

Aghbolaghi, Reza; Batebi, S.; Sabaghzadeh, J.

doi:10.1364/ao.52.000683

Cited by 6 publications

(1 citation statement)

References 36 publications

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“…Here, n is the refractive index of the axicon. Further, thin-disc [164,165] and unstable [166,167] laser cavity configurations are also theoretically demonstrated for the generation of BB. The cavity configuration shown in figure 29(c) was used by Uehara and Kikuchi to produce nearly diffraction-free beams.…”

Section: Direct Generation Of Bessel Beams From the Lasermentioning

confidence: 99%

A conceptual review on Bessel beams

Rao

2024

Phys. Scr.

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Over the past 36 years much research has been carried out on Bessel beams (BBs) owing to their peculiar properties, viz non-diffraction behavior, self-healing nature, possession of well-defined orbital angular momentum with helical wave-front, and realization of smallest central lobe. Here, we provide a detailed review on BBs from their inception to recent developments. We outline the fundamental concepts involved in the origin of the BB. The theoretical foundation of these beams was described and then their experimental realization through different techniques was explored. We provide an elaborate discussion on the different kinds of structured modes produced by the BB. The advantages and challenges that come with the generation and applications of the BB are discussed with examples. This review provides reference material for readers who wish to work with non-diffracting modes and promotes the application of such modes in interdisciplinary research areas.

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Section: Direct Generation Of Bessel Beams From the Lasermentioning

confidence: 99%

A conceptual review on Bessel beams

Rao

2024

Phys. Scr.

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Self-consistency equations in axicon-based thin-disk laser resonators

2023

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Spatial filtering and optimal generation of high-flux soft x-ray high harmonics using a Bessel–Gauss beam

Tang,

Wang,

et al. 2024

Applied Physics Reviews

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In recent years, significant advancements in high-repetition-rate, high-average-power mid-infrared laser pulses have enabled the generation of tabletop high-flux coherent soft x-ray harmonics for photon-hungry experiments. However, for practical applications, it is crucial to effectively filter out the driving beam from the high harmonics. In this study, we leverage the distinctive properties of a Bessel–Gauss (BG) beam to introduce a novel approach for spatial filtering, specifically targeting soft x-ray harmonics, releasing with a high-photon flux simultaneously. Our simulations reveal that by finely adjusting the focus geometry and gas pressure, the BG beam naturally adopts an annular shape, emitting high harmonics with minimal divergence in the far field. To achieve complete spatial separation of the driving beam and harmonic emissions, we pinpoint the optimal gas pressure and focusing geometry, particularly under overdriven laser intensities, for achieving good phase matching of harmonic emissions from short-trajectory electrons within the gas medium when the exact ionization level is higher than the “critical” value. Additionally, we establish scaling relations for sustaining optimal phase-matching conditions crucial for spatially separating the driving laser and the high-harmonic field, especially as the wavelength of the driving laser increases. Furthermore, our analysis demonstrates a substantial enhancement of harmonic yields by at least one order of magnitude compared to a truncated Gaussian annular beam. We also show that under accessible experimental conditions, soft x-ray photon flux up to 1010 photons/s at 250 eV can be achieved. The utilization of the BG beam opens up a promising pathway for the development of high-flux attosecond soft x-ray light sources, poised to serve a wide range of applications.

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Thin-disk laser with Bessel-like output beam: theory and simulations

Cited by 6 publications

References 36 publications

A conceptual review on Bessel beams

A conceptual review on Bessel beams

Self-consistency equations in axicon-based thin-disk laser resonators

Spatial filtering and optimal generation of high-flux soft x-ray high harmonics using a Bessel–Gauss beam

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