Zemax ray tracing model for plasma waveguides

Bisesto, F.; Galletti, Mario; Curcio, A.

doi:10.1088/1612-202x/ab6bd3

Cited by 4 publications

(1 citation statement)

References 33 publications

(36 reference statements)

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“…A non-sequential bulk scatter model was established to simulate the scattering of the expanded laser beam as it passed through the solution containing particles [36,37]. The simulation parameters were set as follows: the wavelength of the laser beam was 632.8 nm, the number of analyzed rays was 10,000, the scattering area was a rectangular volume (20 × 20 × 10 mm), the refractive index of the filling material (oleic acid) in the rectangle volume was 1.4585, the refractive index of the particle (polystyrene microsphere) was 1.60, and the particle diameter was 10 microns.…”

Section: Relationship Between Random Speckle Pattern and Particle Con...mentioning

confidence: 99%

Self-Modulated Ghost Imaging in Dynamic Scattering Media

Yu,

Hou,

Hou

et al. 2023

Sensors

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In this paper, self-modulated ghost imaging (SMGI) in a surrounded scattering medium is proposed. Different from traditional ghost imaging, SMGI can take advantage of the dynamic scattering medium that originally affects the imaging quality and generate pseudo-thermal light through the dynamic scattering of free particles’ Brownian motion in the scattering environment for imaging. Theoretical analysis and simulation were used to establish the relationship between imaging quality and particle concentration. An experimental setup was also built to verify the feasibility of the SMGI. Compared with the reconstructed image quality and evaluation indexes of traditional ghost imaging, SMGI has better image quality, which demonstrates a promising future in dynamic high-scattering media such as dense fog and turbid water.

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Section: Relationship Between Random Speckle Pattern and Particle Con...mentioning

confidence: 99%

Self-Modulated Ghost Imaging in Dynamic Scattering Media

Yu,

Hou,

Hou

et al. 2023

Sensors

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Direct refractive index retrieval from interferometry measurements

Galletti

Künzel²,

Alves³

et al. 2020

Review of Scientific Instruments

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We present an alternative numerical method to the Abel inversion technique, which can be applied to complex non-symmetrical systems. A comparison with the Abel inversion algorithm was conducted. For benchmarking, the method was applied to a synthetic trace representing a plasma waveguide characterized by a constant parabolic density profile. Furthermore, the temperature and refractive index of a plume of hot air surrounding a non-cylindrical soldering iron were retrieved. Temperatures between 50 °C and 200 °C were successfully retrieved within the instrument precision. The proposed method allows robust and fast data retrieval while maintaining the accuracy and resolution of well-known methods, as Abel inversion.

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Plasma density profile measurements for ultra-short high power laser beam guiding experiments at SPARC _LAB

Costa

Anania

Biagioni

et al. 2020

J. Phys.: Conf. Ser.

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External injection is a promising method to achieve high accelerating gradients and to control the beam properties. The energy gain of an electron via the wakefield is proportional to the product of the accelerating field multiplied by the effective propagation distance of the laser. Therefore, in order to bring the electron energy in the order of the GeV, a longer propagation length is required, which can be obtained by guiding the laser pulse in a wave-guide. In the case of SPARC_LAB, a 500 μτη diameter hydrogen-filled capillary discharge is used; to guide the laser beam it is necessary to act on the refractive index of the plasma, depending on its density. In this work measurements of the trend over time of the longitudinal profile of the plasma density within the capillary are presented, along with openFOAM simulations of the gas profile distribution. Preliminary test of laser guiding are also shown, detecting the behaviour of the laser beam at the exit of the capillary with respect to the discharge current value.

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Zemax ray tracing model for plasma waveguides

Cited by 4 publications

References 33 publications

Self-Modulated Ghost Imaging in Dynamic Scattering Media

Self-Modulated Ghost Imaging in Dynamic Scattering Media

Direct refractive index retrieval from interferometry measurements

Plasma density profile measurements for ultra-short high power laser beam guiding experiments at SPARC _LAB

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