Temporal visualization of femtosecond laser pulses with single-edge transport in turbid media via Monte Carlo simulation

Ren, Yuhu; Jian, Jimo; Tan, Wenjiang; Wang, Jing; Chen, Tao; Xia, Wei

doi:10.1364/ol.423483

Cited by 4 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here, the polarization sensitive MC method is used to study the interaction of light fields and the polarization state transition mechanism through highly turbid media. The method used in our simulation is with the polarization information based on the classical MC model of light transport in multi-layered tissues and the volumetric turbid media [30,31].…”

Section: Introductionmentioning

confidence: 99%

Polarization state transition mechanism of light through turbid media by Monte Carlo simulation

Ren,

Jian,

Tan

et al. 2024

Laser Phys.

Self Cite

View full text Add to dashboard Cite

We study the propagation of polarized light through turbid media with high scattering coefficient (μ s = 50 cm−1) and disclose the physical processes involved in the evolution of Stokes vector. The results show that the components of the Stokes vector can be expressed as the superimposition of the generalized divergence and the generalized curl of the two orthogonal electric field vectors. The components I, Q, and U can be represented as the superimposition of the generalized divergence. The components V can be conveyed as the superimposition of the generalized curl omitting the direction. Further, the depolarization of the linearly polarized light corresponds to the alteration of the generalized divergence, while the depolarization of the circularly polarized light coincides with the variability of the generalized curl omitting the direction. The evolutions of the scattering electric fields arise from the scattering of the particles, followed by the polarization state transition of the incident light and the change of the scattering phase function. Further, the circularly polarized light can preserve the polarization state better than that of the linearly polarized light with an increase of the thickness of the scattering volume.

show abstract

Section: Introductionmentioning

confidence: 99%

Polarization state transition mechanism of light through turbid media by Monte Carlo simulation

Ren,

Jian,

Tan

et al. 2024

Laser Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this paper, we study the transition from the ballistic to the snake regime of a femtosecond laser through a turbid medium via Monte Carlo simulation. The Monte Carlo method used in our simulation is with a time-resolved character based on the classical Monte Carlo model of steady state light transport in multi-layered tissues [19,23]. The scattering order of the photons can also be recorded to discern the ballistic photons and other photons in the simulation.…”

Section: Introductionmentioning

confidence: 99%

Transition from the ballistic to the snake regime of a femtosecond laser through a turbid medium via Monte Carlo simulation

Ren¹,

Jian²,

Tan³

et al. 2022

Laser Phys. Lett.

Self Cite

View full text Add to dashboard Cite

We study the transition from the ballistic to the snake regime of a femtosecond laser through a turbid medium via Monte Carlo simulation. The results show that the transition depth of the ballistic to the snake regime of a femtosecond laser through a turbid medium is close to the surface of the scattering volume. The transition process depends on the scattering coefficient of the turbid medium. Unlike the decay of the intensities of the ballistic photons governed by Beer–Lambert law, the intensities of the snake photons first increase with an increase of the thickness of the turbid medium and then decrease with a further increase of the thickness, for all scattering coefficients ranging from 10 to 20 cm−1. Further, we study the balance point of the intensity of the ballistic photons and the snake photons, which also depends on the scattering coefficient and the half-acceptance angle. The transmission depth corresponding to the transition balance point decreases with an increase of the scattering coefficient. In addition, for the transition balance point, the product of the transmission depth and scattering coefficient is approximately a constant (∼2) for a specific simulation configuration.

show abstract

Single-shot decoherence polarization gated imaging through turbid media

Ren

Jian

Tan

et al. 2023

Review of Scientific Instruments

View full text Add to dashboard Cite

We propose a method for imaging through a turbid medium by using a single-shot decoherence polarization gate (DPG). The DPG is made up of a polarizer, an analyzer, and a weakly scattering medium. Contrary to intuition, we discover that the preferential utilization of sparsely scattered photons by introducing weakly scattering mediums can lead to better image quality. The experimental results show that the visibilities of the images acquired from the DPG imaging method are obviously improved. The contrast of the bar can be increased by 50% by the DPG imaging technique. Furthermore, we study the effect of the volume concentration of the weakly scattering medium on the speckle suppression and the enhancement of the visibilities of the images. The variances of the contrasts of the image show that there exists an optimum optical depth (∼0.8) of the weakly scattering medium for DPG imaging through a specific turbid medium.

show abstract

Temporal visualization of femtosecond laser pulses with single-edge transport in turbid media via Monte Carlo simulation

Cited by 4 publications

References 24 publications

Polarization state transition mechanism of light through turbid media by Monte Carlo simulation

Polarization state transition mechanism of light through turbid media by Monte Carlo simulation

Transition from the ballistic to the snake regime of a femtosecond laser through a turbid medium via Monte Carlo simulation

Single-shot decoherence polarization gated imaging through turbid media

Contact Info

Product

Resources

About