期刊
FRONTIERS IN PHYSICS
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2021.650537
关键词
tissue turbulence; beam quality; average intensity; Hermite-Gaussian correlated Schell-model beam; propagation factor
资金
- National Natural Science Foundation of China [61675159]
- Natural Science Foundation of Shaanxi Province [2020JM-210]
The study analyzes the propagation characteristics of a Hermite-Gaussian correlated Schell-model (HGCSM) beam in biological tissue turbulence, investigating factors such as beam orders and coherence width. It was found that the larger the beam orders and fractal dimension, or the smaller the coherence width, the better the beam quality in turbulence. Additionally, HGCSM beams are less affected by turbulence compared to Gaussian Schell-model beams.
The propagation characteristics of a Hermite-Gaussian correlated Schell-model (HGCSM) beam in the turbulence of biological tissue are analyzed. The average intensity, spectral degree of coherence, and the dependence of the propagation factors on the beam orders, transverse coherence width, fractal dimension, characteristic length of heterogeneity, and small length-scale factor are numerically investigated. It is shown that the HGCSM beam does not exhibit self-splitting properties on propagation in tissues due to the strong turbulence in the refractive index of biological tissue. The larger the beam orders, the fractal dimension, and the small length-scale factor are, or the smaller the transverse coherence width and the characteristic length of heterogeneity are, the smaller the normalized propagation factor is, and the better the beam quality of HGCSM beams in turbulence of biological tissue is. Moreover, under the same condition, the HGCSM beam is less affected by turbulence than of Gaussian Schell-model (GSM) beam. It is expected that the results obtained in this paper may be useful for the application of partially coherent beams in tissue imaging and biomedical diagnosis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据