Frequency shifting of light via multiple ultrasound waves in scattering media

被引:0
作者
Kinos, Adam [1 ,2 ]
机构
[1] Lund Univ, Dept Phys, POB 118, SE-22100 Lund, Sweden
[2] Deep Light Vis AB, Gasverksgatan 3A, SE-22929 Lund, Sweden
来源
BIOMEDICAL OPTICS EXPRESS | 2024年 / 15卷 / 12期
关键词
TURBID MEDIA; TOMOGRAPHY; MODULATION;
D O I
10.1364/BOE.541721
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
We derive analytical expressions to describe how light is frequency-shifted when interacting with ultrasound within scattering media, due to the modulation of the refractive index induced by the ultrasound pressure waves. The model is validated through Monte Carlo simulations, works for high ultrasound pressures, and allows for many simultaneous ultrasound waves or frequency components, which is important due to the non-linear propagation effects in tissue. We also provide critical insights into how the ultrasound properties can be optimized for an enhanced efficiency of the light to be frequency-shifted, facilitating applications in ultrasound optical tomography and other photonic diagnostic techniques.
引用
收藏
页码:7066 / 7076
页数:11
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