2021/11/29 by Nooshin M. Estakhri, Estakhri, Nooshin M., Nasim Mohammadi Estakhri +3
Earth and Planetary Sciences · Physics and Astronomy · #Classical Physics (physics.class-ph) #FOS: Physical sciences #Ocean Waves and Remote Sensing #Optics (physics.optics) #Random lasers and scattering media #Underwater Acoustics Research
paper · pdf · doi:10.48550/arxiv.2111.15007
openalex publication_date 2021/11/29 · openalex created_date 2022/11/27 · openalex updated_date 2026/07/28
Coherent backscattering (CBS) arises from complex interactions of a coherent beam with randomly positioned particles, which has been typically studied in media with large numbers of scatterers and high opacity. We develop a first-principles scattering model for scalar waves to study the CBS cone formation in finite-sized and sparse random media with specific geometries. The results provide new insights into the effects of density, volume size, and other relevant parameters on the angular characteristics of the CBS cone emerging from bounded random media for various types of illumination. This work also highlights some of the potentials and limitations of employing the coherent backscattering phenomenon to characterize disordered configurations. The method developed here provides a foundation for studies of the multiple scattering of complex electromagnetic fields in randomized geometries, including quantized fields for investigating the effects of the quantum nature of light in multiple scattering.