التفاصيل البيبلوغرافية
| العنوان: |
Theoretical study on the mechanisms of ultrasonic modulation of multiply scattered light |
| المؤلفون: |
Wang, Lihong V. |
| المساهمون: |
Oraevsky, Alexander A. |
| المصدر: |
BIOS 2001: The International Symposium on Biomedical Optics, San Jose, CA, 20-26 January 2001 |
| بيانات النشر: |
Society of Photo-optical Instrumentation Engineers (SPIE) |
| سنة النشر: |
2001 |
| المجموعة: |
Caltech Authors (California Institute of Technology) |
| مصطلحات موضوعية: |
ultrasonic modulation, optical speckles, multiple scattering, scattering media, random media, turbid media, wave propagation, coherent light, tissue optics, acousto-optics |
| الوصف: |
An analytic model of the ultrasonic modulation of multiply scattered coherent light in scattering media is provided. The model is based on two mechanisms: the ultrasonic modulation of the index of refraction, which causes a modulation of the optical path lengths between consecutive scattering events, and the ultrasonic modulation of the displacements of Rayleigh scatterers, which causes a modulation of optical path lengths upon each scattering event. Multiply scattered light accumulates modulated optical path lengths along its path. Consequently, the intensity of the speckles that are formed by the multiply scattered light is modulated. In water solutions, for example, the contribution from the index of refraction is slightly less than the contribution from displacement when the scattering mean free path is less than a critical fraction of the acoustic wavelength, and it becomes increasingly greater than the contribution from displacement beyond this critical point. ; © 2001 Society of Photo-Optical Instrumentation Engineers (SPIE). This project was sponsored in part by National Science Foundation grant BES-9734491, Texas Higher Education Coordinating Board grant 000512-0123-1999, and National Institutes of Health grants R29 CA68562 and R01 CA71980. ; Published - 208.pdf |
| نوع الوثيقة: |
book part |
| اللغة: |
unknown |
| العلاقة: |
https://doi.org/10.1117/12.429309Test; oai:authors.library.caltech.edu:wpcgj-b9q86; eprintid:91599; resolverid:CaltechAUTHORS:20181207-161547607 |
| DOI: |
10.1117/12.429309 |
| الإتاحة: |
https://doi.org/10.1117/12.429309Test |
| حقوق: |
info:eu-repo/semantics/openAccess ; Other |
| رقم الانضمام: |
edsbas.209E3DF5 |
| قاعدة البيانات: |
BASE |
