Obtaining photon transit time distribution of diffuse media using laser speckle statistics for imaging applicatlons

Author

Webster, M.A. ; Mckinney, J.D. ; Weiner, Andrew M. ; Webb, Kevin J.

Author_Institution

Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

fYear

2000

fDate

7-12 May 2000

Firstpage

561

Lastpage

562

Abstract

Summary form only given.Optical diffusion tomography typically uses a low coherence source, such as an LED, whose output intensity is sinusoidally modulated, and involves a coherent detection scheme at this modulation frequency. These measurements yield the frequency domain representation of the photon transit time distribution for travel through a scattering medium. Inversion of this data, based upon a diffusion equation model for the medium, is performed to reconstruct the imaging domain.

Keywords

image processing; light scattering; measurement by laser beam; optical tomography; semiconductor lasers; speckle; LED; coherent detection scheme; diffuse media; diffusion equation model; frequency domain representation; imaging applications; imaging domain reconstruction; laser speckle statistics; low coherence source; modulation frequency; output intensity; photon transit time distribution; scattering medium; sinusoidally modulated; Coherence; Frequency domain analysis; Frequency measurement; Frequency modulation; Intensity modulation; Light emitting diodes; Optical modulation; Optical scattering; Time measurement; Tomography;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

1-55752-634-6

Type

conf

DOI

10.1109/CLEO.2000.907390

Filename

907390