Variable coherence in determining the scattering parameters of diffuse media using laser speckle

Summary form only given. We demonstrate the application of a variable-coherence laser source for determining the scattering parameters of a diffuse medium and the potential for imaging spatially-dependent scatter. A key concept in this work in the ability to synthesize a variable-coherence source by...

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Main Authors: Webb, K.J., Webster, M.A., McKinnny, J.D., Weiner, A.M.
Format: Conference Proceeding
Language:English
Subjects:
Optical fibers
Optical noise
Optical refraction
Optical variables control
Optical waveguides
Refractive index
Scattering parameters
Speckle
Spontaneous emission
Stimulated emission
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creator Webb, K.J.
Webster, M.A.
McKinnny, J.D.
Weiner, A.M.
description Summary form only given. We demonstrate the application of a variable-coherence laser source for determining the scattering parameters of a diffuse medium and the potential for imaging spatially-dependent scatter. A key concept in this work in the ability to synthesize a variable-coherence source by frequency modulating a tunable laser diode (with a center wavelength of 850 nm) at a rate much faster than the integration time of the detector. This allows for a rapid measurement and the adaption of laser coherence to the degree of scatter, which we show is critical in obtaining the necessary sensitivity.
doi_str_mv 10.1109/IQEC.2000.908169
format conference_proceeding
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Optical fibers
Optical noise
Optical refraction
Optical variables control
Optical waveguides
Refractive index
Scattering parameters
Speckle
Spontaneous emission
Stimulated emission
title Variable coherence in determining the scattering parameters of diffuse media using laser speckle
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