Measurements of the achievable time-dependent point-spread-function of multiply scattered light between the ballistic and diffuse limits

John A. Moon; Philip R. Battle; Mark Bashkansky; John F. Reintjes; Judith M. S. Prewitt

doi:10.1117/12.210034

30 May 1995 Measurements of the achievable time-dependent point-spread-function of multiply scattered light between the ballistic and diffuse limits

John A. Moon, Philip R. Battle, Mark Bashkansky, John F. Reintjes, Judith M. S. Prewitt

Author Affiliations +

Proceedings Volume 2389, Optical Tomography, Photon Migration, and Spectroscopy of Tissue and Model Media: Theory, Human Studies, and Instrumentation; (1995) https://doi.org/10.1117/12.210034
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

We measured the time-dependent optical point-spread-function of light which has traversed a turbid, multiply scattering medium. We used a coherently amplified raman polarization (CARP)-gate system which had 250 femtosecond temporal and submillimeter spatial resolution. We find that resolutions better than the theoretically predicted diffusion limited value are achievable for samples longer than 90 scattering lengths when the anisotropy parameter g is greater than 0.995. Experimental results can be fit adequately with a model based on the isotropic-scattering solution to the transport equation in an infinite, turbid solid, characterized by a rescaled scattering length l_r.

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John A. Moon, Philip R. Battle, Mark Bashkansky, John F. Reintjes, and Judith M. S. Prewitt "Measurements of the achievable time-dependent point-spread-function of multiply scattered light between the ballistic and diffuse limits", Proc. SPIE 2389, Optical Tomography, Photon Migration, and Spectroscopy of Tissue and Model Media: Theory, Human Studies, and Instrumentation, (30 May 1995); https://doi.org/10.1117/12.210034

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KEYWORDS

Scattering

Diffusion

Light scattering

Imaging systems

Point spread functions

Anisotropy

Optical resolution

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