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Time-domain diffuse optics

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Time-Domain Diffuse Optics

Introduction

Time-Domain Diffuse Optics is branch of Functional Near-Infrared Spectroscopy which deals with light propagation in diffusive media. There are three main approaches to diffuse optics namely Continuous wave Frequency Domain and Time-Domain. In Time-domain approach, a narrow pulse of light is injected into the medium and the photon arrival times is recorded.

Physical Concepts


Instrumentation

Instrumentation in Time-Domain Diffuse optics includes a pulsed laser source, a single photon detector and a timing electronics

Sources

Sources in TD-DOS must have the following characteristics

Pulsed Laser pulsed laser in the wavelength range of the optical window i.e. 650 to 1350 nanometre are used as sources. They can either be a single wavelength diode laser or a super continuum laser.

Detectors

Timing Electronics

Applications

Functional Brain Imaging

Mammography

Food Quality Assessment

See Also

References


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