Assessment of photon migration in scattering media using heterodyning techniques with a frequency modulated diode laser.
Author
Summary, in English
A novel technique for studying photon propagation in scattering media is proposed and demonstrated, as is believed, for the first time. Photons propagating through the medium, from a frequency-ramped single-mode diode laser, meet a reference beam from the same source, at a common detector, and beat frequencies corresponding to various temporal delays are observed by heterodyne techniques. Fourier transformation directly yields the temporal dispersion curve. Proof-of-principle experiments on polystyrene foam and a tissue phantom suggest, that the new method, when fully developed, may favorably compete with the more complex time-correlated single-photon counting (TCSPC) and the phase-shift methods, now much employed.
Department/s
Publishing year
2009
Language
English
Pages
16291-16299
Publication/Series
Optics Express
Volume
17
Issue
18
Document type
Journal article
Publisher
Optical Society of America
Topic
- Atom and Molecular Physics and Optics
Status
Published
ISBN/ISSN/Other
- ISSN: 1094-4087