Detection of pulsed absorber using phase modulation spectroscopy

Kyung A. Kang; Britton Chance; Duane F. Bruley

doi:10.1117/12.154638

14 September 1993 Detection of pulsed absorber using phase modulation spectroscopy

Kyung A. Kang, Britton Chance, Duane F. Bruley

Proceedings Volume 1888, Photon Migration and Imaging in Random Media and Tissues; (1993) https://doi.org/10.1117/12.154638
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

Characteristics of a system of interest can be analyzed by studying the system response to a particular input. NIR spectroscopy frequently uses an impulse (time resolved spectroscopy, TRS) and a sinusoidally modulated wave input (phase modulated spectroscopy, PMS). In this paper, we describe the theoretical principle of phase change in PMS measurement due to the heterogeneity. The phase change in a dynamic system is studied experimentally by using an experimental model and simple physiological systems.

Citation Download Citation

Kyung A. Kang, Britton Chance, and Duane F. Bruley "Detection of pulsed absorber using phase modulation spectroscopy", Proc. SPIE 1888, Photon Migration and Imaging in Random Media and Tissues, (14 September 1993); https://doi.org/10.1117/12.154638

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