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Multi-wavelength NIR system for spectroscopy of biomedical tissues
Conference proceeding

Multi-wavelength NIR system for spectroscopy of biomedical tissues

Chenpeng Mu, Do Yoon Kim, U Sunar, K Pourrezaei and A Daryoush
MWP 2003 Proceedings. International Topical Meeting on Microwave Photonics, 2003, pp 275-278
2003

Abstract

Biomedical optical imaging Driver circuits Frequency response High speed optical techniques Imaging phantoms Laser modes Optical design Optical scattering Power lasers Spectroscopy
A custom designed optical system is reported for tissue spectroscopy over four wavelengths of 677 nm, 780 nm, 830 nm, and 977 nm. A high speed laser driver is designed with a flat frequency response using pre-emphasis circuit. The driver is employed for high current in high power lasers. Phantom and intra-lipid experiments are performed to extract optical parameters of a turbid media. Broadband measurement is used to extract optical parameters of the phantom model simulating a breast tissue using forward scattering models. The optical parameters () are extracted with a very good accuracy.

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