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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1999),
  • paper CWF1

Frequency-domain near infrared spectroscopy instrumentation: a simplified design using a high frequency lock-in amplifier

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Abstract

Use of intensity-modulated lasers to probe tissue optical properties is a non-invasive technique in which the intensity of the laser output intensity is sinusoidally modulated (also called frequency modulated, phase modulated, phase resolved or frequency domain method).

© 1999 Optical Society of America

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