Investigation of the low-level modulated light action

Sergei N. Antonov; V. N. Sotnikov; L. G. Koreneva

doi:10.1117/12.180736

28 July 1994 Investigation of the low-level modulated light action

Sergei N. Antonov, V. N. Sotnikov, L. G. Koreneva

Proceedings Volume 2131, Biomedical Fiber Optic Instrumentation; (1994) https://doi.org/10.1117/12.180736
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Now there exists no clear complete knowledge about mechanisms and pathways by which low level laser bioactivation works. Modulated laser light action has been investigated two new ways: dynamical infrared thermography and computing image of living brain. These ways permit observation in real time laser action on peripheral blood flow, reflex reactions to functional probes, thermoregulation mechanisms as well as brain electrical activity changes of humans. We have designed a universal apparatus which produced all regimes of the output laser light. It has a built-in He-Ne laser with an acousto-optic modulator and an infrared GaAs laser. The device provided spatial combination of both the light beams and permitted us to irradiate an object both separately and simultaneously. This research shows that the most effective frequencies range from several to dozens of hertz. The duty factor and frequency scanning are also important. On the basis of these results in Russian clinics new treatment methods using modulated light are applied in practical neurology, gynecology, etc.

Citation Download Citation

Sergei N. Antonov, V. N. Sotnikov, and L. G. Koreneva "Investigation of the low-level modulated light action", Proc. SPIE 2131, Biomedical Fiber Optic Instrumentation, (28 July 1994); https://doi.org/10.1117/12.180736

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KEYWORDS

Modulation

Brain

Temperature metrology

Semiconductor lasers

Thermography

Neuroimaging

Gallium arsenide

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