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Updated: Feb 11, 2026

Method for the Assessment of Effects of a Range of Wavelengths and Intensities of Red/near-infrared Light Therapy on Oxidative Stress In Vitro
Published on: March 21, 2015
Effects of digital phase-conjugate light intensity on time-reversal imaging through animal tissue
Sogo Toda1, Yuji Kato1, Nobuki Kudo1
1Graduate School of Information Science and Technology, Hokkaido University, North 14 West 9, Kita-ku, Sapporo, 060-0814, Japan.
Abstract:
For transillumination imaging of animal tissues, we have attempted to suppress the scattering effect in a turbid medium using the time-reversal principle of phase-conjugate light. We constructed a digital phase-conjugate system to enable intensity modulation and phase modulation. Using this system, we clarified the effectiveness of the intensity information for restoration of the original light distribution through a turbid medium. By varying the scattering coefficient of the medium, we clarified the limit of time-reversal ability with intensity information of the phase-conjugate light. Experiment results demonstrated the applicability of the proposed technique to animal tissue.
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