Toda Sogo, Kato Yuji, Kudo Nobuki, Shimizu Koichi
Graduate School of Information Science and Technology, Hokkaido University, North 14 West 9, Kita-ku, Sapporo, 060-0814, Japan.
Graduate School of Information, Production and Systems, Waseda University, 2-7 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan.
Biomed Opt Express. 2018 Mar 8;9(4):1570-1581. doi: 10.1364/BOE.9.001570. eCollection 2018 Apr 1.
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.
对于动物组织的透照成像，我们尝试利用相位共轭光的时间反转原理来抑制浑浊介质中的散射效应。我们构建了一个数字相位共轭系统，以实现强度调制和相位调制。利用该系统，我们阐明了强度信息对于通过浑浊介质恢复原始光分布的有效性。通过改变介质的散射系数，我们阐明了利用相位共轭光的强度信息进行时间反转的能力极限。实验结果证明了所提出技术对动物组织的适用性。
