Yu Zhipeng, Li Huanhao, Zhong Tianting, Lai Puxiang
Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China.
Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, China.
Light Sci Appl. 2022 Jun 1;11(1):167. doi: 10.1038/s41377-022-00858-w.
Time-gated reflection matrix (RM) has been successfully used for optical imaging deep inside scattering media. Recently, this method was extended to enhance the spatiotemporal focusing of light ultra-deep inside scattering media. This is achieved by calibrating the decomposition of the RM with the Tikhonov regularization parameter to convert multiply scattered photons that share the same time of flight with the singly scattered photons into singly scattered photons. Such a capability suggests a reshaping to the interaction mechanism between light and scattering media, which may benefit or inspire wide optical applications that desire enhanced spatiotemporal focusing of light at depths inside scattering media.
时间门控反射矩阵（RM）已成功应用于散射介质内部的光学成像。最近，该方法得到扩展，用于增强散射介质极深处光的时空聚焦。这是通过用蒂霍诺夫正则化参数校准RM的分解来实现的，以便将与单次散射光子具有相同飞行时间的多次散射光子转换为单次散射光子。这种能力意味着光与散射介质之间相互作用机制的重塑，这可能有益于或启发那些希望在散射介质深处增强光时空聚焦的广泛光学应用。
