光学
散射
全息术
点扩散函数
波前
光学(聚焦)
光传递函数
光散射
调制(音乐)
空间光调制器
计算机科学
传输(电信)
物理
电信
声学
作者
Qian Zhao,Ziqiang Wang,Xinyao Hu,Panpan Yu,Ruishan Chen,Yinmei Li,Lei Gong
摘要
In this letter, we present an approach to achieve three-dimensional (3D) focusing through highly scattering media. The method combines 3D computer-generated holography (CGH) with point-spread-function (PSF) based wavefront shaping. With a single transmission matrix measurement, CGH-aided PSF engineering enables us to control light volumetrically under multiple scattering. As a proof of concept, generating user-specified 2D intensity patterns and 3D focusing through scattering media were demonstrated. Further, axial scanning of the focus was realized digitally by using a digital micromirror device. Experimentally, our method achieves an axial scanning range ∼20 times larger than that obtained by the memory effect method. Our work is expected to benefit long-range optical trapping and volumetric imaging through highly scattering media.
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