High-speed focusing and scanning light through a multimode fiber based on binary phase-only spatial light modulation

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作者：
Yi Geng
Hui Chen
Zaikun Zhang
Bin Zhuang
Haitao Guo
Zhengquan He
Depeng Kong
机构：
[1] Chinese Academy of Sciences,State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics
[2] University of Chinese Academy of Sciences,Center of Materials Science and Optoelectronics Engineering
来源：
Applied Physics B | 2021年 / 127卷
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摘要：
A binary phase-only modulation technique was proposed to focus and scan light through a multimode fiber (MMF) based on spatial light modulator (SLM). For the same number of modulation modes, the number of iterations using this method is only 1/256 of that using phase-only iterative optimization or 1/3 of that using phase-only computation optimization, and the modulation time is at least one to two orders of magnitude shorter than previous wavefront shaping systems. Focusing and scanning light through an MMF with a 105 μm core diameter and 5 m length was achieved experimentally. This method can be extended to focus and scan light at multiple planes along the axial direction by modifying the input wavefront accordingly.
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