期刊
NATURE PHOTONICS
卷 12, 期 5, 页码 277-+出版社
NATURE RESEARCH
DOI: 10.1038/s41566-018-0120-9
关键词
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资金
- Global Frontier Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2014M3A6B3063710]
- Korea Health Technology R&D Project - Ministry of Health & Welfare, Republic of Korea [HI14C0748]
- NRF - Korean government (MSIT) [2009-0081565]
- [IBS-R023-D1]
The efficient delivery of light energy is a prerequisite for the non-invasive imaging and stimulating of target objects embedded deep within a scattering medium. However, the injected waves experience random diffusion by multiple light scattering, and only a small fraction reaches the target object. Here, we present a method to counteract wave diffusion and to focus multiple-scattered waves at the deeply embedded target. To realize this, we experimentally inject light into the reflection eigenchannels of a specific flight time to preferably enhance the intensity of those multiple-scattered waves that have interacted with the target object. For targets that are too deep to be visible by optical imaging, we demonstrate a more than tenfold enhancement in light energy delivery in comparison with ordinary wave diffusion cases. This work will lay a foundation to enhance the working depth of imaging, sensing and light stimulation.
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