MEMS-tunable dielectric metasurface lens.
MEMS-tunable dielectric metasurface lens.
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DOI:
10.1038/s41467-018-03155-6
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发表时间:
2018-02-23
影响因子:
16.6
通讯作者:
Faraon A
中科院分区:
文献类型:
--
作者:
Arbabi E;Arbabi A;Kamali SM;Horie Y;Faraji-Dana M;Faraon A
Varifocal lenses, conventionally implemented by changing the axial distance between multiple optical elements, have a wide range of applications in imaging and optical beam scanning. The use of conventional bulky refractive elements makes these varifocal lenses large, slow, and limits their tunability. Metasurfaces, a new category of lithographically defined diffractive devices, enable thin and lightweight optical elements with precisely engineered phase profiles. Here we demonstrate tunable metasurface doublets, based on microelectromechanical systems (MEMS), with more than 60 diopters (about 4%) change in the optical power upon a 1-μm movement of one metasurface, and a scanning frequency that can potentially reach a few kHz. They can also be integrated with a third metasurface to make compact microscopes (~1 mm thick) with a large corrected field of view (~500 μm or 40 degrees) and fast axial scanning for 3D imaging. This paves the way towards MEMS-integrated metasurfaces as a platform for tunable and reconfigurable optics. Conventional refractive elements are bulky, thick and offer limited active tunability. Here, the authors demonstrate MEMS-based tunable metasurface doublets with more than 60 diopters change in the optical power upon a 1-micron movement of a membrane with one of the metasurface elements.
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影响因子:
11
作者:
Kamali, Seyedeh Mahsa;Arbabi, Ehsan;Faraon, Andrei
通讯作者:
Faraon, Andrei
影响因子:
16.6
作者:
通讯作者:
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影响因子:
3.8
作者:
Jeong, KH;Liu, GL;Lee, LP
通讯作者:
Lee, LP
影响因子:
10.4
作者:
Arbabi, Ehsan;Arbabi, Amir;Faraon, Andrei
通讯作者:
Faraon, Andrei
影响因子:
4.6
作者:
Cheng J;Jafar-Zanjani S;Mosallaei H
通讯作者:
Mosallaei H