Millimeter-scale focal length tuning with MEMS-integrated meta-optics employing high-throughput fabrication.

Millimeter-scale focal length tuning with MEMS-integrated meta-optics employing high-throughput fabrication.
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采用高通量制造的微机电系统(MEMS)集成超构光学元件实现毫米级焦距调谐

DOI:
10.1038/s41598-022-09277-8
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发表时间:
2022-03-30
期刊:
影响因子:
4.6
通讯作者:
Böhringer KF
Böhringer KF
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Han Z;Colburn S;Majumdar A;Böhringer KF

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微型变焦透镜对于许多需要紧凑光学系统的应用至关重要。在此,我们利用机电驱动的0.5毫米孔径红外阿尔瓦雷斯超光学元件,展示了在低于40伏的驱动电压下实现3.1毫米(200屈光度)的焦距调谐。这是在任何低功率机电驱动的超光学元件中实现的最大焦距调谐,这是通过梳状驱动致动器中的高能量密度实现的,该致动器能在相对较低的电压下产生大位移。所展示的器件是通过一种新颖的纳米制造工艺制造的,该工艺适用于更大孔径的超光学元件,并通过倒装芯片键合改善了超光学元件之间的对准。整个制造过程与互补金属氧化物半导体(CMOS)兼容,适合高通量制造。
Miniature varifocal lenses are crucial for many applications requiring compact optical systems. Here, utilizing electro-mechanically actuated 0.5-mm aperture infrared Alvarez meta-optics, we demonstrate 3.1 mm (200 diopters) focal length tuning with an actuation voltage below 40 V. This constitutes the largest focal length tuning in any low-power electro-mechanically actuated meta-optic, enabled by the high energy density in comb-drive actuators producing large displacements at relatively low voltage. The demonstrated device is produced by a novel nanofabrication process that accommodates meta-optics with a larger aperture and has improved alignment between meta-optics via flip-chip bonding. The whole fabrication process is CMOS compatible and amenable to high-throughput manufacturing.
基于混合介电金属超表面反射器阵列的可见光聚焦平面透镜
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发表时间: 2017-03-23
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影响因子: 4.6
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影响因子: 7.9
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影响因子: 10.4
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