光学镊子
光学
材料科学
镊子
光纤
数值孔径
极化(电化学)
光学力
同轴
俘获
纺纱
旋转(数学)
光电子学
物理
工程类
化学
复合材料
物理化学
几何学
电气工程
生物
数学
生态学
波长
作者
Nyha Majeed Hameed,Thinhinane Zeghdoudi,B. Guichardaz,Abdelaziz Mezeghrane,Miguel Ángel Suárez,Nadège Courjal,M.P. Bernal,Abderrahmane Belkhir,Fadi Baida
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2023-01-11
卷期号:31 (3): 4379-4379
被引量:4
摘要
Advances in optical trapping design principles have led to tremendous progress in manipulating nanoparticles (NPs) with diverse functionalities in different environments using bulky systems. However, efficient control and manipulation of NPs in harsh environments require a careful design of contactless optical tweezers. Here, we propose a simple design of a fibered optical probe allowing the trapping of dielectric NP as well as a transfer of the angular momentum of light to the NP inducing its mechanical rotation. A polarization conversion from linearly-polarized incident guided to circularly transmitted beam is provoked geometrically by breaking the cylindrical symmetry of a coaxial nano-aperture that is engraved at the apex of a tapered metal coated optical fiber. Numerical simulations show that this simple geometry tip allows powerful light transmission together with efficient polarization conversion. This guarantees very stable trapping of quasi spherical NPs in a non-contact regime as well as potentially very tunable and reversible rotation frequencies in both directions (up to 45 Hz in water and 5.3 MHz in air for 10 mW injected power in the fiber). This type of fiber probe opens the way to a new generation of miniaturized tools for total manipulation (trapping, sorting, spinning) of NPs.
科研通智能强力驱动
Strongly Powered by AbleSci AI