Article ; Online: Nano-optical trapping using an all-dielectric optical fiber supporting a TEM-like mode.
2021 Volume 33, Issue 4
Abstract: Fiber optical tweezers benefit from compact structures and compatibility with fiber optic technology, however, trapping of nano-objects are rarely demonstrated. Here, we predict stable optical trapping of a 30 nm polystyrene particle using an all- ... ...
| Abstract | Fiber optical tweezers benefit from compact structures and compatibility with fiber optic technology, however, trapping of nano-objects are rarely demonstrated. Here, we predict stable optical trapping of a 30 nm polystyrene particle using an all-dielectric coaxial optical fiber supporting an axisymmetric TEM-like mode. We demonstrate, via comprehensive finite-difference time-domain simulations, that the trapping behavior arises from a significant shift of the fiber-end-fire radiation directivity originated from the nanoparticle-induced symmetry breaking, rather than the gradient force which assumes an invariant optical field. Fabrication of the fiber involved is entirely feasible with existing techniques, such as thermal-drawn and electrospinning, and therefore can be mass-produced. |
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| Language | English |
| Publishing date | 2021-11-02 |
| Publishing country | England |
| Document type | Journal Article |
| ZDB-ID | 1362365-5 |
| ISSN | 1361-6528 ; 0957-4484 |
| ISSN (online) | 1361-6528 |
| ISSN | 0957-4484 |
| DOI | 10.1088/1361-6528/ac2766 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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