| Issue |
EPJ Web Conf.
Volume 309, 2024
EOS Annual Meeting (EOSAM 2024)
|
|
|---|---|---|
| Article Number | 12003 | |
| Number of page(s) | 2 | |
| Section | Focused Sessions (FS) 2- Optical Fibers Technology | |
| DOI | https://doi.org/10.1051/epjconf/202430912003 | |
| Published online | 31 October 2024 | |
https://doi.org/10.1051/epjconf/202430912003
Bicolor Bessel beams generator based on single-mode fiber for STED system light source
1 Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, China
2 Westlake Institute for Optoelectronics, Fuyang, Hangzhou 311421, China
3 Institute of Advanced Technology, Westlake Institute for Advanced Study. Hangzhou 310024, China
* Corresponding author: lixijun@westlake.edu.cn, qiu_lab@westlake.edu.cn
Published online: 31 October 2024
In this paper, we have presented a novel and compact bicolor Bessel beams (bi-BBs) generator based on a single-mode fiber integrated with an axicon-like microstructure (AM). The proposed design utilized two Bessel beams manifested as pump beam of circular distribution at λ=405 nm and STED beam of donut distribution at λ=532 nm. Through numerical simulations, the influence of the AM size variance on the characteristics of bi-BBs was investigated and a type of AMs has been found to support STED beam. By controlling and optimizing the characteristics of bi-BBs emitted from a single-mode fiber greatly reduces the coaxial alignment difficulty of the free space STED systems and provides a new way to achieve mirrorless STED super-resolution systems.
© The Authors, published by EDP Sciences, 2024
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