| Autor: |
Haifeng Hu, Zhuo Chen, Qian Cao, Qiwen Zhan |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
IEEE Photonics Journal, Vol 15, Iss 1, Pp 1-4 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
1943-0655 |
| DOI: |
10.1109/JPHOT.2023.3242289 |
| Popis: |
Ultrafast laser that directly emits vortex beam has broad application prospects in many research fields and applications, such as telecommunication, bio-sampling and quantum information science. In this article, we demonstrate a wavelength-tunable and OAM-switchable ultrafast fiber laser enabled by intracavity polarization controlling elements. The mode-locked laser can emit vortex beam outputs with a topological charge of l = +1 or l = −1 and the center wavelength can be continuously tuned from 1015 nm to 1038nm. The obtained output pulse has a pulse energy of 3.3 nJ and a compressed pulse duration of 87 fs. Compared with previous results, this laser can emit OAM-switchable output with a shorter pulse duration and a broad wavelength tuning range. The concept of adding polarization control elements to a mode-locked fiber laser can be further expanded to build laser with more sophisticated and customizable outputs. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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