Real-time modal decomposition of fiber laser beams using a spatial mode multiplexer
A novel, to the best of our knowledge, approach for the modal decomposition of a fiber laser beam is demonstrated using a spatial mode multiplexer. Since the modal decomposition is carried out optically, this approach is able to obtain the modal content at speeds up to the GHz level. In order to demonstrate such performance, we have applied this approach to the modal analysis of a <i>Q</i>-switched pulse generated in a multimode fiber with alternating intra-pulse mode content.
Authors
- Jens Limpert (ORCID: https://orcid.org/0000-0001-8349-3530)
- Yiming Tu (ORCID: https://orcid.org/0000-0001-6093-8314)
- Sobhy Kholaif (ORCID: https://orcid.org/0000-0002-3323-7464)
- César Jáuregui (ORCID: https://orcid.org/0000-0002-6538-8777)
Institutions
- Helmholtz Institute Jena (DE)
- GSI Helmholtz Centre for Heavy Ion Research (DE)
- Fraunhofer Institute for Applied Optics and Precision Engineering (DE)
Publication Details
- Journal
- Optics Letters
- Published
- 2024-12-20
- DOI
- https://doi.org/10.1364/ol.546209
- Primary Topic
- Photonic Crystal and Fiber Optics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Deutsche Forschungsgemeinschaft
- Fraunhofer-Gesellschaft