| Autor: |
Muye Li, Xuezong yang, Yuxiang Sun, Huawei Jiang, Richard P. Mildren, Ondrej Kitzler, David J. Spence, Yan feng |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Optics Express. 31:8622 |
| ISSN: |
1094-4087 |
| DOI: |
10.1364/oe.483482 |
| Popis: |
We report an investigation into secondary mode suppression in single longitudinal mode (SLM) 1240 nm diamond Raman lasers. For a three-mirror V-shape standing-wave cavity incorporating an intra-cavity LBO crystal to suppress secondary modes, we achieved stable SLM output with a maximum output power of 11.7 W and a slope efficiency 34.9%. We quantify the level of χ(2) coupling necessary to suppress secondary modes including those generated by stimulated Brillouin scattering (SBS). It is found that SBS-generated modes often coincide with higher-order spatial modes in the beam profile and can be suppressed using an intracavity aperture. Using numerical calculations, it is shown that the probability for such higher-order spatial modes is higher for an apertureless V-cavity than in two-mirror cavities due its contrasting longitudinal mode-structure. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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