Single-Mode Narrow-Linewidth Laser Based on Stimulated Brillouin Scattering and Parity-Time Symmetry
| Autor: | Lingzhi Li, Jiejun Zhang, Zhenpeng Deng, Jianping Yao |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
business.industry Scattering Single-mode optical fiber Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Laser law.invention Laser linewidth 020210 optoelectronics & photonics Optics Polarization controller Brillouin scattering law Fiber laser 0202 electrical engineering electronic engineering information engineering 0210 nano-technology business Lasing threshold |
| Zdroj: | 2020 International Topical Meeting on Microwave Photonics (MWP). |
| Popis: | we propose and experimentally demonstrate a single-mode narrow-linewidth laser based on the stimulated Brillouin scattering (SBS) effect and parity-time symmetry to ensure single-mode operation. In a single cavity, we provide gain loop in the counterclockwise (CCW) direction by the SBS amplified effect, and loss loop in the clockwise (CW) direction. Then we accurately adjust the polarization controller (PC) to achieve gain and loss of the same magnitude for the CCW and CW lights. Under the PT symmetry broken condition, single-mode lasing is achieve with high stability in a long fiber laser cavity, resulting in a sub-kHz narrow linewidth. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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