一种具有高非线性阈值的光纤激光放大器
By introducing a phase modulator and a focusing lens into the fiber amplifier, the conversion from single transverse mode laser to coherent multi-transverse mode laser was realized, solving the problem of beam quality degradation, improving the nonlinear threshold and beam quality, and simplifying the fabrication process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HFB PHOTONICS CO LTD
- Filing Date
- 2024-11-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing fiber amplifiers are prone to nonlinear effects when increasing laser power, which leads to a decrease in beam quality. Furthermore, traditional methods are costly and complex, making it difficult to achieve high-beam-quality laser output.
By introducing a phase modulator, a single transverse mode laser is converted into a coherent multi-transverse mode laser, and the phase difference of each mode is optimized in the main amplification stage so that they meet at the target position. Combined with a focusing lens, a high beam quality laser output is obtained.
It improves the nonlinear threshold of the fiber amplifier, avoids beam quality degradation, broadens the selection space of gain fiber, reduces the difficulty and cost of fabrication, and facilitates system integration.
Smart Images
Figure CN119496020B_ABST