国产啁啾布拉格光纤光栅在飞秒激光系统中的应用

基金项目: 国家自然科学基金项目(12004262); 深圳市高层次人才项目(202024555101039)

Application of domestic chirped fiber Bragg gratings in femtosecond laser systems

1.
Center for Advanced Material Diagnostic Technology, Shenzhen Technology University, Shenzhen 518118, China
2.
Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Shenzhen Technology University, Shenzhen 518118, China
3.
College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
4.
Sino-German College of Intelligent Manufacturing, Shenzhen Technology University, Shenzhen 518118, China
5.
Engineering Physics Technology (Shenzhen) Ltd., Shenzhen 518118, China

摘要:
利用自行研制的啁啾布拉格光纤光栅(CFBG)刻写系统完成CFBG样品制作，成功应用于光纤锁模振荡器和啁啾脉冲放大(CPA)系统中。振荡器可输出19.4 nm带宽、18 mW平均功率激光，并可压缩至143 fs，经时域展宽、功率放大、时域压缩后，脉冲宽度可至264 fs。实验结果初步证明了国产CFBG在飞秒激光系统应用的可行性。
- 啁啾光纤光栅 /
- 啁啾脉冲放大 /
- 光纤锁模振荡器 /
- 飞秒激光 /
- 超快激光
Abstract:
Applying the home made chirped fiber Bragg grating (CFBG) writing system, CFBGs are successfully fabricated and applied in fiber mode-locked oscillator and chirped pulse amplification (CPA) systems. The oscillator can output 19.4 nm bandwidth, 18 mW average power laser, and can be compressed to 143 fs. With pulse stretching, power amplification and compression, 264 fs pulse width can be obtained. The experimental results initially demonstrate the feasibility of the domestic CFBG in femtosecond laser systems.
- chirped fiber Bragg grating /
- chirped pulse amplification /
- fiber mode-locked oscillator /
- femtosecond laser /
- ultrafast laser

图 1 CFBG刻写系统示意图

Figure 1. Schematic diagram of CFBG writing system

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图 2 CFBG-DMR样品和CFBG-Stretcher样品反射光谱

Figure 2. Reflection spectrum from CFBG-DMR and CFBG-Stretcher

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图 3 光纤啁啾脉冲放大系统

Figure 3. Fiber chirped pulse amplification system

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图 4 光纤锁模振荡器输出光谱和激光压缩后时域波形

Figure 4. Output spectrum from fiber mode-locked oscillator and its compressed pulse shape

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图 5 光纤啁啾脉冲放大系统压缩后光谱和时域波形

Figure 5. Output spectrum from fiber chirped pulse amplification system and its compressed pulse shape

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