100W高光束质量光子晶体光纤棒皮秒脉冲放大器

李天琦; 毛小洁; 雷健; 秘国江; 姜东升

doi:10.11884/HPLPB201830.170515

100W高光束质量光子晶体光纤棒皮秒脉冲放大器

doi: 10.11884/HPLPB201830.170515

李天琦^{1, 2,},
毛小洁^{1, 2},
雷健^{1, 2},
秘国江^{1, 2},
姜东升²

1.
固体激光技术重点实验室, 北京 100015
2.
华北光电技术研究所, 北京 100015

详细信息

作者简介:
李天琦(1992－), 男，硕士研究生，从事高功率皮秒放大技术方面的研究；juju222888@163.com

中图分类号: TN248.1
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- 被引次数: 0
出版历程
- 收稿日期: 2017-12-20
- 修回日期: 2018-04-14
- 刊出日期: 2018-09-15

100W high beam quality rod-type photonic crystal fiber amplifier for picosecond pulses

Li Tianqi^{1, 2
,},
Mao Xiaojie^{1, 2},
Lei Jian^{1, 2},
Bi Guojiang^{1, 2},
Jiang Dongsheng²

1.
Science and Technology on Solid-State Laser Laboratory, Beijing 100015, China
2.
North China Research Institute of Electro-Optics, Beijing 100015, China

摘要

摘要: 使用光子晶体光纤棒作为增益介质，设计了皮秒脉冲放大器的实验光路。通过实验研究分析了光子晶体光纤棒皮秒脉冲放大器的输出功率、斜率效率与光光转换效率、光束质量、重复频率、脉宽、光谱。获得了最大平均功率为101.7 W，重复频率为30 MHz，脉宽为6.4 ps，横向和纵向光束质量分别为1.111，1.017的近衍射极限输出，放大器的斜率效率达到了65%，光光转换效率达到了58.9%。
- 光子晶体光纤棒 /
- 光纤放大器 /
- 皮秒放大器 /
- 大平均功率 /
- 高光束质量
Abstract: We used the rod-type photonic crystal fiber as a gain medium and designed an experimental system for picosecond pulse amplifier. Output power, slope efficiency and optical-to-optical conversion efficiency, beam quality, repetition rate, pulse width, spectrum of the rod-type photonic crystal fiber picosecond amplifier were analyzed. As a result, we got a maximum average power of 101.7 W, repetition rate of 30 MHz, pulse width of 6.4 ps, beam quality of M_x²=1.111, M_y²=1.017 near diffraction limit laser with slope efficiency of 65% and optical-to-optical conversion efficiency of 58.9%.
- rod-type photonic crystal fiber /
- fiber amplifier /
- picosecond amplifier /
- high average power /
- high beam quality

HTML全文

图 1 种子光耦合光路图

Figure 1. Seed beam coupling system

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图 2 泵浦光耦合光路图

Figure 2. Pump beam coupling system

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图 3 测试光路图

Figure 3. Testing system

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图 4 光纤棒皮秒脉冲放大实验图

Figure 4. Rod fiber picosecond amplification laser system

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图 5 信号光功率、光光转换效率随泵浦光功率的变化情况

Figure 5. Signal power and optical-to-optical conversion efficiency vs pump power

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图 6 种子光耦合光束质量与101.7 W信号光输出光束质量

Figure 6. Coupled seed beam quality and 101.7 W signal beam quality

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图 7 种子光与信号光重复频率

Figure 7. Repetition rates of seed and 101.7 W signal

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图 8 种子光与信号光脉宽

Figure 8. Pulse widths of seed and 101.7 W signal

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图 9 种子光与信号光光谱

Figure 9. Spectra of seed and 101.7 W signal

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表 1 泵浦光功率、信号光功率、光-光转换效率

Table 1. Pump power, signal power and optical-to-optical conversion efficiency

pump current/A	pump power/W	signal power/W	optical-to-optical conversion efficiency/%
1	24.57	10.8	19.5
1.5	34.6	18.3	35.5
2	45.6	26.2	44.3
2.5	55.7	33.3	49.0
3	66.7	39.9	50.8
3.5	77.6	46.6	52.3
4	88.6	54.6	54.9
4.5	99.6	62.1	56.3
5	111.0	69.5	57.2
5.5	121.9	76.0	57.4
6	132.9	83.3	58.2
6.5	142.8	91.6	59.9
7	152.0	96.6	59.6
7.5	162.4	101.7	58.9

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参考文献(11)

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