国产化掺铥光纤振荡器性能研究 -

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国产化掺铥光纤振荡器性能研究

doi:10.3788/CO.20191205.1109

孟佳^{1, 2,},
张伟^{2, 3},
赵开祺^{1, 2},
余婷^{2, 3,,},
吴闻迪²,
于春雷²,
李璇²,
李兴冀⁴,
叶锡生^{2, 3,,},
曹清¹

1.
上海大学理学院, 上海 200444
2.
中国科学院上海光学精密机械研究所, 上海 201800
3.
中国科学院大学, 北京 100049
4.
哈尔滨工业大学空间环境材料行为与评价技术国家级重点实验室, 黑龙江哈尔滨 150001

基金项目:

中国科学院"百人计划"项目1505521XRO

空间环境材料行为及评价技术国家级重点实验室基金项目6142910030613

详细信息

作者简介:
孟佳(1993-), 男, 河北唐山人, 硕士研究生, 2015年于东华大学获得学士学位, 现为上海大学与中国科学院上海光学精密机械研究所联合培养硕士研究生, 主要从事光纤器及中红外器方面的研究。E-mail:mengjia_sh@126.com
余婷(1977-), 女, 福建福州人, 博士, 高级工程师, 2011年于中国科学院上海光学精密机械研究所获得博士学位, 主要从事技术及非线性频率转换方面的研究。E-mail:yuting@siom.ac.cn
叶锡生(1967-), 男, 江苏泰兴人, 博士, 研究员, 1989年、1997年于浙江大学分别获得学士、博士学位, 主要从事技术、与物质相互作用等方面的研究。Email:xsye@siom.ac.cn

中图分类号:TN248
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出版历程
- 收稿日期:2018-11-27
- 修回日期:2019-01-09
- 刊出日期:2019-10-01

Investigation on the performance of a homemade thulium-doped fiber laser oscillator

MENG Jia^{1, 2,},
ZHANG Wei^{2, 3},
ZHAO Kai-qi^{1, 2},
YU Ting^{2, 3,,},
WU Wen-di²,
YU Chun-lei²,
LI Xuan²,
LI Xing-ji⁴,
YE Xi-sheng^{2, 3,,},
CAO Qing¹

1.
College of Science, Shanghai University, Shanghai 200444, China
2.
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China
4.
National Key Laboratory of Materials Behavior and Education Technology in Space Environment, Harbin Institute of Technology, Harbin 150001, China

Funds:

the Hundred-Talent Program of the Chinese Academy of Sciences1505521XRO

the Foundation of the National Key Laboratory of Materials Behavior and Evaluation Technology in Space Environment6142910030613

More Information

Corresponding author:YU Ting, E-mail:yuting@siom.ac.cn;YE Xi-sheng, Email:xsye@siom.ac.cn

摘要

摘要:目前，掺铥光纤器（TDFL）所使用的材料和器件，特别是增益光纤，多为外国公司所生产，因而，有必要开展基于国产材料和器件的该类器研究。本文报道了基于自研增益光纤建立的连续波掺铥光纤振荡器的性能。实验中，利用纤芯直径为10 μm的自研掺铥光纤、国产泵浦源及光纤光栅搭建了三台振荡器，分别产生了中心波长为1 918、1 941和2 013 nm的输出。此外，对国产与进口增益光纤的输出特性进行了比较。实验结果表明，与进口光纤相比，自研掺铥光纤在输出效率方面低6%~11%，但是光谱线宽保持良好（0.1 nm左右），且在近场光斑分布方面具有一定优势。
- 掺铥光纤振荡器/
- 国产化光纤材料与器件
Abstract:The optical fibers and devices used in thulium-doped fiber lasers(TDFL) are mostly produced by foreign companies. Therefore, it is necessary to develop TDFL based on homemade materials and devices. In this paper, the performance of continuous-wave thulium-doped fiber oscillators using a homemade gain fiber is reported. During the experiment, using a domestic thulium-doped fiber with a core diameter of 10 μm, homemade LD(laser diode) pump sources and fiber gratings, three oscillators were developed to generate laser output with central wavelengths of 1 918 nm, 1 941 nm and 2 013 nm, respectively. In addition, the laser output characteristics of the homemade and imported thulium-doped gain fibers were compared. The experimental results indicate that the output efficiency of the homemade thulium-doped fiber(TDF) is 6-11% lower than the imported TDF, but the homemade TDF has a similar spectral linewidth(about 0.1 nm) and a better near-field spot.
- Thulium-Doped Fiber Laser(TDFL) oscillator/
- homemade optical fiber materials and devices

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图 1铥离子的吸收光谱

Figure 1.Absorption spectrum of the thulium ions

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图 2铥离子的能级分布及其寿命

Figure 2.Energy-level distribution of thulium ions and their lifespans

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图 3掺铥光纤器数值模拟结果

Figure 3.Simulation results of thulium-doped fiber lasers

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图 4掺铥光纤振荡器原理结构

Figure 4.Schematic of the thulium-doped fiber laser oscillator

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图 5国产化掺铥光纤振荡器输出功率和光谱实验结果。(a)信号光功率与泵浦功率的关系；(b)~(d)1 918 nm、1 941 nm和2 013 nm振荡器的光谱

Figure 5.Experimental results of output power and spectra of the domestic thulium-doped fiber laser oscillators. (a)Relationship between signal power and pump power; (b)~(d)spectra of 1 918 nm, 1 941 nm and 2 013 nm oscillators

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图 6国产化掺铥光纤振荡器输出的近场光斑分布

Figure 6.Near-field spots of output laser from the domestic thulium-doped fiber oscillators

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图 7不同增益光纤长度下输出功率与泵浦光功率之间的关系

Figure 7.Relationship between output laser power and pump power under different gain fiber lengths

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图 860 min内掺铥光纤器功率稳定性

Figure 8.Stability of output power of TDFL in 60 min

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图 9更高泵浦功率下的功率输出曲线

Figure 9.Relationship between signal power and pump power with higher pump power

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图 10采用进口和国产掺铥光纤的振荡器输出功率对比实验结果

Figure 10.Contrast experimental results of the output powers of laser oscillators by using the domestic and imported TDFs

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图 11进口掺铥光纤振荡器输出的近场光斑分布

Figure 11.Near-field spots of the output laser from oscillators by using the imported thulium-doped fiber

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表 1光纤布拉格光栅参数表

Table 1.Parameters of the FBGs

1	λ_c^①=1 917.78 nm,	λ_c=1 917.81 nm,
	Δλ^②=1.2 nm,	Δλ=0.08 nm,
	R^③＞99%	R≈10%
2	λ_c=1 941.42 nm,	λ_c=1 941.67nm,
	Δλ=1.1 nm,	Δλ=0.11 nm,
	R＞99%	R≈30%
3	λ_c=2 013.34 nm,	λ_c=2 013.34 nm,
	Δλ=0.84 nm,	Δλ=0.16 nm,
	R＞99%	R≈11%
Notes：①λ_cis the central wavelength; ②Δλis the linewidth; ③Ris the reflectivity.

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表 2采用进口和国产掺铥光纤的振荡器的输出效率和光谱特性

Table 2.Output efficiencies and spectral characteristics of the laser oscillators by using the domestic and imported TDFs

光纤	中心波长/nm	输出功率/W	泵浦功率/W	斜率效率/%	光-光转化效率/%	线宽/nm
进口	1 918.00	2.92	10.52	34.6	27.7	0.09
国产	1 917.80	2.38	10.52	28.0	22.6	0.08
进口	1 941.72	3.96	10.88	43.1	36.3	0.10
国产	1 941.75	2.95	10.88	31.8	27.1	0.09
进口	2 013.33	3.50	10.40	37.0	33.7	0.09
国产	2 013.38	2.92	10.40	29.1	28.0	0.10

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