Researching | Research progress of single-frequency fiber laser based on Re: YAG-SiO2 fiber (Invited)

Journals >Infrared and Laser Engineering >Volume 51 >Issue 6 >Page 20220133 > Article

Infrared and Laser Engineering
Vol. 51, Issue 6, 20220133 (2022)

Research progress of single-frequency fiber laser based on Re: YAG-SiO₂ fiber (Invited)

Zhenshuai Wei¹, Yongyao Xie², Xianbin Shao², Jundu Liu¹..., Wei Zhao², Xian Zhao¹, Xingyu Zhang^1,2, Zhigang Zhao^1,2, Zhenhua Cong^1,2 and Zhaojun Liu^1,2|Show fewer author(s)

Author Affiliations

¹Key Laboratory of Laser & Infrared System (Shandong University), Ministry of Education, Qingdao 266237, China

²Shandong Provincial Key Laboratory of Laser Technology and Application, School of Information Science and Engineering,Shandong University, Qingdao 266237, China

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DOI: 10.3788/IRLA20220133 Cite this Article

Zhenshuai Wei, Yongyao Xie, Xianbin Shao, Jundu Liu, Wei Zhao, Xian Zhao, Xingyu Zhang, Zhigang Zhao, Zhenhua Cong, Zhaojun Liu. Research progress of single-frequency fiber laser based on Re: YAG-SiO₂ fiber (Invited)[J]. Infrared and Laser Engineering, 2022, 51(6): 20220133 Copy Citation Text

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Schematic diagram of molten core method

Fig. 1. Schematic diagram of molten core method

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(a) Schematic diagram of twice drawing[39]; (b)-(g) Optical micrograph of the cross-section for YAG, Yb:YAG, Nd:YAG, Er:YAG, Er/Yb:YAG, Tm:YAG-SiO2 fiber

Fig. 2. (a) Schematic diagram of twice drawing^[39]; (b)-(g) Optical micrograph of the cross-section for YAG, Yb:YAG, Nd:YAG, Er:YAG, Er/Yb:YAG, Tm:YAG-SiO₂ fiber

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Fig. 3. Energy level structure of Nd³⁺

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Fig. 4. (a) Schematic diagram of single-frequency laser; (b) Longitudinal mode characteristics by F-P interferometer^[47]

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Fig. 5. (a) Schematic diagram of single-frequency laser; (b) Output power with respect to pump power; (c) Output spectrum^[49]

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Fig. 6. Energy level structure of Yb^{3+ [54]}

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Fig. 7. (a) Schematic diagram of single-frequency laser; (b) Output power with respect to pump power; (c) Output spectrum^[56]

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Fig. 8. (a) Schematic diagram of experiment; (b) Internal structure; (c) Self-heterodyne signal with Lorentzian fitted linewidth; (d) Operation interface of Labview;(e) Prototype; (f) Output power stability^[57]

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Fig. 9. (a) Schematic diagram of amplifier device; (b) Output power and backward optical power with respect to pump power; (c) Laser linewidth before and after amplification^[58]

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Fig. 10. (a) Schematic diagram of single-frequency laser; (b) Output power with respect to pump power; (c) Self-heterodyne signal with Lorentzian fitted linewidth^[60]

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Fig. 11. (a) Molten core method based on CO₂ laser-heated; (b) Output power with respect to pump power^[62]

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Fig. 12. Energy level structure of Er^3+[54]

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Fig. 13. (a) Schematic diagram of single-frequency laser; (b) Output power with respect to pump absorption power; (c) Longitudinal mode characteristics by F-P interferometer; (d) Typical trace of single pulse^[39]

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Fig. 14. (a) Schematic of the co-melt in tube method; (b) Output spectrum; (c) Longitudinal mode characteristics by F-P interferometer^[54]

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Fig. 15. Energy level structure of Tm³⁺

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Fig. 16. (a) Schematic diagram of single-frequency laser; (b) Output spectrum; (c) Longitudinal mode characteristics by F-P inter-ferometer; (d) Output power with respect to pump power and pump absorption power

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Core precursor	Gain /dB·cm^-1	Gain fiber length /cm	Power /mW	Slope efficiency	Refs
Nd:YAG ceramic (5.0-at.%)	1.57@ 1064 nm	1.8	-	6%	[47]
Nd:YAG crystal (2.5-at.%)	1.49@ 1064 nm	0.9	2.58	1.26%	[48]
Nd:YAG crystal (2.5-at.%)	1.16@ 915 nm	0.6	0.1	0.11%	[50]

Table 1. Research progress of single-frequency fiber laser based on Nd:YAG-SiO₂ fiber

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Gain fiber					Wavelength/ nm	Output power/ mW	Slope efficiency	OSNR/ dB	RMS	Linewidth/ kHz	Refs
Core precursor	Doping/ wt.%	Gain/ dB·cm⁻¹	Transmission loss/ dB·cm⁻¹	NA	Wavelength/ nm	Output power/ mW	Slope efficiency	OSNR/ dB	RMS	Linewidth/ kHz	Refs
Yb:YAG ceramic	2.6	3@ 1064 nm	0.03@ 1550 nm	0.47	1064	-	3.8%	-	-	-	[55]
Yb:YAG Crystal	4.8	1.7@ 1064 nm	0.005@ 1550 nm	0.42	1064	110	18.5%	80	0.51%@ 1 h	93	[56]
Yb:YAG crystal	-	2.7@ 1064 nm	-	-	1064	105.6 MOPA	17.1% Seed	63	0.096%@ 48 h	3	[57]
Yb:YAG crystal	4.2	1.7@ 1064 nm	0.005@ 1550 nm	0.42	1066	60.6 Linear polariza-tion	16.6%	80	<2.2%@ 6 h	81	[58]
Yb:YAG crystal	4.8	1.7@ 1064 nm	0.005@ 1550 nm	0.42	1064	136 Pulse peak	-	>60	-	-	[54]
Yb:YAG crystal	4.8	1.7@ 1064 nm	0.005@ 1550 nm	0.42	1070	45	10.2%	60	0.36%@ 0.5 h	<4.3	[59]
Yb:YAG crystal	5.25	12.6@ 976 nm	0.06@ 1550 nm	0.50	976	17.8	12.1%	>45	-	<41	[60]
Yb:YAG crystal	5.66	4.4@ 1030 nm	-	0.42	1030	258	34.9%	79	<0.85% @ 13 h	171	[61]
Yb:YAG crystal	6.57	6.0@ 1030 nm	0.006@ 1550 nm	-	1030	103.5	18.3%	>63	0.65%@ 10 h	<7.5	[62]
Yb:YAG powder	4.53	-	0.054@ 1550 nm	0.26	1062	~42	15.3%	60	0.68% @ 1 h	230	[63]

Table 2. Research progress of single-frequency fiber laser based on Yb:YAG-SiO₂ fiber

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Core precursor	Doping/wt.%	Gain/dB·cm^-1	Power/mW	Slope efficiency	Refs
Er:YAG ceramic	Er₂O₃: 2.96	1.46 @ 1550 nm	24.2	15.1%	[39]
Er:YAG crystal + Yb:YAG crystal	Er₂O₃: 2.51 Yb₂O₃:2.38	2.33@ 1550 nm	-	-	[54]

Table 3. Research progress of single-frequency fiber laser based on Re:YAG-SiO₂ fiber in 1.5 μm band

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Zhenshuai Wei, Yongyao Xie, Xianbin Shao, Jundu Liu, Wei Zhao, Xian Zhao, Xingyu Zhang, Zhigang Zhao, Zhenhua Cong, Zhaojun Liu. Research progress of single-frequency fiber laser based on Re: YAG-SiO₂ fiber (Invited)[J]. Infrared and Laser Engineering, 2022, 51(6): 20220133

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