Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse

Meng Wang; Yijian Huang; Zongpeng Song; Jincheng Wei; Jihong Pei; Shuangchen Ruan

doi:10.1017/hpl.2020.7

Journals >High Power Laser Science and Engineering >Volume 8 >Issue 2 >Page 02000e14 > Article

High Power Laser Science and Engineering
Vol. 8, Issue 2, 02000e14 (2020)

Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse

Meng Wang¹, Yijian Huang², Zongpeng Song¹, Jincheng Wei³, Jihong Pei⁴, and Shuangchen Ruan^1、*

Author Affiliations

¹Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes, Shenzhen Technology University, Shenzhen 518118, China

²Key Laboratory of Optoelectronic Devices and System of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China

³Shenzhen Key Laboratory of Laser Engineering, Shenzhen University, Shenzhen 518060, China

⁴Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes, Shenzhen Technology University, Shenzhen 518118, China

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DOI: 10.1017/hpl.2020.7 Cite this Article Set citation alerts

Meng Wang, Yijian Huang, Zongpeng Song, Jincheng Wei, Jihong Pei, Shuangchen Ruan. Two-micron all-fiberized passively mode-locked fiber lasers with high-energy nanosecond pulse[J]. High Power Laser Science and Engineering, 2020, 8(2): 02000e14 Copy Citation Text

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Fig. 1. SMS fiber structure MMI: (a) structure configuration; (b) transmission characteristics^[31].

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Schematic configuration of SESA-based nanosecond TDFL. LD, laser diode; PC, polarization controller; CPS, cladding power stripper; SMF, single mode fiber.

Fig. 2. Schematic configuration of SESA-based nanosecond TDFL. LD, laser diode; PC, polarization controller; CPS, cladding power stripper; SMF, single mode fiber.

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Fig. 3. Output properties of the fiber laser without SA: (a) typical output spectra with and without the SMS fiber structure MMI; (b) output efficiencies of the fiber laser with and without the SMS fiber structure MMI.

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Fig. 4. Typical mode-locked properties of the fiber laser at pump power of ∼2.83 W: (a), (b) mode-locked pulses; (c) output spectrum; (d) output RF spectra.

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Fig. 5. (a) Mode-locked pulse envelopes at different pump powers; (b) pulse duration versus pump power.

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Fig. 6. (a) Average output power and pulse energy variance with the pump power; (b) peak power variance with the pump power.

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Fig. 7. Schematic configuration of CNTs-PVA-based nanosecond TDFL.

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Fig. 8. Saturable absorber properties of the CNTs-PVA.

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Fig. 9. Typical mode-locking performance of the CNT-based fiber laser at pump power of ∼2.12 W: (a) output spectrum; (b) output RF spectrum; (c), (d) mode-locked pulses.

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			Maximum output	Maximum pulse	Pulse
	SA	Wavelength (nm)	power (mW)	energy (nJ)	duration (ns)	Reference
‘Real’ SA	Graphene	1897.7–1930.2	∼33.9	35.2	∼122–143	[22]
	Graphene	2010.15	∼5.5	1.4	∼3.8–94.3	[25]
	CNTs	2003.1	∼46	26.8	∼9.3	Our work
	SESA	2002.9	∼461	141.7	∼1.6–9.1	Our work
‘Artificial’ SA	NPR	1960	∼95	/	∼304	[23]
	Self-mode-locking	1985.5	∼66.8	∼32.7	∼40	[24]
	NALM	1975.56	∼43.1	∼40.5	∼3.74–72.19	[28]
	NALM	1940.2–1969.2	∼60.73	∼19.51	∼0.48–6.19	[27]
	NALM	1985	∼670	∼400	∼50	[29]
	NOLM	1948.13	∼295	∼1.5 μJ	∼2.4–21.2	[30]
	NOLM	2005.9	∼1.4 W	∼353	∼1.9–13.7	[31]
	Intermode beating	1983	∼1.03 W	∼107	45	[35]