10 watt-level tunable narrow linewidth $1.5~\unicode[STIX]｛x03BC｝\text｛m｝$ all-fiber amplifier

Ni Tang; Zhiyue Zhou; Zhixian Li; Zefeng Wang

doi:doi:10.1017/hpl.2018.26

High Power Laser Science and Engineering, 2018, 6 (2): 02000e33, Published Online: Jul. 4, 2018

10 watt-level tunable narrow linewidth $1.5~\unicode[STIX]｛x03BC｝\text｛m｝$ all-fiber amplifier Download： 569次

Ni Tang ^1,2,3Zhiyue Zhou ^1,2,3Zhixian Li ^1,2,3Zefeng Wang ^1,2,3,*

Author Affiliations

¹ College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

² Hunan Provincial Collaborative Innovation Center of High Power Fiber Laser, Changsha 410073, China

³ Hunan Provincial Key Laboratory of High Energy Laser Technology, Changsha 410073, China

Figures & Tables

Fig. 1. (a) Energy level scheme of ; (b) absorption and emission spectra of Er-doped fibers^[14].

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Fig. 2. Experimental setup of the 10 watt-level narrow linewidth tunable all-fiber amplifier. CW: continuous wave; ISO: isolator; WDM: wavelength division multiplexing; EDFC-980-HP: model of erbium-doped fibers; EYDF-12/130: model of erbium–ytterbium co-doped fibers, core diameter , cladding diameter .

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Fig. 3. (a) Evolutions of laser output power with the pump diode laser power of the second stage of the fiber amplifier at different wavelengths (inset: maximum laser power as a function of laser wavelength); (b) the optical spectra at different laser wavelengths with maximum pump power, measured using an optical spectral analyzer (OSA, Yokogawa, AQ6375B, spectra 1200–2400 nm) with scanning resolution of 0.05 nm.

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Fig. 4. The output laser spectra of different wavelengths as a function of different pump power of the power amplifier: (a)–(f) corresponding to center wavelengths of 1540 nm, 1550 nm, 1560 nm, 1570 nm, 1575 nm and 1580 nm, respectively.

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Fig. 5. (a) Measurement setup for the laser linewidth using scanning Fabry–Perot interferometers; (b) the measured line shapes with pump power 15.8 W at center wavelength 1550 nm.

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Table1. The evolution of the measured laser linewidth with the output power at different wavelengths.

1535 nm		1550 nm		1570 nm
Laser		Laser		Laser
power (W)	(MHz)	power (W)	(MHz)	power (W)	(MHz)
1.65	151	2.38	157	2.53	299
2.61	219	3.42	166	3.54	254
3.52	202	4.40	180	4.45	279
4.54	236	5.45	165	5.47	255
5.50	203	6.43	181	6.35	262
6.36	186	7.28	180	7.14	256
7.32	169	8.24	187	8.02	210
8.30	253	9.20	187	8.87	311
9.42	220	10.23	194	9.84	316
10.50	253	11.20	217	10.82	267

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Ni Tang, Zhiyue Zhou, Zhixian Li, Zefeng Wang. 10 watt-level tunable narrow linewidth $1.5~\unicode[STIX]｛x03BC｝\text｛m｝$ all-fiber amplifier[J]. High Power Laser Science and Engineering, 2018, 6(2): 02000e33.

10 watt-level tunable narrow linewidth $1.5~\unicode[STIX]｛x03BC｝\text｛m｝$ all-fiber amplifier Download： 569次

Fig. 1. (a) Energy level scheme of ; (b) absorption and emission spectra of Er-doped fibers^[14].

Fig. 4. The output laser spectra of different wavelengths as a function of different pump power of the power amplifier: (a)–(f) corresponding to center wavelengths of 1540 nm, 1550 nm, 1560 nm, 1570 nm, 1575 nm and 1580 nm, respectively.

Fig. 5. (a) Measurement setup for the laser linewidth using scanning Fabry–Perot interferometers; (b) the measured line shapes with pump power 15.8 W at center wavelength 1550 nm.

Table1. The evolution of the measured laser linewidth with the output power at different wavelengths.

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10 watt-level tunable narrow linewidth $1.5~\unicode[STIX]｛x03BC｝\text｛m｝$ all-fiber amplifier Download： 569次

Fig. 1. (a) Energy level scheme of ; (b) absorption and emission spectra of Er-doped fibers[14].

Fig. 4. The output laser spectra of different wavelengths as a function of different pump power of the power amplifier: (a)–(f) corresponding to center wavelengths of 1540 nm, 1550 nm, 1560 nm, 1570 nm, 1575 nm and 1580 nm, respectively.

Fig. 5. (a) Measurement setup for the laser linewidth using scanning Fabry–Perot interferometers; (b) the measured line shapes with pump power 15.8 W at center wavelength 1550 nm.

Table1. The evolution of the measured laser linewidth with the output power at different wavelengths.

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Fig. 1. (a) Energy level scheme of ; (b) absorption and emission spectra of Er-doped fibers^[14].