Linearly polarized Q-switched pulse Yb fiber laser with average output power over 10 W

A fiber laser resonantly pumped Q-switched mode locked Er :YAG ceramic 1645 nm laser using graphene as the saturable absorber is realized. The mode-locked pulses with average output power of 320 mW, Q-switching envelope temporal width of 10 μs and mode-locking repetition rate of 83 MHz can readily be generated from the laser. To the best of our knowledge, this is the first report on the graphene-based Q-switching mode locked Er :YAG ceramic laser emitting around 1645 nm.

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Improved Laser Damage Threshold of In2Se3 Saturable Absorber by PVD for High-Power Mode-Locked Er-Doped Fiber Laser

Nanomaterials ◽

10.3390/nano9091216 ◽

2019 ◽

Vol 9 (9) ◽

pp. 1216 ◽

Cited By ~ 4

Author(s):

Han ◽

Zhang ◽

Jiang ◽

Zhang ◽

Li ◽

...

Keyword(s):

Fiber Laser ◽

Output Power ◽

Saturable Absorber ◽

High Power ◽

Average Output Power ◽

Damage Threshold ◽

Laser Damage Threshold ◽

Average Output ◽

Highly Nonlinear ◽

Er Doped

In this study, a double-end pumped high-power passively mode-locked erbium-doped fiber laser (EDFL) was realized by employing a few-layered In2Se3 flakes as a saturable absorber (SA). Herein, the uniform large-scale In2Se3 flakes were synthesized by the physical vapor deposition (PVD) method. The PVD-In2Se3 SA exhibited a remarkable damage threshold of higher than 24 mJ/cm2. Meanwhile, the PVD-In2Se3 SA had a modulation depth and saturable intensity of 18.75% and 6.8 MW/cm2, respectively. Based on the In2Se3 SA, the stable bright pulses emitting at 1559.4 nm with an average output power/pulse energy/pulse duration of 122.4 mW/5.8 nJ/14.4 ns were obtained successfully. To our knowledge, 122.4 mW was the new major breakthrough of mode-locked Er-doped fiber lasers. In addition, this is the first demonstration of the dark-bright pulse pair generation based on In2Se3 SA. The maximum average output power of the dark-bright pulse reached 121.2 mW, which also showed significant enhancement in comparison with previous works. Our excellent experiment results fully prove the superiority of our experimental design scheme and indicate that the PVD-In2Se3 could operate as a promising highly-nonlinear photonic material for a high-power fiber laser.

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A 20 W, Less-Than-1-kHz Linewidth Linearly Polarized All-Fiber Laser

Applied Sciences ◽

10.3390/app8122593 ◽

2018 ◽

Vol 8 (12) ◽

pp. 2593 ◽

Cited By ~ 3

Author(s):

Mingyuan Xue ◽

Cunxiao Gao ◽

Linquan Niu ◽

Shaolan Zhu ◽

Chuandong Sun ◽

...

Keyword(s):

Fiber Laser ◽

Output Power ◽

Continuous Wave ◽

Fiber Amplifiers ◽

Average Output ◽

Linearly Polarized ◽

Polarization Maintaining Fiber ◽

Polarization Maintaining ◽

Mode Area ◽

High Output

We report a continuous-wave high-output power and narrow-linewidth all-fiber laser at 1550 nm with the master oscillator power amplifier (MOPA) configuration. An all-fiber distributed feedback seed laser was boosted by three cascaded fiber amplifiers. In the experiment, we adopted a large-mode-area (LMA) Er3+:Yb3+-co-doped polarization-maintaining fiber to increase nonlinear thresholds and avoided the broadening of the laser linewidth. A linear-polarization fiber laser with average output power of 20 W, linewidth of 0.88 kHz, and power jitter less than 2% was finally achieved.

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