Tunable Yb-doped fiber laser based on a FBG array and a theta ring resonator ensuring a constant repetition rate (Conference Presentation)

We report on an eye-safe, transform-limited, millijoule energy, and high average power fiber laser. The high gain and short length of the NP phosphate-glass fibers enable the SBS-free operation with kW level peak power. The output energy is up to 1.3 mJ, and the average power is up to 23 W at an 18 kHz repetition rate with 600 ns pulses (peak power > 2.1 kW). The PER is ≈16 dB and the M2 of the beam is 1.33 × 1.18. The coherent LIDAR Figure Of Merit (FOM) is 174 mJ*sqrt(Hz), which to our knowledge is the highest reported for a fiber laser. We also report 0.75 mJ energy and >3.7 kW peak power with down to 200 ns pulses and up to 1.21 mJ energy with a 3–5 kHz repetition rate operation of the current system.

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High-repetition-rate, sub-nanosecond and narrow-bandwidth fiber-laser-pumped green laser for photon-counting shallow-water bathymetric Lidar

Results in Physics ◽

10.1016/j.rinp.2020.103563 ◽

2020 ◽

Vol 19 ◽

pp. 103563

Author(s):

Xin Chen ◽

Wei Kong ◽

Tao Chen ◽

Hao Liu ◽

Genghua Huang ◽

...

Keyword(s):

Fiber Laser ◽

Shallow Water ◽

Repetition Rate ◽

Photon Counting ◽

Green Laser ◽

High Repetition Rate ◽

High Repetition ◽

Narrow Bandwidth

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Self-starting ultra-low repetition rate pulsed fiber laser generating from dual mode-locking technique

2017 Photonics North (PN) ◽

10.1109/pn.2017.8090572 ◽

2017 ◽

Cited By ~ 1

Author(s):

M. R. K. Soltanian ◽

Francois Legare ◽

Pin Long

Keyword(s):

Fiber Laser ◽

Repetition Rate ◽

Mode Locking ◽

Dual Mode ◽

Pulsed Fiber Laser

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Passively Mode-Locked Tm3+-Doped Fiber Laser With Gigahertz Fundamental Repetition Rate

IEEE Journal of Selected Topics in Quantum Electronics ◽

10.1109/jstqe.2017.2657489 ◽

2018 ◽

Vol 24 (3) ◽

pp. 1-6 ◽

Cited By ~ 20

Author(s):

Huihui Cheng ◽

Wei Lin ◽

Zhengqian Luo ◽

Zhongmin Yang

Keyword(s):

Fiber Laser ◽

Repetition Rate

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A Passively Q-Switched Holmium-Doped Fiber Laser with Graphene Oxide at 2058 nm

Applied Sciences ◽

10.3390/app11010407 ◽

2021 ◽

Vol 11 (1) ◽

pp. 407

Author(s):

Jinho Lee ◽

Ju Han Lee

Keyword(s):

Graphene Oxide ◽

Pump Power ◽

Fiber Laser ◽

Ring Resonator ◽

Continuous Wave ◽

Optical Power ◽

Polished Surface ◽

Fiber Ring ◽

Q Switching ◽

Side Polished Fiber

This study reports a Q-switching-based, 2058-nm holmium (Ho) fiber laser incorporating a saturable absorber (SA) based on graphene oxide (GO). The SA was prepared with a side-polished fiber, while GO particles were deposited onto the fiber-polished surface to realize an all-fiber SA. A continuous-wave thulium-doped all-fiber laser, which was configured with a master-oscillator power-amplifier (MOPA) structure, was constructed as a pumping source. By inserting the fabricated SA into an all-fiber ring resonator based on 1-m length of Ho-doped fiber, Q-switched pulses could readily be obtained at a wavelength of 2058 nm. The pulse width was observed to vary from 2.01 to 1.56 μs as the pump power was adjusted from ~759 to 1072 mW, while the repetition rate was tunable from 45.56 to 56.12 kHz. The maximum values of average optical power and pulse energy were measured as ~11.61 mW and 207.05 nJ, respectively, at a ~1072 mW pump power.

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