scholarly journals Experimental Investigation of Actively Q-Switched Er3+:ZBLAN Fiber Laser Operating at around 2.8 µm

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4642 ◽  
Author(s):  
Lukasz Sojka ◽  
Lukasz Pajewski ◽  
Samir Lamrini ◽  
Mark Farries ◽  
Trevor M. Benson ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Pump Power ◽  
Fiber Laser ◽  
Pulse Energy ◽  
Repetition Rate ◽  
Pulse Repetition Rate ◽  
Fiber Length ◽  
Peak Power ◽  
Transverse Mode ◽  
Diode Pumped

A diode-pumped Q-switched Er3+:ZBLAN double-clad, single-transverse mode fiber laser is practically realized. The Q-switched laser characteristics as a function of pump power, repetition rate, and fiber length are experimentally investigated. The results obtained show that the Q-switched operation with 46 µJ pulse energy, 56 ns long pulses, and 0.821 kW peak power is achieved at a pulse repetition rate of 10 kHz. To the best of our knowledge, this is the highest-ever demonstrated peak power emitted from an actively Q-switched, single-transverse mode Er3+:ZBLAN fiber laser operating near 2.8 µm.

scholarly journals An Eye-Safe, SBS-Free Coherent Fiber Laser LIDAR Transmitter with Millijoule Energy and High Average Power

Photonics ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 15
Author(s):  
Mehmetcan Akbulut ◽  
Leonid Kotov ◽  
Kort Wiersma ◽  
Jie Zong ◽  
Maohe Li ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Repetition Rate ◽  
Peak Power ◽  
Figure Of Merit ◽  
Current System ◽  
Glass Fibers ◽  
Average Power ◽  
High Gain ◽  
Short Length ◽  
High Average Power

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.

scholarly journals Graphene slurry based passive Q-switcher in erbium doped fiber laser

2019 ◽  
Vol 8 (4) ◽  
Author(s):  
Siti Nur Fatin Zuikafly ◽  
Nor Farhah Razak ◽  
Rizuan Mohd Rosnan ◽  
Sulaiman Wadi Harun ◽  
Fauzan Ahmad
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Pulse Width ◽  
Peak Power ◽  
Signal To Noise Ratio ◽  
Pulsed Laser ◽  
Laser Cavity ◽  
Signal To Noise ◽  
Maximum Pulse Energy ◽  
Erbium Doped

In this work, a Graphene slurry based passive Q-switcher fabricated from Graphene-Polylactic acid (PLA) filament which is used for 3D printing. To produce the Graphene slurry, the diameter of the filament was reduced and Tetrahydrofuran (THF) was used to dissolve the PLA. The Graphene-THF suspension was drop cast to the end of a fiber ferrule and the THF then evaporated to develop Graphene slurry based SA which is integrated in fiber laser cavity. At threshold input pump power of 30.45 mW, a Q-switched Erbium-doped fiber laser (EDFL) can be observed with the wavelength centered at 1531.01 nm and this remained stable up to a pump power of 179.5 mW. As the pump power was increased gradually, an increase in the repetition rates was recorded from 42 kHz to 125 kHz, while the pulse width was reduced to 2.58 μs from 6.74 μs. The Q-switched laser yielded a maximum pulse energy and peak power of 11.68 nJ and 4.16 mW, respectively. The proposed Graphene slurry based saturable absorber also produced a signal-to-noise ratio of 44 dB indicating a stable Q-switched pulsed laser.

scholarly journals Diode-pumped femtosecond solid-state waveguide laser with a 49 GHz pulse repetition rate

2012 ◽  
Vol 37 (21) ◽  
pp. 4416 ◽  
Author(s):  
A. Choudhary ◽  
A. A. Lagatsky ◽  
P. Kannan ◽  
W. Sibbett ◽  
C. T. A. Brown ◽  
...  
Keyword(s):  
Solid State ◽  
Repetition Rate ◽  
Pulse Repetition Rate ◽  
Pulse Repetition ◽  
Waveguide Laser ◽  
Diode Pumped

Improvements of Soliton Pulse Energy and Peak Power in Thulium-Doped Fiber Laser

2019 ◽  
Vol 31 (11) ◽  
pp. 909-912
Author(s):  
Desheng Zhao ◽  
Tianshu Wang ◽  
Wanzhuo Ma ◽  
Runmin Liu ◽  
Peng Lin ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Pulse Energy ◽  
Peak Power ◽  
Soliton Pulse

Passively harmonic mode-locked fiber laser based on ReS2 saturable absorber

2017 ◽  
Vol 31 (18) ◽  
pp. 1750206 ◽  
Author(s):  
Feifei Lu
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Output Power ◽  
Saturable Absorber ◽  
Repetition Rate ◽  
Mode Locking ◽  
High Repetition Rate ◽  
Pulse Interval ◽  
Saturable Absorption ◽  
Harmonic Mode

We demonstrate the generation of harmonic mode-locking (HML) in an erbium-doped fiber laser with a microfiber-based rhenium disulfide (ReS2) saturable absorber (SA). Taking advantages of both saturable absorption and large third-order nonlinear effect of ReS2, HML pulse with 318.5 MHz repetition rate can be obtained, corresponding to 168th harmonic of fundamental repetition frequency of 1.896 MHz. When the pump power is increased gradually, the pulse interval remains constant, while the output power increases linearly. At the pump power of 450 mW, the output power is [Formula: see text]12 mW. The proposed high-repetition-rate pulse lasers would attract considerable attention due to its potential applications in soliton communications and frequency combs.

All-fiber sub-20 ps ultra low repetition rate high peak power mode-locked fiber laser to generate supercontinuum

2020 ◽  
Vol 17 (2) ◽  
pp. 025104 ◽  
Author(s):  
M R K Soltanian ◽  
P Long ◽  
Q S Goher ◽  
F Légaré
Keyword(s):  
Fiber Laser ◽  
Repetition Rate ◽  
Peak Power ◽  
High Peak ◽  
High Peak Power ◽  
Power Mode
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