scholarly journals Numerical Study on the Soliton Mode-Locking of the Er3+-Doped Fluoride Fiber Laser at ~3 μm with Nonlinear Polarization Rotation

Photonics ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 25 ◽  
Author(s):  
Feijuan Zhang ◽  
Wenyan Yan ◽  
Shengnan Liang ◽  
Chao Tan ◽  
Pinghua Tang
Keyword(s):  
Fiber Laser ◽  
Fiber Lasers ◽  
Numerical Study ◽  
High Energy ◽  
Mode Locking ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Fiber Ring ◽  
Fluoride Fiber ◽  
Nonlinear Polarization Rotation

Recent interest in the application of mid-infrared (mid-IR) lasers has made the generation of ~3 µm ultrafast pulses a hot topic. Recently, the generation of femtosecond-scale pulses in Er3+-doped fluoride fiber lasers has been realized by nonlinear polarization rotation (NPR). However, a numerical study on these fiber lasers has not been reported yet. In this work, the output properties of the NPR passively mode-locked Er3+-doped fluoride fiber ring laser in ~3 µm have been numerically investigated based on the coupled Ginzburg–Landu equation. The simulation results indicate that stable uniform solitons (0.75 nJ) with the pulse duration of femtosecond-scale can be generated from this fiber laser. This numerical investigation can provide some reference for developing the high energy femtosecond soliton fiber lasers in the mid-IR.

scholarly journals Q-switched mode locking noise-like pulse generation from a thulium-doped all-fiber laser based on nonlinear polarization rotation

2021 ◽  
pp. 100115
Author(s):  
R. López Estopier ◽  
A. Camarillo Avilés ◽  
M. Bello Jiménez ◽  
O. Pottiez ◽  
M. Durán Sánchez ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Mode Locking ◽  
Pulse Generation ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Nonlinear Polarization Rotation

Multi-wavelength Thulium-doped Mode-locking Fiber Laser Based on Nonlinear Polarization Rotation

2016 ◽  
Vol 45 (6) ◽  
pp. 614003 ◽  
Author(s):  
刘鹏 LIU Peng ◽  
王天枢 WANG Tian-shu ◽  
张鹏 ZHANG Peng ◽  
张岩 ZHANG Yan ◽  
马万卓 MA Wan-zhuo ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Mode Locking ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Multi Wavelength ◽  
Nonlinear Polarization Rotation

Spatio-spectral dynamics of soliton pulsation with breathing behavior in the anomalous dispersion fiber laser

2021 ◽  
Author(s):  
Ying Han ◽  
Bo Gao ◽  
Jiayu Huo ◽  
Chunyang Ma ◽  
Ge Wu ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Simulation Model ◽  
Fiber Laser ◽  
Numerical Study ◽  
Fourier Method ◽  
Polarization Rotation ◽  
Laser Mode ◽  
Nonlinear Polarization ◽  
Rotation Technique ◽  
Nonlinear Polarization Rotation

Abstract We have numerically and experimentally observed the soliton pulsation with obvious breathing behavior in the anomalous fiber laser mode-locked by nonlinear polarization rotation technique. The numerical study of the soliton pulsation with breathing behavior was analyzed through the split-step Fourier method at first, and it was found that the phase difference caused by the polarization controller would affect the breathing characteristics. Then, taking advantage of the dispersive Fourier transform technique, we confirmed the breathing characteristic of soliton pulsation in the same fiber laser as the simulation model experimentally. These results complement the research on the breathing characteristic of soliton pulsation.

Optimization of a mode-locked fiber laser based on nonlinear polarization rotation using genetic algorithm

2020 ◽  
pp. 20-30
Author(s):  
Дарья Алексеевна Художиткова
Keyword(s):  
Genetic Algorithm ◽  
Fiber Laser ◽  
Hybrid Model ◽  
Fiber Lasers ◽  
Single Pulse ◽  
Scalar Model ◽  
Polarization Rotation ◽  
Nonlinear Polarization ◽  
Nonlinear Polarization Rotation

Выполнено математическое моделирование волоконного лазера с синхронизацией мод на основе эффекта нелинейного вращения поляризации. Проведена оптимизация лазера с использованием генетического алгоритма. В результате были определены параметры лазерного резонатора, при которых достигается наибольшая энергия выходного импульса Purpose. The article addresses optimization of mode-locked fiber laser based on nonlinear polarization rotation. Determination of the resonator parameters corresponding to the single-pulse with the highest energy has been performed using the genetic algorithm. Metodology. Mathematical modelling has been carried out with the help of two models, namely, scalar and hybrid. Scalar model describes signal propagation by generalized nonlinear Schr¨odinger equation. Hybrid model describes section of DCF by pair of generalized nonlinear Schrodinger equations. Numerical simulation has been performed by the split-step Fourier method. Genetic algorithm has been implemented as SteadyState method by GALib library. The value of the fitness function is equal to the energy value for the single-pulse and otherwise zero. Findings. The genetic algorithm has been implemented for solving optimization problem of fiber lasers and modifying the algorithm to reduce the calculation time. The parameters of the laser for the scalar model are determined and agreement with the results obtained by the enumeration method is presented. For the hybrid model, a stable pulse with three times the energy was found. Conclusions. In this work, a determination of the optimal parameters for mode-locked fiber lasers based on nonlinear polarization rotation was presented. The problem was solved using a genetic algorithm. This is the first step towards creating a “smart” self-tuning laser

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