Optimal Design and Simulation of High Power Tm<sup>3+</sup> Self-similar Pulse Laser

Zheng-nan SHI; Feng-ping YAN; Wen-guo HAN; Lu-na ZHANG

doi:10.3788/fgxb20204106.0719

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Optimal Design and Simulation of High Power Tm³⁺ Self-similar Pulse Laser

Device Fabrication and Physics | 更新时间：2020-09-15

- Optimal Design and Simulation of High Power Tm³⁺ Self-similar Pulse Laser
- Chinese Journal of Luminescence Vol. 41, Issue 6, Pages: 719-728(2020)
- 作者机构：
  
  1.北京交通大学光波技术研究所全光网络与现代通信网教育部重点实验室, 北京 100044
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China;Supported by National Natu
- DOI：10.3788/fgxb20204106.0719
  CLC：
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Zheng-nan SHI, Feng-ping YAN, Wen-guo HAN, et al. Optimal Design and Simulation of High Power Tm³⁺ Self-similar Pulse Laser. [J]. Chinese Journal of Luminescence 41(6):719-728(2020)
DOI：

Zheng-nan SHI, Feng-ping YAN, Wen-guo HAN, et al. Optimal Design and Simulation of High Power Tm³⁺ Self-similar Pulse Laser. [J]. Chinese Journal of Luminescence 41(6):719-728(2020) DOI： 10.3788/fgxb20204106.0719.

摘要

利用非线性薛定谔方程（NLSE）为2 μm掺Tm,3+,自相似脉冲激光器建立了一种新的数值模型。模型中，用NLSE描述脉冲在激光器中的产生和传播，利用MATLAB软件模拟了脉冲在激光腔内的演化特性，优化了腔内净色散、增益系数和可饱和吸收体等参数，得到了典型的2 μm自相似脉冲的产生区域和特点。在最佳运行范围内，通过仿真得到了能量为7.87 nJ、脉宽为30.58 ps的具有严格正啁啾的高功率抛物线型脉冲。同时，分析了腔内净色散、增益系数和可饱和吸收体等参数对自相似脉冲产生的影响，并模拟了光栅器件进行色散补偿，使输出脉宽达到547 fs，脉冲峰值功率达到20.85 kW。本文为获得高功率自相似脉冲提供了指导性意见。

Abstract

A new numerical model for a 2 μm thulium-doped self-similar pulsed laser was established using nonlinear Schr dinger equation (NLSE). In this model, NLSE was used to describe the generation and propagation of the pulse in the laser. The evolution of the pulse in the laser cavity was simulated using MATLAB software. The parameters such as the net dispersion, the gain coefficient and the saturable absorber were optimized. The typical 2 μm self-similar pulse generation area and characteristics were obtained through simulation. In the optimal operating range, a high-power parabolic pulse with strict positive chirp with the energy of 7.87 nJ and the pulse width of 30.58 ps was obtained. At the same time, the effects of parameters such as the net dispersion, the gain coefficient and absorber on the self-similar pulse were analyzed. We simulated the grating for dispersion compensation. The output pulse width reached 547 fs and the pulse peak power reached 20.85 kW. This paper gives guidance for obtaining high-power self-similar pulses.

关键词

2 μm自相似脉冲非线性薛定谔方程数值模拟光纤光学

Keywords

2 μm self-similar pulsenonlinear Schrödinger equationnumerical simulationfiber optics

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Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences

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University of Science and Technology of China

Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

Measurement Technology and Instrumentation Key Lab of Hebei Province, State Key Lab of Metastable Materials Science and Technology, Yanshan University

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Optimal Design and Simulation of High Power Tm3+ Self-similar Pulse Laser

DOI：10.3788/fgxb20204106.0719

摘要

Abstract

关键词

Keywords

references

Optimal Design and Simulation of High Power Tm³⁺ Self-similar Pulse Laser