Short mid-infrared watt-level all-fiber nonlinear pulse compressor above 100-MHz pulse repetition rate

Jingcheng Shang; Chao Mei; Shengzhi Zhao; Yizhou Liu; Kejian Yang; Chun Wang; Tao Li; Tianli Feng

doi:10.1017/hpl.2022.45

Journals >High Power Laser Science and Engineering >Volume 11 >Issue 1 >Page 01000e14 > Article

High Power Laser Science and Engineering
Vol. 11, Issue 1, 01000e14 (2023)

Short mid-infrared watt-level all-fiber nonlinear pulse compressor above 100-MHz pulse repetition rate

Jingcheng Shang^1、2, Chao Mei⁴, Shengzhi Zhao¹, Yizhou Liu¹, Kejian Yang^2、3、*, Chun Wang¹, Tao Li^1、2、3, and Tianli Feng^1、2、*

Author Affiliations

¹School of Information Science and Engineering, Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao, China

²Key Laboratory of Laser & Infrared System (Shandong University), Ministry of Education, Qingdao, China

³Institute of Novel Semiconductors, State Key Laboratory of Crystal Materials, Shandong University, Jinan, China

⁴Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services, SCCE, University of Science and Technology Beijing, Beijing, China

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DOI: 10.1017/hpl.2022.45 Cite this Article Set citation alerts

Jingcheng Shang, Chao Mei, Shengzhi Zhao, Yizhou Liu, Kejian Yang, Chun Wang, Tao Li, Tianli Feng. Short mid-infrared watt-level all-fiber nonlinear pulse compressor above 100-MHz pulse repetition rate[J]. High Power Laser Science and Engineering, 2023, 11(1): 01000e14 Copy Citation Text

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Abstract

We firstly report a 2-μm all-fiber nonlinear pulse compressor based on two pieces of normal dispersion fiber (NDF), which enables a high-power scaling ability of watt-level and a high pulse compression ratio of 13.7. With the NDF-based all-fiber nonlinear pulse compressor, the 450-fs laser pulses with a repetition rate of 101.4 MHz are compressed to 35.1 fs, corresponding to a 5.2 optical oscillation cycle at the 2-μm wavelength region. The output average power reaches 1.28 W, which is believed to be the highest value never achieved from the previous 2-μm all-fiber nonlinear pulse compressors with a high pulse repetition rate above 100 MHz. The dynamic evolution of the ultrafast pulse inside the all-fiber nonlinear pulse compressor is numerically analyzed, matching well with the experimental results.

Keywords

few-optical-cycle pulses high pulse repetition rate nonlinear pulse compression

$$\begin{align}&\frac{\partial A}{\partial z}+\frac{\mathrm{a}}{2}A+i\frac{\beta_2}{2}\frac{\partial^2A}{\partial {\tau}^2}-\frac{\beta_3}{6}\frac{\partial^3A}{\partial {\tau}^3}\nonumber\\ &\quad= i\gamma \left[{\left|A\right|}^2A+ iS\frac{\partial }{\partial \tau}\left({\left|A\right|}^2A\right)-R(t)A\frac{\partial }{\partial T}{\left|A\right|}^2\right].\end{align}$$

((1))