Two types of ultrafast mode-locking operations from an Er-doped fiber laser based on germanene nanosheets

doi:10.1007/s12200-023-00068-1

Front. Optoelectron.

2023, Vol. 16

Issue (2) : 13 https://doi.org/10.1007/s12200-023-00068-1

RESEARCH ARTICLE

Two types of ultrafast mode-locking operations from an Er-doped fiber laser based on germanene nanosheets

Baohao Xu¹, Zhiyuan Jin¹, Lie Shi¹, Huanian Zhang², Qi Liu³, Peng Qin³, Kai Jiang¹, Jing Wang¹, Wenjing Tang¹(

), Wei Xia¹(

)

¹. School of Physics and Technology, University of Jinan, Jinan 250022, China
². School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255049, China
³. Shandong Huaguang Optoelectronics Co., Ltd., Jinan 250101, China

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Abstract

As a member of Xenes family, germanene has excellent nonlinear saturable absorption characteristics. In this work, we prepared germanene nanosheets by liquid phase exfoliation and measured their saturation intensity as 0.6 GW/cm² with a modulation depth of 8%. Then, conventional solitons with a pulse width of 946 fs and high-energy noise-like pulses with a pulse width of 784 fs were obtained by using germanene nanosheet as a saturable absorber for a mode-locked Erbium-doped fiber laser. The characteristics of the two types of pulses were investigated experimentally. The results reveal that germanene has great potential for modulation devices in ultrafast lasers and can be used as a material for creation of excellent nonlinear optical devices to explore richer applications in ultrafast photonics.

Keywords Fiber laser Germanene Mode-locked Noise-like pluses

Corresponding Author(s): Wenjing Tang,Wei Xia

About author: ^* These authors contributed equally to this work.

Issue Date: 04 July 2023

Cite this article:

Baohao Xu,Zhiyuan Jin,Lie Shi, et al. Two types of ultrafast mode-locking operations from an Er-doped fiber laser based on germanene nanosheets[J]. Front. Optoelectron., 2023, 16(2): 13.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-023-00068-1
https://academic.hep.com.cn/foe/EN/Y2023/V16/I2/13

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