171st-order harmonic soliton erbium-doped fiber laser based on 2H-MoTe2 saturable absorber

被引：1

作者：

Liu, Hai-Yan ^{[1
]}

Zhang, Ze-Xin ^{[1
]}

Xv, Lu-Feng ^{[1
]}

Tian, Jin-Rong ^{[1
]}

Song, Yan-Rong ^{[1
]}

机构：

[1] Beijing Univ Technol, Fac Sci, Beijing 100124, Peoples R China

来源：

LASER PHYSICS LETTERS | 2024年 / 21卷 / 06期

基金：

中国国家自然科学基金;

关键词：

mode-locked fiber laser; harmonic mode-locking; 2H-MoTe2; MODE-LOCKED FIBER; FEMTOSECOND; GENERATION;

D O I：

10.1088/1612-202X/ad3cbe

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have demonstrated a high order harmonic mode-locked erbium-doped fiber laser by utilizing 2H-MoTe2 film as a saturable absorber (SA). The SA is synthesized by depositing 2H-MoTe2 film on a D-shaped fiber. The nonlinear optical properties of the 2H-MoTe2 SA are characterized, showing a modulation depth of 14.7% and a saturation intensity of 3 GW cm(-2). Through optimizing the pump power and intra-cavity polarization state, a 171st-order harmonic soliton at 0.9 GHz repetition frequency with a pulse width of 1.06 ps was obtained. The fundamentally mode-locked pulse train had a pulse width of 1.03 ps and a repetition rate of 5.33 MHz. To the best of our knowledge, the 171st-order harmonic soliton is the highest operating repetition frequency that has ever been demonstrated in a 2H-MoTe2 SA mode locked fiber laser. The results indicate the potential of 2H-MoTe2 SA at high repetition rates regimes, which could benefit for future possible application.

引用

页数：6

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