Diameter-selected single-walled carbon nanotubes for the passive Q-switching operation at 2 μm

被引：9

作者：

Zhang, Xiaodong ^{[1
]}

Chu, Hongwei ^{[1
]}

Li, Ying ^{[2
]}

Zhao, Shengzhi ^{[1
]}

Li, Dechun ^{[1
]}

机构：

[1] Shandong Univ, Sch Informat Sci & Engn, Qingdao 266237, Peoples R China

[2] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China

来源：

OPTICAL MATERIALS | 2020年 / 100卷

基金：

中国国家自然科学基金;

关键词：

SWCNT saturable absorber; Nonlinear optical response; Q-switching; Liquid phase separation; MODE-LOCKING; SATURABLE ABSORBER; GRAPHENE; LASER; ENERGY;

D O I：

10.1016/j.optmat.2019.109627

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, we proposed the diameter-selected single-walled carbon nanotubes (SWCNTs) via the simple liquid phase separation for the pulsed 2 pm laser operation as the saturable absorber (SA). The nonlinear absorption properties of the prepared SWCNTs based SA at 2 pm were investigated. The modulation depth and the saturation intensity were 8% and 6.5 kW/cm(2), respectively. By employing the diameter-specified SWCNTs SA, a stable passively Q-switched Tm:YLF laser was demonstrated at 2 mu m for the first time. The maximum repetition rate of 35.9 kHz and the shortest pulse duration of 920 ns were achieved with the output coupler of T = 3%. The experiment results indicated that the diameter selection of SWCNTs could be a promising method to improve the Q-switching characteristics.

引用

页数：4

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