Carbon nanotube Q-switched Yb:KLuW surface channel waveguide lasers

被引：21

作者：

Bae, Ji Eun ^{[1
]}

Park, Tae Gwan ^{[1
]}

Kifle, Esrom ^{[2
]}

Mateos, Xavier ^{[2
]}

Aguilo, Magdalena ^{[2
]}

Diaz, Francesc ^{[2
]}

Romero, Carolina ^{[3
]}

Vazquez de Aldana, Javier Rodriguez ^{[3
]}

Lee, Hansuek ^{[1
,4
]}

Rotermund, Fabian ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon 34141, South Korea

[2] URV, Fis & Cristal Lografra Mat & Nanomat FiCMA FiCNA, E-43007 Tarragona, Spain

[3] Univ Salamanca, Aplicac Laser & Foton, E-37008 Salamanca, Spain

[4] Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Daejeon 34141, South Korea

来源：

OPTICS LETTERS | 2020年 / 45卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

GHZ; MOS2;

D O I：

10.1364/OL.45.000216

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A channel waveguide (WC) buried immediately below the surface of a Yb:KLuW crystal is used as a laser gain medium for passive Q-switching by both evanescent- and direct-field interactions with single-walled carbon nanotubes (SWCNTs) near 1040 nm. The SWCNTs used as saturable absorbers (SAs) are deposited on top of the half-ring-type channel WG fabricated via femtosecond direct laser writing. The Q-switched WC laser delivers 88.5 ns pulses at a 1.16 MHz repetition rate with a maximum average output power of 680 mW. For the two different interaction schemes with SWCNT-SAs, the pulse characteristics, depending on the output coupling ratio and absorbed pump power, are experimentally investigated and compared to the results of theoretical analyses of the SA Q-switched operation. (C) 2019 Optical Society of America

引用

页码：216 / 219

页数：4

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