Transition of pulsed operation from Q-switching to continuous-wave mode-locking in a Yb:KLuW waveguide laser

被引：17

作者：

Bae, Ji Eun ^{[1
]}

Mateos, Xavier ^{[2
]}

Aguilo, Magdalena ^{[2
]}

Diaz, Francesc ^{[2
]}

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

Romero, Carolina ^{[3
]}

Lee, Hansuek ^{[1
,4
]}

Rotermund, Fabian ^{[1
]}

机构：

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

[2] Univ Rovira i Virgil URV, Fis & Cristablog Mat & Nanomat FiCMA FiCNA, Tarragona 43007, Spain

[3] Univ Salamanca, Aplicac Laser & Fotort, Salamanca 37008, Spain

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

来源：

OPTICS EXPRESS | 2020年 / 28卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

REPETITION RATE; GHZ; GENERATION;

D O I：

10.1364/OE.395701

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the diverse pulsed operation regimes of a femtosecond-laser-written Yb:KLuW channel waveguide laser emitting near 1040nm. By the precise position tuning of a carbon-nanotube-coated saturable absorber (SA) mirror, the transition of the pulsed operation from Q-switching, Q-switched mode-locking and finally sub-GHz continuous-wave mode-locking are obtained based on the interplay of dispersion and mode area control. The Q-switched pulses exhibit typical fast SA Q-switched pulse characteristics depending on absorbed pump powers. In the Q-switched mode-locking, amplitude modulations of the mode-locked pulses on the Q-switched envelope are observed. The radio-frequency spectrum represents the coexistence of Q-switching and mode-locking signals. In the purely mode-locked operation, the waveguide laser generates 2.05-ps pulses at 0.5 GHz. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：18027 / 18034

页数：8

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