Comparative study of Yb:KYW planar waveguide lasers Q-switched by direct- and evanescent-field interaction with carbon nanotubes

被引：14

作者：

Kim, Jun Wan ^{[1
]}

Choi, Sun Young ^{[2
]}

Bae, Ji Eun ^{[2
]}

Kim, Mi Hye ^{[3
]}

Jeong, Young Uk ^{[3
]}

Kifle, Esrom ^{[4
]}

Mateos, Xavier ^{[4
]}

Aguilo, Magdalena ^{[4
]}

Diaz, Francesc ^{[4
]}

Griebner, Uwe ^{[5
]}

Petrov, Valentin ^{[5
]}

Kim, Guang-Hoon ^{[1
]}

Rotermund, Fabian ^{[2
]}

机构：

[1] KERI, Med Device Res Ctr, Ansan 15588, South Korea

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

[3] KAERI, Radiat Ctr Ultrafast Sci, Daejeon 34057, South Korea

[4] Univ Rovira & Virgili, Fis & Cristallog Mat & Nanomat FiCMA FiCNA, E-43007 Tarragona, Spain

[5] Max Born Inst Nonlinear Opt & Short Pulse Spect, D-12489 Berlin, Germany

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

LAYERS; LU3+; GHZ;

D O I：

10.1364/OE.27.001488

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Both direct- and evanescent-field interactions with carbon nanotubes (CNTs) are applied to achieve stable Q-switched operation of Yb:KYW planar waveguide lasers. The performance characteristics were investigated in a same cavity configuration and analyzed in detail in the following three cases, CNTs deposited onto end mirror (M-coating), output coupler (OC-coating) and top surface of the planar waveguide (WG-coating). Maximum output powers, repetition rates, and minimum pulse durations are 61 mW, 1103 kHz and 215 ns for OC-coating, 39 mW, 1052 kHz and 275 ns for WG-coating, and 26 mW, 1119 kHz and 217 ns for M-coating, respectively. From the calculation of the configuration-dependent stability range, the beam size and the electric field distribution in the Yb:KYW planar waveguide, it is confirmed that the evanescent-field interaction scheme makes stable Q-switching possible with much lower intensities at saturable absorber compared to the direct-field interaction scheme in the presented waveguide laser operation. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：1488 / 1496

页数：9

共 29 条

[1] Compact ultrafast semiconductor disk laser: targeting GFP based nonlinear applications in living organisms [J].