Femtosecond-laser-written Tm:KLu(WO4)2 waveguide lasers

被引：47

作者：

Kifle, Esrom ^{[1
]}

Mateos, Xavier ^{[1
,2
]}

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

Rodenas, Airan ^{[1
,4
]}

Loiko, Pavel ^{[5
]}

Choi, Sun Yung ^{[6
]}

Rotermund, Fabian ^{[7
]}

Griebner, Uwe ^{[2
]}

Petrov, Valentin ^{[2
]}

Aguilo, Magdalena ^{[1
]}

Diaz, Francesc ^{[1
]}

机构：

[1] URV, Fis & Cristallog Mat & Nanomat FiCMA, Campus Sescelades,C Marcelli Domingo S-N, E-43007 Tarragona, Spain

[2] Max Born Inst Nonlinear Opt & Short Pulse Spec, Max Born Str 2a, D-12489 Berlin, Germany

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

[4] CNR, IFN, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

[5] ITMO Univ, 49 Kronverkskiy Pr, St Petersburg 197101, Russia

[6] Ajou Univ, Dept Energy Syst Res, Suwon 16499, South Korea

[7] Korea Adv Inst Sci & Technol, Dept Phys, 291 Daehak Ro, Daejeon 34141, South Korea

来源：

OPTICS LETTERS | 2017年 / 42卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

70-PERCENT SLOPE EFFICIENCY; DOUBLE TUNGSTATE; OUTPUT POWER; KLU(WO4)(2); DEVICES; GROWTH; GLASS; BULK;

D O I：

10.1364/OL.42.001169

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Depressed-index channel waveguides with a circular and photonic crystal cladding structures are prepared in a bulk monoclinic Tm:KLu(WO4)(2) crystal by 3D direct femto-second laser writing. The channel waveguide structures are characterized and laser operation is achieved using external mirrors. In the continuous-wave mode, the maximum output power of 46 mW is achieved at 1912 nm corresponding to a slope efficiency of 15.2% and a laser threshold of only 21 mW. Passive Q-switching of a waveguide with a circular cladding is realized using single-walled carbon nanotubes. Stable 7 nJ/50 ns pulses are achieved at a repetition rate of 1.48 MHz. This first demonstration of similar to 2 mu m fs-laser-written waveguide lasers based on monoclinic double tungstates is promising for further lasers of this type doped with Tm3+ and Ho3+ ions. (C) 2017 Optical Society of America

引用

页码：1169 / 1172

页数：4

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