Thermal Lensing and Multiwatt Microchip Laser Operation of Yb:YCOB Crystals

被引：40

作者：

Loiko, Pavel ^{[1
,2
]}

Maria Serres, Josep ^{[2
]}

Mateos, Xavier ^{[2
,3
]}

Yu, Haohai ^{[4
]}

Zhang, Huaijin ^{[4
]}

Liu, Junhai ^{[5
]}

Yumashev, Konstantin ^{[1
]}

Griebner, Uwe ^{[3
]}

Petrov, Valentin ^{[3
]}

Aguilo, Magdalena ^{[2
]}

Diaz, Francesc ^{[2
]}

机构：

[1] Belarusian Natl Tech Univ, Ctr Opt Mat & Technol, Minsk 220013, BELARUS

[2] Univ Rovira & Virgili URV, Fis Cristal Lografia Mat & Nanomat FiCMA, Tarragona 43007, Spain

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

[4] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[5] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2016年 / 8卷 / 03期

关键词：

Diode-pumped lasers; microchip; thermal lensing; oxoborates; NONLINEAR-OPTICAL PROPERTIES; CONTINUOUS-WAVE; YB; YCA4O(BO3)(3); GDCOB; YCOB; PERFORMANCE; GENERATION; EFFICIENT; GROWTH;

D O I：

10.1109/JPHOT.2016.2555584

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Thermal lensing is studied in monoclinic Yb:Ca4YO(BO3)(3) (Yb:YCOB) oxoborate crystals cut along the optical indicatrix axes. For all orientations, the thermal lens is positive. In the Z-cut crystal, the sensitivity factors of the thermal lens are MZ-X = 2.4 and MZ-Y = 2.8 m(-1)/W (for E parallel to X), and the astigmatism degree is as low as S/M = 14%. The positive thermal lens in Yb:YCOB is related to the large thermal expansion and strong photoelastic effect. Microchip lasers are realized with 3-mm-long X, Y, and Z-cut 15 at.% Yb:YCOB crystals. With a Z-cut crystal, maximum output power of 8.35 W is achieved at similar to 1040 nm with slope efficiency of 70%. Using various crystal cuts and output coupler transmissions, multiwatt emission in the spectral range of 1033-1091 nm is demonstrated.

引用

页数：12

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