Cladding waveguide lasers in femtosecond laser written Nd: KGW waveguides

被引:6
|
作者
Li, Shi-Ling [1 ]
Ye, Yong-Kai [2 ]
Wang, Hai-Long [1 ]
机构
[1] Qufu Normal Univ, Sch Phys & Phys Engn, Shandong Prov Key Lab Laser & Informat Technol, Qufu 273165, Shandong, Peoples R China
[2] Qufu Normal Univ, Sch Software Engn, Qufu 273165, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
Optical waveguides; Waveguide lasers; Nd:KGW crystal; Femtosecond laser writing; INSCRIPTION; CRYSTAL; OPERATION; GLASS;
D O I
10.1016/j.optmat.2020.110517
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Buried cladding waveguides in Nd:KGW crystals were fabricated by femtosecond laser writing at a repetition rate of 500 kHz. Excellent waveguiding performance with low insertion loss of 1.8 dB at 1.06 mu m wavelength was obtained. The waveguide is also characterized by Raman spectroscopy. Under optical pump of 806 nm light, continuous-wave waveguide lasers at 1067 nm have been achieved at room temperature. Fundamentaland high-order-mode guiding and lasing were realized by varying the waveguide diameter. A 40-mu m diameter waveguide generates the maximum output power 198.5 mW with a slope efficiency of 39.4%.
引用
收藏
页数:5
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