Highly efficient second-harmonic generation in a tellurite optical fiber

被引：22
|
作者：
Cheng, Tonglei [1 ]
Xiao, Yuzhe [2 ]
Li, Shuguang [1 ]
Yan, Xin [1 ]
Zhang, Xuenan [1 ]
Suzuki, Takenobu [3 ]
Ohishi, Yasutake [3 ]
机构：
[1] Northeastern Univ, Coll Informat Sci & Engn, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Liaoning, Peoples R China
[2] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA
[3] Toyota Technol Inst, Res Ctr Adv Photon Technol, Tempaku Ku, 2-12-1 Hisakata, Nagoya, Aichi 4688511, Japan
来源：
OPTICS LETTERS | 2019年 / 44卷 / 19期
基金：
中国国家自然科学基金; 日本学术振兴会;
关键词：
TERAHERTZ-WAVE GENERATION; SINGLE-MODE; PHASE; LASER;
D O I：
10.1364/OL.44.004686
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A step-index tellurite optical fiber with loss similar to 0.02 dB/m at similar to 1545 nm was fabricated based on TeO2 - Bi2O3 - ZnO-Na2O glass. With a nanosecond laser operated at similar to 1545 nm as the pump source, second-harmonic generation (SHG) was observed in the 2.5 m tellurite fiber with conversion efficiency up to similar to 1.15% at 20 mW, which, to the best of our knowledge, is the highest for non-silica optical fibers. The experimental phenomenon can be explained by the chi((2))-induced model of nonlinear polarization at the core cladding interface. Furthermore, it can also be explained by a chi((3)-)induced model via the four-wave-mixing effect, where a quasi-SH signal and a millimeter wave were generated simultaneously. This new model may help shed light on the physical mechanism of SHG in optical fibers. (C) 2019 Optical Society of America
引用
收藏
页码：4686 / 4689
页数：4
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