A comparison of mode instability in Yb- and Tm-doped fiber amplifiers

被引：0

作者：

Smith, Arlee V. ^{[1
]}

Smith, Jesse J. ^{[1
]}

机构：

[1] AS Photon LLC, 6916 Montgomery Blvd NE,Suite B8, Albuquerque, NM 87109 USA

来源：

FIBER LASERS XIII: TECHNOLOGY, SYSTEMS, AND APPLICATIONS | 2016年 / 9728卷

关键词：

fiber amplifiers; mode instability; Yb-doped fiber; Tm-doped fiber; large mode area; stimulated thermal Rayleigh scattering; mode coupling; bandwidth; THRESHOLDS; IMPACT;

D O I：

10.1117/12.2209189

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：

We use a detailed numerical model of stimulated thermal Rayleigh scattering to compare mode instability thresholds in cladding pumped Tm3+-doped and Yb3+-doped fiber amplifiers. The Tm-doped fiber amplifies 2040 nm light using a 790 nm pump; the Yb-doped fiber amplifies 1060 nm light using a 976 nm pump. The predicted instability threshold of the Tm-doped fiber is found to be higher than that of the Yb-doped fiber, even though its heat load is much higher. We attribute the higher threshold in part to its longer signal wavelength, and in part to stronger gain saturation.

引用

页数：10

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