Thermally guided Yb-doped fiber-rod amplifier and laser

被引：6
|
作者：
Smith, C. R. [1 ]
Simakov, N. [1 ,2 ]
Hemming, A. [2 ]
Clarkson, W. A. [1 ]
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
[2] Def Sci & Technol Grp, Cyber & Elect Warfare Div, Laser Technol Grp, Edinburgh, SA 5111, Australia
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2019年 / 125卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
SILICA;
D O I：
10.1007/s00340-018-7126-3
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we describe a thermally guided fiber-rod amplifier and laser oscillator, which exploit thermal guiding to achieve mode control. This power scalable approach operates with mode sizes that are typically an order of magnitude larger than traditional single-mode fibers. Operating as an amplifier, we achieve a small-signal gain of 5dB at 1030nm whilst maintaining excellent beam quality (M-2<1.1). In a laser configuration, we obtained 13.1W of diffraction-limited (M-2<1.1) output power at 1032.5nm, with a slope efficiency 53% with respect to absorbed power. A model predicting beam evolution through the thermally guided fiber-rod gain medium is presented and validated.
引用
收藏
页数：10
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