Higher order mode selection for power scaling in laser resonators using transmitting Bragg gratings

被引：0

作者：

Anderson, Brian M. ^{[1
]}

Venus, George ^{[1
]}

Ott, Dan ^{[1
]}

Hale, Evan ^{[1
]}

Divliansky, Ivan ^{[1
]}

Drachenberg, Derrek R. ^{[2
]}

Dawson, Jay ^{[2
]}

Messerly, Mike J. ^{[2
]}

Pax, Paul H. ^{[2
]}

Tassano, John B. ^{[2
]}

Glebov, Leonid B. ^{[1
]}

机构：

[1] Univ Cent Florida, Coll Opt & Photon, CREOL, Orlando, FL 32816 USA

[2] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

来源：

LASER TECHNOLOGY FOR DEFENSE AND SECURITY XI | 2015年 / 9466卷

关键词：

Multiplexed VBG; PTR; higher order mode; ribbon fiber; mode selection; mode conversion; FIBER LASERS; OPERATION; AREA;

D O I：

10.1117/12.2177060

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：

Power scaling using a higher order mode in a ribbon fiber has previously been proposed. However, methods of selecting the higher order mode and converting to a single lobe high brightness beam are needed. We propose using a multiplexed transmitting Bragg grating (MTBG) to convert a higher order mode into a single lobe beam. Using a ribbon fiber with core dimensions of 107.8 mu m by 8.3 mu m, we use the MTBG to select a higher order mode oscillating within the resonator with 51.4% efficiency, while simultaneously converting the higher order mode to a beam with diffraction limited divergence of 10.2 mrad containing 60% of the total power.

引用

页数：9

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