Reconversion of higher-order-mode (HOM) output from cladding-pumped hybrid Yb:HOM fiber amplifier

被引：10

作者：

Abedin, Kazi S. ^{[1
]}

Ahmad, Raja ^{[1
]}

DeSantolo, Anthony M. ^{[1
]}

DiGiovanni, David J. ^{[1
]}

机构：

[1] OFS Labs, 19 Schoolhouse Rd, Somerset, NJ 08873 USA

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 06期

关键词：

CONVERSION; AREA;

D O I：

10.1364/OE.27.008585

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate operation of a cladding-pumped hybrid ytterbium-doped HOM fiber amplifier and reconversion of the HOM output to Gaussian-like beam by using an axicon based reconversion system. The amplifier vs as constructed by concatenating single-mode and HOM ytterbium-doped double clad fibers, and was excited by a common multimode pump source. A continuous wave (cw) input signal of 97mW vs as amplified to 100W at the amplifier output, which yielded a gain of more than 30dB. The LP0,10 output of the HOM amplifier could be converted to a Gaussian-like beam with 67% conversion efficiency We present, both analytically and numerically, the effects of scaling the beam size on axicon's apex angle, and how shape imperfections affect the mode converter's performance. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：8585 / 8595

页数：11

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