1 kW peak power, 110 ns single-frequency thulium doped fiber amplifier at 2050 nm

被引：30

作者：

Lucas, Erik ^{[1
]}

Lombard, Laurent ^{[2
]}

Jaouen, Yves ^{[3
]}

Bordais, Sylvain ^{[1
]}

Canat, Guillaume ^{[2
]}

机构：

[1] Keopsys, F-22300 Lannion, France

[2] Off Natl Etud & Rech Aerosp, French Aerosp Lab, F-91123 Palaiseau, France

[3] Telecom ParisTech, Inst Telecom, F-75634 Paris, France

来源：

APPLIED OPTICS | 2014年 / 53卷 / 20期

关键词：

2; MU-M; STIMULATED BRILLOUIN-SCATTERING; GERMANATE FIBERS; OPTICAL-FIBERS; SBS THRESHOLD; LASER; MODE; SUPPRESSION; RAMAN;

D O I：

10.1364/AO.53.004413

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a high power, single frequency, linearly polarized master oscillator power amplifier emitting 110 ns, 1 kW peak power pulses at 2050 nm. A 20% slope efficiency and a beam quality of M-2 = 1.21 are achieved with three-stage double-clad Tm3+-doped fiber architecture. Various pump schemes are compared leading to the conclusion that 793 nm pump wavelength is the most efficient for amplification at 2050 nm. Based on numerical simulations, the Brillouin gain coefficient around 2 mu m in Tm3+ highly doped silica fiber is estimated to 1.2 x 10(-11) m/W. Output peak power is limited by stimulated Brillouin scattering to 535 W without mitigation and to 1 kW with application of a strain distribution along the doped fiber. (C) 2014 Optical Society of America

引用

页码：4413 / 4419

页数：7

共 31 条

[1] NOISE INITIATION OF STIMULATED BRILLOUIN-SCATTERING [J].