2.05 kW all-fiber high-beam-quality fiber amplifier with stimulated Brillouin scattering suppression incorporating a narrow-linewidth fiber-Bragg-grating-stabilized laser diode seed source

被引：23

作者：

Lee, Junsu ^{[1
]}

Lee, Kwang Hyun ^{[1
]}

Jeong, Hwanseong ^{[1
]}

Park, Minkyu ^{[1
]}

Seung, Ji Hoon ^{[1
]}

Lee, Jung Hwan ^{[1
]}

机构：

[1] Agcy Def Dev, Ground Technol Res Inst, Daejeon 34186, South Korea

来源：

APPLIED OPTICS | 2019年 / 58卷 / 23期

关键词：

OSCILLATOR POWER-AMPLIFIER; SINGLE-MODE; CONTINUOUS-WAVE; AVERAGE-POWER; FREQUENCY; KILOWATT; INSTABILITIES; MODULATION; THRESHOLD; SYSTEMS;

D O I：

10.1364/AO.58.006251

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally demonstrate an all-fiber high-power fiber amplifier with high beam quality and a slope efficiency of 81.8%, using a fiber-Bragg-grating-stabilized laser diode as a narrow spectral linewidth (0.08 nm) seed source. During amplification, the spectral linewidth of the laser output is broadened from 0.08 to 0.24 nm due to nonlinear phenomena. To the best of our knowledge, we report the first experimental observation of the suppression of stimulated Brillouin scattering (SBS), with increased output power. In addition, we investigated the SBS suppression by simultaneously measuring the optical backscattered power, backscattered spectrum, and output spectrum at different values of output power. The beam quality, M-2, was measured to be similar to 1.28 at the maximum output power of 2.05 kW, and modal instability was not observed. (C) 2019 Optical Society of America

引用

页码：6251 / 6256

页数：6

共 62 条

[1]

Agrawal G., 2010, Nonlinear Fiber Optics, Vfourth

[2]

[Anonymous], 2018, P SPIE

[3] Single mode 4.3 kW output power from a diode-pumped Yb-doped fiber amplifier [J].

Beier, F. ;

Hupel, C. ;

Kuhn, S. ;

Hein, S. ;

Nold, J. ;

Proske, F. ;

Sattler, B. ;

Liem, A. ;

Jauregui, C. ;

Limpert, J. ;

Haarlammert, N. ;

Schreiber, T. ;

Eberhardt, R. ;

Tuennermann, A. .

OPTICS EXPRESS, 2017, 25 (13) :14892-14899

[4] Narrow linewidth, single mode 3 kW average power from a directly diode pumped ytterbium-doped low NA fiber amplifier [J].

Beier, F. ;

Hupel, C. ;

Nold, J. ;

Kuhn, S. ;

Hein, S. ;

Ihring, J. ;

Sattler, B. ;

Haarlammert, N. ;

Schreiber, T. ;

Eberhardt, R. ;

Tuennermann, A. .

OPTICS EXPRESS, 2016, 24 (06) :6011-6020

[5] Experimental investigations on the TMI thresholds of low-NA Yb-doped single-mode fibers [J].

Beier, Franz ;

Moeller, Friedrich ;

Sattler, Bettina ;

Nold, Johannes ;

Liem, Andreas ;

Hupel, Christian ;

Kuhn, Stefan ;

Hein, Sigrun ;

Haarlammert, Nicoletta ;

Schreiber, Thomas ;

Eberhardt, Ramona ;

Tuennermann, Andreas .

OPTICS LETTERS, 2018, 43 (06) :1291-1294

[6] Threshold power and fiber degradation induced modal instabilities in high power fiber amplifiers based on large mode area fibers [J].

Brar, Khush ;

Savage-Leuchs, Matthias ;

Henrie, Jason ;

Courtney, Sean ;

Dilley, Christian ;

Afzal, Robert ;

Honea, Eric .

FIBER LASERS XI: TECHNOLOGY, SYSTEMS, AND APPLICATIONS, 2014, 8961

[7]

Chu Q., 2018, CLEO PAC RIM C 2018

[8] A theoretical treatment of two approaches to SBS mitigation with two-tone amplification [J].

Dajani, Iyad ;

Zeringue, Clint ;

Bronder, T. Justin ;

Shay, Thomas ;

Gavrielides, Athanasios ;

Robin, Craig .

OPTICS EXPRESS, 2008, 16 (18) :14233-14247

[9] Multi-kilowatt power scaling and coherent beam combining of narrow-linewidth fiber lasers [J].

Dajani, Iyad ;

Flores, Angel ;

Holten, Roger ;

Anderson, Brian ;

Pulford, Benjamin ;

Ehrenreich, Thomas .

FIBER LASERS XIII: TECHNOLOGY, SYSTEMS, AND APPLICATIONS, 2016, 9728

[10] Investigation of Nonlinear Effects in Multitone-Driven Narrow-Linewidth High-Power Amplifiers [J].

Dajani, Iyad ;

Zeringue, Clint ;

Shay, Thomas M. .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 2009, 15 (02) :406-414

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