Abstract

High-energy, high-power, quasi-continuous wave (QCW) operation of double-clad Yb fiber lasers incorporating an incoherent signal combiner is reported. We constructed four efficient, high-power Yb fiber lasers, each of which produced rectangular pulses at 1080 nm with a pulse energy greater than 15 J, and a pulse duration of 10 ms at a repetition rate of 10 Hz, corresponding to an average power of over 150 W and a peak power of over 1.5 kW for ~200 W of incident pump power at 915 nm. These laser outputs were combined by a homemade incoherent fiber signal combiner with low loss, yielding a maximum peak power of ~6.0 kW in a beam with M2 ≈ 12.5. The detailed laser characteristics and prospects for further power scaling in QCW operation are discussed.

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  11. Y. Shamir, Y. Sintov, and M. ShtaifIncoherent beam combining of multiple single-mode fiber lasers utilizing fused tapered bundlingProc. SPIE20107580
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  15. S. Murphy and G. LoringerQCW fiber lasers come of ageCanadian Industrial Machinery Feb.20164647

Other (15)

J. Nilsson and D. PayneHigh-power fiber lasersSci.2011332921922

C. Jauregui, J. Limpert, and A. TünnermannHigh-power fibre lasersNature Photon.20137861867

D. J. Richardson, J. Nilsson, and W. A. ClarksonHigh power fiber lasers: current status and future perspectivesJ. Opt. Soc. Am. B201027B63B92

M. N. Zervas and C. A. CodemardHigh power fiber lasers: a reviewInt. J. Mod. Phys. B2014281442009

H. Yu, H. Zhang, H. Lv, X. Wang, J. Leng, H. Xiao, S. Guo, P. Zhou, X. Xu, and J. Chen3.15kW direct diodepumped near diffraction-limited all-fiber-integrated fiber laserAppl. Opt.2015544556

Y. Jeong, A. J. B. J. K. Sahu, S. Chung, J. Nilsson, and D. N. PayneMulti-kilowatt single-mode ytterbium-doped large-core fiber laserJ. Opt. Soc. Korea200913416

V. Fomin, M. Abramov, A. Ferin, A. Abramov, D. Mochalov, N. Platonov, and V. Gapontsev10 kW single-mode fiber laserInternational Symposium on High-Power Fiber Lasers and Their ApplicationsJune 28-July 1, 2010St. Petersburg2010SyTu-1.3

E. Shcherbakov, V. Fomin, A. Abramov, A. Ferin, D. Mochalov, and V. P. GapontsevIndustrial grade 100kW power CW fiber laserAdvanced Solid State Lasers Congress, OSA Technical Digest2013ATh4A.2

S. J. Augst, T. Y. Fan, and A. SanchezCoherent beam combining and phase noise measurements of ytterbium fiber amplifiersOpt. Lett.200429474476

I. Divliansky, D. Ott, B. Anderson, D. Drachenberg, V. Rotar, G. Venus, and L. GlebovMultiplexed volume Bragg gratings for spectral beam combining of high power fiber lasersProc. SPIE20128237823705

Y. Shamir, Y. Sintov, and M. ShtaifIncoherent beam combining of multiple single-mode fiber lasers utilizing fused tapered bundlingProc. SPIE20107580

X. Zhou, Z. Chen, Z. Wang, J. Hou, and X. XuHigh power incoherent beam combining of fiber lasers based on a 7 × 1 all-fiber signal combinerOpt. Eng.201655056103

A. Braglia, A. C. Ano, M. Olivero, A. Penna, and G. PerroneAll-fiber kilowatt signal combiners for high power fiber lasersCLEO EUROPE/IQEC12-16 May, 2013Munich

T. WestphälingPulsed fiber lasers from ns to ms range and their applicationsPhys. Procedia. A20105125136

S. Murphy and G. LoringerQCW fiber lasers come of ageCanadian Industrial Machinery Feb.20164647

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