4.62 kW excellent beam quality laser output with a low-loss Yb/Ce co-doped fiber fabricated by chelate gas phase deposition technique

A high-power Yb/Ce co-doped double-clad fiber with low optical loss was successfully fabricated by an optimized chelate gas phase deposition technique. It exhibits a nearly homogenous distribution of Al, Ce and Yb ions in the fiber core region, which reduce the clustering. The core attenuation at 1080 nm and 1383 nm are 12 dB/km and 46 dB/km, respectively, indicating high optical performance with a low optical loss. The amplifier stage with this fiber delivers 4.62 kW excellent beam quality (M2 = 1.67) laser output with a slope efficiency of 80.3%. The experimental results show that the chelate gas phase deposition technique is a prospective method to fabricate a Yb/Ce co-doped fiber with low optical loss, which is beneficial for acquiring multi-kilowatt continuous-wave fiber laser with excellent beam quality.

[1]  D. Åberg,et al.  Strong UV absorption and visible luminescence in ytterbium-doped aluminosilicate glass under UV excitation. , 2007, Optics letters.

[2]  T. A. King,et al.  Efficient high power Yb3+-silica fibre laser cladding-pumped at 1064 nm , 2003 .

[3]  M. Melkumov,et al.  Effect of ytterbium co-doping on erbium clustering in silica-doped glass , 2015 .

[4]  J. J. Montiel i Ponsoda,et al.  Ytterbium-doped fibers fabricated with atomic layer deposition method. , 2012, Optics express.

[5]  Francesco Prudenzano,et al.  Design and refinement of rare earth doped multicore fiber lasers , 2013 .

[6]  Jens Kobelke,et al.  A highly efficient Yb-doped silica laser fiber prepared by gas phase doping technology , 2014 .

[7]  A. V. Kir'yanov,et al.  Yb$_{2}$ O$_{3}$ Doped Yttrium-Alumino-Silicate Nano-Particles Based LMA Optical Fibers for High-Power Fiber Lasers , 2012, Journal of Lightwave Technology.

[8]  John Haub,et al.  Metal clad active fibres for power scaling and thermal management at kW power levels. , 2016, Optics express.

[9]  Cesar Jauregui,et al.  Optimizing high-power Yb-doped fiber amplifier systems in the presence of transverse mode instabilities. , 2016, Optics express.

[10]  Francesco Prudenzano,et al.  Thermal effects on double clad octagonal Yb:glass fiber laser , 2009 .

[11]  M. Pal,et al.  Yb-Doped Pedestal Silica Fiber Through Vapor Phase Doping for Pulsed Laser Applications , 2016, IEEE Photonics Technology Letters.

[12]  Yong Wang,et al.  Thermal effects in kilowatt fiber lasers , 2004 .

[13]  M. Pal,et al.  An Optimized Vapor Phase Doping Process to Fabricate Large Core Yb-Doped Fibers , 2015, Journal of Lightwave Technology.

[14]  D. Payne,et al.  Fabrication of low-loss optical fibres containing rare-earth ions , 1985 .

[15]  Stephan Grimm,et al.  Highly efficient Yb-doped silica fibers prepared by powder sinter technology. , 2011, Optics letters.

[16]  Andrew S. Webb,et al.  MCVD in-situ solution doping process for the fabrication of complex design large core rare-earth doped fibers , 2010 .

[17]  Yong Wang,et al.  Analysis of Raman and thermal effects in kilowatt fiber lasers , 2004 .

[18]  David C. Brown,et al.  Thermal, stress, and thermo-optic effects in high average power double-clad silica fiber lasers , 2001 .

[19]  K. Golant,et al.  Influence of fusing on the uniformity of the distribution of Yb 3+ ions and the formation of clusters in silica with phosphorus admixture synthesized by SPCVD , 2015 .

[20]  Bing He,et al.  Thermal effects in kilowatt all-fiber MOPA. , 2011, Optics express.

[21]  Majid Lafouti,et al.  Robust cladding light stripper for high-power fiber lasers using soft metals. , 2014, Applied optics.

[22]  Y. Jeong,et al.  Ytterbium-doped large-core fiber laser with 1.36 kW continuous-wave output power. , 2004, Optics express.

[23]  H. Vezin,et al.  Clusters dissolution of Yb3+ in codoped SiO2-Al2O3-P2O5 glass fiber and its relevance to photodarkening. , 2012, The Journal of chemical physics.

[24]  David N. Payne,et al.  Optical fibre diameter variations and their effect on backscatter loss measurements , 1981 .

[25]  Rong Luo,et al.  Effects of fluorine on the properties of Yb/Ce co-doped aluminosilicate preforms prepared by MCVD with organic chelate precursor doping technique , 2016 .

[26]  Wei Zhao,et al.  Ytterbium-doped double-cladding fiber with 3.5 kW output power, fabricated by chelate gas phase deposition technique , 2016 .

[27]  Wei Zhao,et al.  KW-level low photodarkening Yb/Ce codoped aluminosilicate fiber fabricated by the chelate gas phase deposition technique , 2016 .

[28]  Volker Krause,et al.  Multi-kW single fiber laser based on an extra large mode area fiber design , 2012, Other Conferences.

[29]  D. C. Brown,et al.  Thermodynamic Analysis of End-Pumped Fiber Lasers Subjected to Surface Cooling , 2013, IEEE Journal of Quantum Electronics.

[30]  Jianqiu Cao,et al.  Method for stripping cladding light in the High power fiber laser , 2013 .

[31]  K. Golant,et al.  Clustering of Yb in silica-based glasses synthesized by SPCVD , 2016 .

[32]  Pu Zhou,et al.  3.15 kW direct diode-pumped near diffraction-limited all-fiber-integrated fiber laser. , 2015, Applied optics.

[33]  David J. Richardson,et al.  High power fiber lasers: current status and future perspectives [Invited] , 2010 .

[34]  A. Pal,et al.  High power laser fiber fabricated through vapor phase doping of Ytterbium , 2014 .

[35]  R. Beach,et al.  Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power. , 2008, Optics express.

[36]  Juan Wu,et al.  An improved method for stripping cladding light in high power fiber lasers , 2015, International Symposium on High Power Laser Systems and Applications.

[37]  K. Hejaz,et al.  A Novel Method for Stripping Cladding Lights in High Power Fiber Lasers and Amplifiers , 2012, Journal of Lightwave Technology.