Abstract

A side-pump coupler with a refractive index valley was investigated theoretically and experimentally. The high pump coupling efficiency and the suppression of backward light propagation due to the refractive index valley are illustrated. Based on the analysis, the $(2+1) \times 1$ pump and signal coupler with both pump coupling efficiency and signal transfer efficiency of $> 96\%$ and the BR of 2.82 was implemented, which accompanied with the maximum pump power of 398 W. And based on these couplers, an all-fiber bi-directionally pumping MOPA laser with an output power of 256 W and optical-optical efficiency of 80.5% was achieved in the experiment.

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2012 (3)

T. Theeg, H. Sayinc, J. Neumann, L. Overmeyer, D. Kracht, "Pump and signal combiner for bi-directional pumping of all-fiber lasers and amplifiers," Opt. Express 20, 28125-28141 (2012).

T. Theeg, H. Sayinc, J. Neumann, D. Kracht, "All-fiber counter-propagation pumped single frequency amplifier stage with 300-W output power," IEEE Photon. Technol. Lett. 24, 1864-1867 (2012).

Q. Xiao, H. Zhang, P. Yan, Y. Wang, J. Hao, M. Gong, " $100~\mu{\rm m}$ core diameter monolithic fiber side-pumping coupler for 10 mJ 10 ns all-fiber laser," Laser Phys. 22, 1729-1733 (2012).

2011 (5)

Q. Xiao, P. Yan, S. Yin, J. Hao, M. Gong, "100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration," Laser Physics Lett. 8, 125-129 (2011).

Nilsson, D. N. Payne, "High-power fiber lasers," Sci. 332, 921-922 (2011).

B. Samson, A. Carter, K. Tankala, "Doped fibres: Rare-earth fibres power up," Nature Photonics 5, 466-467 (2011).

Y. Fan, B. He, J. Zhou, J. Zheng, H. Liu, Y. Wei, J. Dong, Q. Lou, "Thermal effects in kilowatt all-fiber MOPA," Opt. Express 19, 15162-15172 (2011).

P. Yan, S. Yin, J. He, C. Fu, Y. Wang, M. Gong, "1.1 kW ytterbium monolithic fiber laser with assembled end-pump scheme to couple high brightness single emitters," Photon. Technol. Lett. 23, 697-699 (2011).

2010 (3)

D. Richardson, J. Nilsson, W. Clarkson, "High power fiber lasers: current status and future perspectives," J. Opt. Soc. Am. B 27, B63-B92 (2010).

C. Jauregui, S. Böhme, G. Wenetiadis, J. Limpert, A. Tünnermann, "Side-pump combiner for all-fiber monolithic fiber lasers and amplifiers," J. Opt. Soc. Am. B 27, 1011-1015 (2010).

F. Gonthier, "Novel designs for pump and signal fiber combiners," Proc. SPIE 7580, 758019-758019 (2010).

2009 (1)

B. Sévigny, P. Poirier, M. Faucher, "Pump combiner loss as a function of input numerical aperture power distance," Proc. SPIE 7195, 719523-719523 (2009).

2008 (1)

2007 (1)

Y. Sintov, Y. Glick, T. Koplowitch, O. Katz, Y. Nafcha, Y. Shamir, R. Lavi, "A novel side coupling tech-nique for rugged all-fiber lasers and amplifiers," Proc. SPIE 6552, 65520R-65520R (2007).

2006 (1)

2004 (1)

P. Polynkin, V. Temyanko, M. Mansuripur, N. Peyghambarian, "Efficient and scalable side pumping scheme for short high-power optical fiber lasers and amplifiers," Photon. Technol. Lett. 16, 2024-2026 (2004).

1996 (1)

T. Weber, W. Lüthy, H. P. Weber, "Side-pumped fiber laser," Appl. Phys. B: Lasers and Opt. 63, 131-134 (1996).

1995 (1)

D. J. Ripin, L. Goldberg, "High efficiency side-coupling of light into optical fibres using imbedded v-grooves," Electron. Lett. 31, 2204-2205 (1995).

Appl. Phys. B: Lasers and Opt. (1)

T. Weber, W. Lüthy, H. P. Weber, "Side-pumped fiber laser," Appl. Phys. B: Lasers and Opt. 63, 131-134 (1996).

Electron. Lett. (1)

D. J. Ripin, L. Goldberg, "High efficiency side-coupling of light into optical fibres using imbedded v-grooves," Electron. Lett. 31, 2204-2205 (1995).

IEEE Photon. Technol. Lett. (1)

T. Theeg, H. Sayinc, J. Neumann, D. Kracht, "All-fiber counter-propagation pumped single frequency amplifier stage with 300-W output power," IEEE Photon. Technol. Lett. 24, 1864-1867 (2012).

J. Opt. Soc. Am. B (1)

C. Jauregui, S. Böhme, G. Wenetiadis, J. Limpert, A. Tünnermann, "Side-pump combiner for all-fiber monolithic fiber lasers and amplifiers," J. Opt. Soc. Am. B 27, 1011-1015 (2010).

J. Opt. Soc. Am. B (1)

D. Richardson, J. Nilsson, W. Clarkson, "High power fiber lasers: current status and future perspectives," J. Opt. Soc. Am. B 27, B63-B92 (2010).

Laser Phys. (1)

Q. Xiao, H. Zhang, P. Yan, Y. Wang, J. Hao, M. Gong, " $100~\mu{\rm m}$ core diameter monolithic fiber side-pumping coupler for 10 mJ 10 ns all-fiber laser," Laser Phys. 22, 1729-1733 (2012).

Laser Physics Lett. (1)

Q. Xiao, P. Yan, S. Yin, J. Hao, M. Gong, "100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration," Laser Physics Lett. 8, 125-129 (2011).

Nature Photonics (1)

B. Samson, A. Carter, K. Tankala, "Doped fibres: Rare-earth fibres power up," Nature Photonics 5, 466-467 (2011).

Opt. Express (3)

Opt. Lett. (1)

Photon. Technol. Lett. (2)

P. Yan, S. Yin, J. He, C. Fu, Y. Wang, M. Gong, "1.1 kW ytterbium monolithic fiber laser with assembled end-pump scheme to couple high brightness single emitters," Photon. Technol. Lett. 23, 697-699 (2011).

P. Polynkin, V. Temyanko, M. Mansuripur, N. Peyghambarian, "Efficient and scalable side pumping scheme for short high-power optical fiber lasers and amplifiers," Photon. Technol. Lett. 16, 2024-2026 (2004).

Proc. SPIE (1)

B. Sévigny, P. Poirier, M. Faucher, "Pump combiner loss as a function of input numerical aperture power distance," Proc. SPIE 7195, 719523-719523 (2009).

Proc. SPIE (2)

Y. Sintov, Y. Glick, T. Koplowitch, O. Katz, Y. Nafcha, Y. Shamir, R. Lavi, "A novel side coupling tech-nique for rugged all-fiber lasers and amplifiers," Proc. SPIE 6552, 65520R-65520R (2007).

F. Gonthier, "Novel designs for pump and signal fiber combiners," Proc. SPIE 7580, 758019-758019 (2010).

Sci. (1)

Nilsson, D. N. Payne, "High-power fiber lasers," Sci. 332, 921-922 (2011).

Other (8)

V. P. Gapontsev, I. Samartsev, Coupling Arrangement Between a Multi-Mode Light Source and an Optical Fiber Through an Intermediate Optical Fiber Length U.S. 5999673 (1999).

Y. Glick, Y. Sintov, T. Koplowitch, Y. Nafcha, "Strictly-all-fiber 1070 nm high power source in a distributed side-coupled pump configuration," Conf. Lasers and Electro-Optics/Quantum Electron. Laser Sci. Conf. and Photon. Applicat. Syst. Technol. (2007).

F. Gonthier, M. Garneau, N. Vachon, Multimode Fiber Outer Cladding Coupler for Multi-Clad Fibers US Patent 7933779 B2 (2011).

A. B. Grudinin, D. N. Payne, P. W. Turner, L. J. A. Nilsson, M. N. Zervas, M. Ibsen, M. K. Durkin, Multi-Fiber Arrangements for High-Power Fiber Lasers and Amplifiers U.S. 6826335 (2004).

C. Huang, D. Huang, C. Chang, D. Jheng, K. Hsu, C. Kuan, S. Huang, "Demonstration of side coupling between high power laser diode array and double-clad fiber using sub-wavelength grating," CLEO:2011—Laser Applicat. to Photonic Applicat., OSA Tech. Dig. (CD) (Optical Soc. of Amer., 2011), Paper JWA41 .

S. W. Moore, J. P. Koplow, A. Hansen, G. Wien, D. A. Kliner, "Embedded-mirror side pumping of double-clad fiber lasers and amplifiers," Conf. on Lasers and Electro-Optics/Quantum Electronics and Laser Sci. Conf. and Photonic Applicat. Syst. Technologies, OSA Tech. Dig. (CD) (Optical Soc. of Amer., 2008), Paper CThL2. .

http://www.itflabs.com..

N. S. Platonov, D. V. Gapontsev, V. P. Gapontsev, V. Shumilin, "135 W CW fiber laser with perfect single mode output," Proc. Conf. on Lasers and Electro-Optics 2002 Postdeadline Paper CPDC3 (2002).

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