Abstract

Amplification in a single-clad, large-mode-area erbium fiber as an alternative to double-clad Er-Yb amplifiers is presented. Both signal and pump are coupled through a mode-matched splice into the fundamental mode, which ensures preferential gain in the fundamental mode while minimizing the amplified spontaneous emission (ASE). The 875μm2 effective area of the Er fiber enables amplification of 6ps pulses at 1.55μm wavelength by 33dB in a single stage to >25kW peak power with low nonlinear pulse distortion and a diffraction-limited output beam with M2<1.1.

© 2007 Optical Society of America

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2006

P. Polynkin, A. Polynkin, D. Panasenko, N. Peyghambarian, and J. V. Moloney, Bull. Pol. Acad. Sci.: Biol. Sci. 18, 2194 (2006).

J. M. Fini, Opt. Express 14, 69 (2006).
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L. Dong, J. Li, and X. Peng, Opt. Express 14, 11512 (2006).
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2005

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A. Galvanauskas, IEEE J. Sel. Top. Quantum Electron. 7, 504 (2001).
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1991

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[CrossRef]

I. N. Duling, Electron. Lett. 27, 544 (1991).
[CrossRef]

Broderick, N. G.

Broeng, J.

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I. N. Duling, Electron. Lett. 27, 544 (1991).
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Emori, Y.

Y. Emori, K. Tanaka, C. Headley, and A. Fujisaki, in Conference on Lasers and Electro-Optics 2007 Technical Digest (Optical Society of America, 2007), paper CFI2.

Fermann, M. E.

Fini, J. M.

Folkenberg, J. R.

Fujisaki, A.

Y. Emori, K. Tanaka, C. Headley, and A. Fujisaki, in Conference on Lasers and Electro-Optics 2007 Technical Digest (Optical Society of America, 2007), paper CFI2.

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A. Galvanauskas, IEEE J. Sel. Top. Quantum Electron. 7, 504 (2001).
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Goldberg, L.

Hanna, D. C.

Headley, C.

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Jakobsen, C.

Kliner, D. A. V.

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Laming, R. I.

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Liem, A.

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Moloney, J. V.

P. Polynkin, A. Polynkin, D. Panasenko, N. Peyghambarian, and J. V. Moloney, Bull. Pol. Acad. Sci.: Biol. Sci. 18, 2194 (2006).

Musha, M.

Nakagawa, K.

Nilsson, J.

Nolte, S.

Offerhaus, H. L.

Ota, J.

Panasenko, D.

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Penty, R. V.

Petersson, A.

Peyghambarian, N.

P. Polynkin, A. Polynkin, D. Panasenko, N. Peyghambarian, and J. V. Moloney, Bull. Pol. Acad. Sci.: Biol. Sci. 18, 2194 (2006).

Phillips, M.

D. J. Richardson, R. I. Laming, D. N. Payne, V. Matsas, and M. Phillips, Electron. Lett. 27, 542 (1991).
[CrossRef]

Polynkin, A.

P. Polynkin, A. Polynkin, D. Panasenko, N. Peyghambarian, and J. V. Moloney, Bull. Pol. Acad. Sci.: Biol. Sci. 18, 2194 (2006).

Polynkin, P.

P. Polynkin, A. Polynkin, D. Panasenko, N. Peyghambarian, and J. V. Moloney, Bull. Pol. Acad. Sci.: Biol. Sci. 18, 2194 (2006).

Reich, M.

Richardson, D. J.

Sammut, R.

Schreiber, T.

Shirakawa, A.

Tanaka, K.

Y. Emori, K. Tanaka, C. Headley, and A. Fujisaki, in Conference on Lasers and Electro-Optics 2007 Technical Digest (Optical Society of America, 2007), paper CFI2.

Taverner, D.

Tunnermann, A.

Ueda, K.

Williams, K.

Zellmer, H.

Bull. Pol. Acad. Sci.: Biol. Sci.

P. Polynkin, A. Polynkin, D. Panasenko, N. Peyghambarian, and J. V. Moloney, Bull. Pol. Acad. Sci.: Biol. Sci. 18, 2194 (2006).

Electron. Lett.

D. J. Richardson, R. I. Laming, D. N. Payne, V. Matsas, and M. Phillips, Electron. Lett. 27, 542 (1991).
[CrossRef]

I. N. Duling, Electron. Lett. 27, 544 (1991).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron.

A. Galvanauskas, IEEE J. Sel. Top. Quantum Electron. 7, 504 (2001).
[CrossRef]

Opt. Express

Opt. Lett.

Other

C. Headley, in Raman Amplification in Fiber Optical Communication Systems, C.Headley and G.Agrawal, eds. (Elsevier, 2006), pp. 303-374.

Y. Emori, K. Tanaka, C. Headley, and A. Fujisaki, in Conference on Lasers and Electro-Optics 2007 Technical Digest (Optical Society of America, 2007), paper CFI2.

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Figures (3)

Fig. 1
Fig. 1

(a) Schematic of the laser oscillator–amplifier system. (b) Oscillator spectrum ( 0.05 nm resolution). (c) Measured normalized fiber index and calculated fundamental mode intensity profile. (d) M 2 and mode profile measured at low levels of amplification.

Fig. 2
Fig. 2

(a) Amplifier average power and pulse energy with Er gain lengths of L 1 = 5.75 m (circles) and L 2 = 4.0 m (squares) as a function of 1480 nm pump power. (b) Spectra at the maximum power for L 1 and L 2 .

Fig. 3
Fig. 3

(a) Spectra with gain lengths L 1 = 5.75 m (dashed curve, maximum power) and L 2 = 4 m (solid curve, at maximum power; crosses, minimum power). (b) Intensity autocorrelation of pulses from the oscillator (crosses) and amplifier at maximum amplification for a gain length of 5.75 m (circles) and the fit (solid curve) to the traces assuming a 6.3 ps sech pulse.

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