Abstract

A 100 W-class all-fiber linearly-polarized single-mode fiber laser at 1120 nm with an optical efficiency of 50% was demonstrated. The laser consists of a 4.2 m long Yb-doped polarization maintaining fiber with a core diameter of 10 μm and a pair of FBGs written in matched passive fiber. Linearly polarized output with a polarization extinction ratio of 15 dB is achieved by a cavity that selects both wavelength and polarization. Pulsed operations with square shaped pulses varying from 100 μs to 1 ms duration are achieved without relaxation oscillation.

© 2012 OSA

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2012

2011

2010

2009

2005

Alam, S. U.

Bjarklev, A.

Boyland, A. J.

Broeng, J.

Calia, D. B.

Chen, J.

Chen, M.

Codemard, C.

Codemard, C. A.

C. A. Codemard, J. Ji, J. K. Sahu, and J. Nilsson, “100 W CW cladding pumped Raman fiber laser at 1120 nm,” Proc. SPIE7508, 75801N, 75801N-7 (2010).
[CrossRef]

Dong, J.

Fan, X.

Fan, Y.

Feng, Y.

Gu, X.

Hansen, K. P.

He, B.

Hecht, J.

J. Hecht, “Photonic Frontiers: fiber lasers ramp up the power,” Laser Focus World45, 53–58 (2009).

Hu, J.

Huang, S.

Ibsen, M.

Ji, J.

C. A. Codemard, J. Ji, J. K. Sahu, and J. Nilsson, “100 W CW cladding pumped Raman fiber laser at 1120 nm,” Proc. SPIE7508, 75801N, 75801N-7 (2010).
[CrossRef]

Kalita, M. P.

Liu, H.

Lou, Q.

Lyngsø, J. K.

Nilsson, J.

C. A. Codemard, J. Ji, J. K. Sahu, and J. Nilsson, “100 W CW cladding pumped Raman fiber laser at 1120 nm,” Proc. SPIE7508, 75801N, 75801N-7 (2010).
[CrossRef]

Olausson, C. B.

Qin, G.

Sahu, J. K.

Shirakawa, A.

Si, L.

Taylor, L. R.

Ueda, K.

Wang, J.

Wei, Y.

Yoo, S.

Zhang, L.

Zheng, J.

Zhou, J.

Appl. Opt.

Laser Focus World

J. Hecht, “Photonic Frontiers: fiber lasers ramp up the power,” Laser Focus World45, 53–58 (2009).

Opt. Express

Opt. Lett.

Proc. SPIE

C. A. Codemard, J. Ji, J. K. Sahu, and J. Nilsson, “100 W CW cladding pumped Raman fiber laser at 1120 nm,” Proc. SPIE7508, 75801N, 75801N-7 (2010).
[CrossRef]

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Figures (7)

Fig. 1
Fig. 1

Experimental configuration of the 1120 nm Yb-doped fiber laser

Fig. 2
Fig. 2

(a) Laser output spectra at different pump power. (b) A zoom-in view of laser emission spectrum at maximum output.

Fig. 3
Fig. 3

Output power versus input pump power at CW and pulsed (500 Hz) operation conditions.

Fig. 4
Fig. 4

Polarization extinction ratio as a function of output power

Fig. 5
Fig. 5

An example of the laser pulses with leading sharp spikes due to relaxation oscillation if the laser is pumped with a square wave.

Fig. 6
Fig. 6

Spikes-free macro pulse operation of the 1120 nm Yb fiber laser with different pulse durations.

Fig. 7
Fig. 7

(a) Core and surface temperature distributions along the gain fiber at a pump power of 200 W with h = 100 W/(m2·K) for the 1120 nm and 1070 nm laser, respectively. (b) Surface temperature at pump injection point versus convective heat transfer coefficient h.

Equations (1)

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T 0 = T c + q a 2 2hc + q a 2 4 k 1 + q a 2 2 k 2 ln( b a )+ q a 2 2 k 3 ln( c b )

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