Abstract

We model and characterize the behavior of a Q-switched fiber laser. The fiber is a doped multicore photonic crystal fiber having six cores in a ring-type geometry. The fiber laser is Q-switched using an intracavity acousto-optic modulator. Using a mode filtering technique in the far field, a mode very close to the fundamental in-phase supermode is obtained with a mode field area of 4200μm2 and a divergence of 9mrad. Pulses with energies of up to 2.2mJ and durations of 26ns (limited by end facet damage) at a repetition rate of 10kHz are obtained.

© 2008 Optical Society of America

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References

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J. Limpert, O. Schmidt, J. Rothhardt, F. Röser, T. Schreiber, and A. Tünnermann, Opt. Express 14, 2715 (2006).
[CrossRef] [PubMed]

L. Michaille, C. R. Bennett, D. M. Taylor, and T. J. Shepherd, Proc. SPIE 6102, 61020W (2006).
[CrossRef]

B. G. Ward, Proc. SPIE 6102, 61021D (2006).
[CrossRef]

2005 (4)

F. Di Teodoro and C. D. Brooks, Opt. Lett. 30, 2694 (2005).
[CrossRef] [PubMed]

J. Limpert, N. Deguil-Robin, I. Manek-Hönninger, F. Salin, J. Roes, A. Liem, T. Schreiber, S. Nolte, H. Zellmer, A. Tünnermann, J. Broeng, A. Petersson, and C. Jacobsen, Opt. Express 13, 1055 (2005).
[CrossRef] [PubMed]

J. Limpert, N. Seguil-Robin, S. Petit, I. Manek-Hönninger, F. Salin, P. Rigail, C. Hönninger, and E. Mottay, Appl. Phys. B 81, 19 (2005).
[CrossRef]

L. Michaille, C. R. Bennett, T. J. Shepherd, J. Broeng, H. R. Simonsen, and A. Petersson, Opt. Lett. 13, 1668 (2005).
[CrossRef]

2004 (3)

2003 (1)

2001 (1)

P. J. Roberts and T. J. Shepherd, J. Opt. A, Pure Appl. Opt. 3, S133 (2001).
[CrossRef]

2000 (1)

1999 (1)

A.-C. Tien, S. Backus, H. Kapteyn, M. Murnane, and G. Mourou, Phys. Rev. Lett. 82, 3883 (1999).
[CrossRef]

Appl. Opt. (1)

Appl. Phys. B (1)

J. Limpert, N. Seguil-Robin, S. Petit, I. Manek-Hönninger, F. Salin, P. Rigail, C. Hönninger, and E. Mottay, Appl. Phys. B 81, 19 (2005).
[CrossRef]

J. Opt. A, Pure Appl. Opt. (1)

P. J. Roberts and T. J. Shepherd, J. Opt. A, Pure Appl. Opt. 3, S133 (2001).
[CrossRef]

Opt. Express (5)

Opt. Lett. (3)

Phys. Rev. Lett. (1)

A.-C. Tien, S. Backus, H. Kapteyn, M. Murnane, and G. Mourou, Phys. Rev. Lett. 82, 3883 (1999).
[CrossRef]

Proc. SPIE (2)

L. Michaille, C. R. Bennett, D. M. Taylor, and T. J. Shepherd, Proc. SPIE 6102, 61020W (2006).
[CrossRef]

B. G. Ward, Proc. SPIE 6102, 61021D (2006).
[CrossRef]

Other (1)

A. E. Siegman, Lasers (Oxford U. Press, 1986).

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Figures (5)

Fig. 1
Fig. 1

Scanning electron microscope image of the end face of the 6-core PCF.

Fig. 2
Fig. 2

Calculated (a), (c) near field and (b), (d) far field of the in-phase supermode corresponding to (a), (b) the fundamental mode of each core and (c), (d) a higher-order mode of each core. The width of the near-field images is 160 μ m , and the width of the far-field images is 200 mrad .

Fig. 3
Fig. 3

Experimental arrangement. AOM, acousto-optic modulator.

Fig. 4
Fig. 4

Experimental far-field images for (a) fully open pinhole (no filtering) and (b) pinhole of about 1 mm diameter.

Fig. 5
Fig. 5

Experimental pulse shape measured with a fast detector: (a) pulse energy 0.2 mJ , pulse duration 150 ns ; (b) pulse energy 2 mJ , corresponding pulse duration 30 ns .

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