Abstract

We demonstrate the control of the spatiotemporal emission dynamics of a broad-area semiconductor laser in an external optical feedback configuration formed by a spatially filtering mirror. The emission properties are studied with a single-shot streak camera with temporal resolution of 7 ps and spatial resolution of 5 µm. Our results show a significant reduction of the spatial filamentation and, furthermore, suppression of the spatiotemporal instabilities, which are both intrinsic emission properties of standard high-power broad-area lasers. Associated with the control of the emission dynamics, strong improvement of the beam quality, which is essential for numerous high-power applications, is possible.

© 2003 Optical Society of America

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References

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    [CrossRef]

Other

G. H. B. Thompson, Opto-electronics 4, 257 (1972).
[CrossRef]

R. J. Lang, A. G. Larsson, and J. G. Cody, IEEE J. Quantum Electron. 27, 312 (1991).
[CrossRef]

N. Yu, R. K. DeFreez, D. J. Bossert, R. A. Elliott, H. G. Winful, and D. F. Welch, Electron. Lett. 24, 1203 (1988).
[CrossRef]

H. Adachihara, O. Hess, E. Abraham, P. Ru, and J. V. Moloney, J. Opt. Soc. Am. 10, 658 (1993).

O. Hess, S. W. Koch, and J. V. Moloney, IEEE J. Quantum Electron. 31, 35 (1995).
[CrossRef]

I. Fischer, O. Hess, W. Elsässer, and E. Göbel, Europhys. Lett. 35, 579 (1996).
[CrossRef]

T. Burkhard, M. O. Ziegler, I. Fischer, W. Elsässer, Chaos Solitons Fractals 10, 845 (1999).
[CrossRef]

J. V. Moloney, J. Opt. B Semiclass. Opt. 1, 183 (1999).
[CrossRef]

J. R. Marciante and G. P. Agrawal, IEEE J. Quantum Electron. 32, 590 (1996).
[CrossRef]

B. Chann, I. Nelson, and T. G. Walker, Opt. Lett. 25, 1352 (2000).
[CrossRef]

W. Nagengast and K. Rith, Opt. Lett. 22, 1250 (1997).
[CrossRef] [PubMed]

L. Goldberg and M. K. Chun, Appl. Phys. Lett. 53, 1900 (1988).
[CrossRef]

V. Raab and R. Menzel, Opt. Lett. 27, 167 (2002).
[CrossRef]

Chr. Simmendinger, D. Preisser, and O. Hess, Opt. Express 5, 48 (1999), http://www.opticsexpress.org.
[CrossRef] [PubMed]

M. E. Bleich, D. Hochheiser, J. V. Moloney, and J. E. S. Socolar, Phys. Rev. E 55, 2119 (1997).
[CrossRef]

R. Hochheiser, J. V. Moloney, and J. Lega, Phys. Rev. A 55, R4011 (1997).
[CrossRef]

S. Wolff H. Fouckhardt, Opt. Express 7, 222 (2000), http://www.opticsexpress.org.
[CrossRef] [PubMed]

O. Hess, Proc. SPIE 2399, 182 (1995).
[CrossRef]

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Figures (4)

Fig. 1
Fig. 1

Spatiotemporal emission dynamics of the near field of the solitary laser at Ipump=1.75Ithr: (a) Turn-on behavior in a 4.4-ns-long time window, (b) behavior 8 ns after turn-on in a 1.8-ns-long time window, and (c) behavior in a 600-ps-long time window.

Fig. 2
Fig. 2

Experimental setup of the external resonator configuration. Side view, active layer plane; top view, injection contact schematically indicated by the gray-shaded area.

Fig. 3
Fig. 3

Intensity profiles across the active layer of the BAL under feedback at Ipump=0.98Ithr. The angle of incidence on the mirror decreases from left to right.

Fig. 4
Fig. 4

Emission dynamics of the BAL subjected to spatially filtered optical feedback in 4.4-ns-long time windows. (a) Ipump=1.75Ithr and (b) Ipump=3Ithr. Bottom row, turn-on behavior; top row, 8 ns after turn-on.

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