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Optics Letters

Optics Letters


  • Vol. 28, Iss. 13 — Jul. 1, 2003
  • pp: 1135–1137

Control of the spatiotemporal emission of a broad-area semiconductor laser by spatially filtered feedback

Shyam K. Mandre, Ingo Fischer, and Wolfgang Elssser  »View Author Affiliations

Optics Letters, Vol. 28, Issue 13, pp. 1135-1137 (2003)

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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

OCIS Codes
(140.3300) Lasers and laser optics : Laser beam shaping
(140.5960) Lasers and laser optics : Semiconductor lasers
(190.3100) Nonlinear optics : Instabilities and chaos
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in

Shyam K. Mandre, Ingo Fischer, and Wolfgang Elssser, "Control of the spatiotemporal emission of a broad-area semiconductor laser by spatially filtered feedback," Opt. Lett. 28, 1135-1137 (2003)

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