J. Fricke, H. Wenzel, F. Bugge, O.P. Brox, A. Ginolas, W. John, P. Ressel, L. Weixelbaum, G. Erbert

Published in:

IEEE Photonics Technol. Lett., vol. 24 , no. 16, pp. 1443-1445 (2012).

Abstract:

We present the results for high-power broad-area distributed feedback lasers with surface gratings of 80th, 135th, and 270th Bragg orders. A maximum output power of 11 W for a laser with 80th order grating, emitting around 976 nm with a spectral width <1 nm has been achieved. Similar narrow linewidth operation occurs for devices with 135th Bragg order from 7- to 11-W output power. The technological approach to fabricating these devices based on stepper lithography and reactive ion etching is described.

Index Terms:

Bragg grating, high power, laser fabrication, semiconductor laser, wavelength stabilization.

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