High-Power DBR-Tapered Laser at 980 nm for Single-Path Second Harmonic Generation

C. Fiebig, G. Blume, M. Uebernickel, D. Feise, C. Kaspari, K. Paschke, J. Fricke, H. Wenzel, and G. Erbert

Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany

Published in:
IEEE J. Sel. Top. Quantum Electron., vol. 15, no. 3, pp. 978-983 (2009).
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Abstract:
We present experimental results about edge-emitting distributed-Bragg-reflector-tapered diode lasers emitting at 980 nm. The investigated lasers show an output power of up to 12 W with a conversion efficiency of about 45%. The lasers also exhibit a small vertical divergence <15° full-width at half maximum (FWHM), a nearly diffraction-limited beam quality, and a narrow spectral linewidth with FWHM smaller than 12 pm. These properties allow efficient single-pass second harmonic generation with power levels of more than 1W at 488 nm.

Index Terms:
Distributed Bragg reflector (DBR), high power, second harmonic generation (SHG), tapered diode laser.

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