Nearly Diffraction Limited Tapered Lasers at 675 nm with 1 W Output Power and Conversion Efficiencies above 30%
B. Sumpf, P. Adamiec, M. Zorn, H. Wenzel, G. Erbert
Published in:
IEEE Photonics Technol. Lett., vol. 23, no. 4, pp. 266-268 (2011).
Abstract:
High brightness, highly efficient tapered lasers emitting around 675 nm have been developed. The devices have a 500 µm long straight section and a 1500 µm long tapered section with a flare angle of 3°. At a temperature of 25°C and a current of 1.5 A, the lasers emit an output power of nearly 1.2 W. The maximum conversion efficiency of 31% is reached at an output power of 1 W. The emitted beam is nearly diffraction limited with a beam propagation ratio (2nd moments) of 2.2.
Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
Index Terms:
high-brightness tapered lasers, optical beams, semiconductor lasers, diode lasers, red lasers.
© Copyright 2011 IEEE - All Rights Reserved. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Full version in pdf-format.