High Power Diode Lasers Optimized for Low Loss Smile-insensitive External Spectral Stabilization
IEEE Photonics Technol. Lett., vol. 24, no. 8, pp. 703-705 (2012).
© Copyright 2012 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.
High powers can be produced within narrow spectral widths by stabilizing diode lasers with external volume holographic gratings, but this typically introduces additional optical losses. We compare the influence of diode laser design on stabilization performance, comparing devices with super large optical waveguides (4.8ìm) and narrow vertical far fields to reference designs with thinner waveguides (1.6ìm). We find that the use of diode lasers with super larger optical waveguides substantially improves the stabilization performance, with lower losses and wider operation ranges sustained even in the presence of significant (>1ìm) bar smile.
1 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany
2 with the Chair for Laser Technology LLT, RWTH Aachen University, Aachen 52074, Germany
3 Fraunhofer-Institut für Lasertechnik ILT, Aachen 52074, Germany