The Influence of Differential Modal Gain on the Filamentary Behavior of Broad Area Diode Lasers
M. Winterfeldt, P. Crump, S. Knigge, A. Maaßdorf, G. Erbert and G. Tränkle
Published in:
IEEE Photonics Conference (IPC 2015), Reston, VA, USA, Oct. 4-8, pp. 567-568 (2015).
Abstract:
High power diode lasers with low modal gain (∼4 cm-1), predicted to operate with very low filamentation, are shown to operate with near-field modulation depth half that of reference devices (∼12 cm-1). However, beam quality is unaffected.
Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany
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