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Bifurcation scenario leading to multiple pulse emission in VECSELs
Author(s): Jan P. Hausen; S. Meinecke; K. Lüdge
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Paper Abstract

Depending on the operation conditions of mode-locked semiconductor lasers different dynamical regimes exist and are well understood. However, if the amplifying and the absorbing material are embedded in a V-shaped external cavity, new multi-pulse (pulse cluster) solutions emerge. We theoretically model such a device by a system of multi-delay differential equations and apply numeric integration as well as path-continuation methods to understand the underlying bifurcation scenarios. Our investigations indicate that by repositioning the gain-chip, the laser can be operated in different stable regions e.g. fundamental, higher harmonic or multi-pulse mode-locking. Furthermore, our bifurcation analysis shows how the multi-pulse solutions evoke from the fundamental mode-locking branch and that different operation regimes can be favored by introducing an asymmetry to the cavity.

Paper Details

Date Published: 4 March 2019
PDF: 7 pages
Proc. SPIE 10901, Vertical External Cavity Surface Emitting Lasers (VECSELs) IX, 109010F (4 March 2019); doi: 10.1117/12.2513751
Show Author Affiliations
Jan P. Hausen, Technische Univ. Berlin (Germany)
S. Meinecke, Technische Univ. Berlin (Germany)
K. Lüdge, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 10901:
Vertical External Cavity Surface Emitting Lasers (VECSELs) IX
Ursula Keller, Editor(s)

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