7 March 2014 Breaking the symmetry for enhanced higher-order mode delocalization
Author Affiliations +
Large-pitch fibers (LPFs) have enabled the current records for average power, pulse energy and pulse peak power in ultra-fast fiber laser systems. In this paper the working principle of LPFs, which is based on higher-order mode delocalization, is numerically analyzed paying special attention to thermal effects and index mismatch. An enhanced design concept is proposed with a reduced symmetry to improve the delocalization of higher-order modes. This enhanced design has been obtained by transferring the most important characteristics of spiral geometries to a common hexagonal lattice.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fabian Stutzki, Florian Jansen, Cesar Jauregui, Jens Limpert, Andreas Tünnermann, "Breaking the symmetry for enhanced higher-order mode delocalization", Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 89611N (7 March 2014); doi: 10.1117/12.2036901; https://doi.org/10.1117/12.2036901

Back to Top