Fiber designs for exceeding the bulk-media self-focusing threshold

Andrew D. Yablon; Jayesh Jasapara

doi:10.1117/12.701967

20 February 2007 Fiber designs for exceeding the bulk-media self-focusing threshold

Andrew D. Yablon, Jayesh Jasapara

Proceedings Volume 6453, Fiber Lasers IV: Technology, Systems, and Applications; 64531D (2007) https://doi.org/10.1117/12.701967
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

Abstract

We present numerical results suggesting that optical fibers with a strong central dip at the center of a strictly axisymmetric refractive index profile can guide stable fundamental modes at more than 10 times the bulk media critical power for self-focusing. The fibers are modeled using a numerical integration of the steadystate axisymmetric scalar paraxial non-linear Schrodinger (NLS) equation as well as by an axisymmetric scalar paraxial finite-difference beam-propagation-method (FD-BPM) code. Two different criteria demonstrated that the fundamental modes of these fiber designs are stable to radial disturbances above the bulk media critical power for self focusing. If these modes are also shown to be stable to azimuthal disturbances, they will significantly extend the performance of extremely high-peak-power (≫4MW) short-pulse (≪1 ns) optical fiber lasers and amplifiers.

Citation Download Citation

Andrew D. Yablon and Jayesh Jasapara "Fiber designs for exceeding the bulk-media self-focusing threshold", Proc. SPIE 6453, Fiber Lasers IV: Technology, Systems, and Applications, 64531D (20 February 2007); https://doi.org/10.1117/12.701967

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