1. Design of an amplifier model accounting for thermal effect in fully aperiodic large pitch fibers
- Author
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Marie-Alicia Malleville, Philippe Roy, Dia Darwich, Federica Poli, Stefano Selleri, Baptiste Leconte, Raphaël Jamier, K. Tragni, Carlo Molardi, R. du Jeu, Romain Dauliat, Annamaria Cucinotta, Information Engineering Department, University of Parma, Parma, Italy, University of Parma = Università degli studi di Parma [Parme, Italie], Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] ,Materials science ,business.industry ,Amplifier ,Physics::Optics ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,010309 optics ,Aperiodic graph ,Fiber laser ,0103 physical sciences ,Optoelectronics ,Fiber ,Laser power scaling ,Resilience (materials science) ,Laser beam quality ,0210 nano-technology ,business ,ComputingMilieux_MISCELLANEOUS ,Photonic-crystal fiber - Abstract
Yb-doped Photonic Crystal Fibers (PCFs) have triggered a significant power scaling into fiber-based lasers. However thermally-induced effects, like mode instability, can compromise the output beam quality. PCF design with improved Higher Order Mode (HOM) delocalization and effective thermal resilience can contain the problem. In particular, Fully- Aperiodic Large-Pitch Fibers (FA-LPFs) have shown interesting properties in terms of resilience to thermal effects. In this paper the performances of a Yb-doped FA-LPF amplifier are experimentally and numerically investigated. Modal properties and gain competition between Fundamental Mode (FM) and first HOM have been calculated, in presence of thermal effects. The main doped fiber characteristics have been derived by comparison between experimental and numerical results.
- Published
- 2018
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