Simulation and experimental investigation of beam distortions in end-pumped laser rod amplifiers
| Autor: | Patrick Georges, Mondher Besbes, Xavier Délen, Philipp Albrodt, Fabien Lesparre |
|---|---|
| Přispěvatelé: | Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Fibercryst |
| Rok vydání: | 2018 |
| Předmět: |
[PHYS]Physics [physics]
Physics Computer simulation business.industry Amplifier Statistical and Nonlinear Physics 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Signal gain Atomic and Molecular Physics and Optics law.invention 010309 optics Optics law 0103 physical sciences Laser power scaling Laser beam quality Thermal lensing 0210 nano-technology business Beam (structure) |
| Zdroj: | Journal of the Optical Society of America B Journal of the Optical Society of America B, Optical Society of America, 2018, 35 (12), pp.3004-3013. ⟨10.1364/JOSAB.35.003004⟩ |
| ISSN: | 1520-8540 0740-3224 |
| DOI: | 10.1364/josab.35.003004 |
| Popis: | International audience; Power scaling of end-pumped laser rod amplifiers is challenging due to beam distortions at high powers. It is difficult to understand these distortions since several physical effects contribute at the same time. We present a detailed investigation of the beam distortions by numerical simulation and experiments in different gain regimes (passive regime with no gain, small signal gain regime, saturated gain regime) in order to decouple effects caused by thermal lensing from aberrations induced by the transversal gain profile. Simulation and experiment are in good agreement and show the influence of the gain regime in details and reveal a significant impact of the transversal gain profile on the output beam quality. |
| Databáze: | OpenAIRE |
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