Simulation and experimental investigation of beam distortions in end-pumped laser rod amplifiers

Abstract : 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.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01932597
Contributor : Philipp Albrodt <>
Submitted on : Friday, November 23, 2018 - 10:56:55 AM
Last modification on : Thursday, December 6, 2018 - 1:14:23 AM

Files

2018_JOSAB_lastversionbeforepu...
Files produced by the author(s)

Identifiers

Citation

Philipp Albrodt, Xavier Délen, Mondher Besbes, Fabien Lesparre, Patrick Georges. Simulation and experimental investigation of beam distortions in end-pumped laser rod amplifiers. Journal of the Optical Society of America. B, Optical Physics, The Society, 2018, 35 (12), pp.3004-3013. ⟨10.1364/JOSAB.35.003004⟩. ⟨hal-01932597⟩

Share

Metrics

Record views

126

Files downloads

283