Precise simulation of solid-state amplifiers

Third party funded individual grant


Project Details

Project leader:
Prof. Dr. Christoph Pflaum

Project members:
Ramon Springer

Contributing FAU Organisations:
Professur für Informatik (Numerische Simulation mit Höchstleistungsrechnern)

Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
Start date: 01/01/2016
End date: 31/12/2019


Research Fields

Simulation von Lasern
Professur für Informatik (Numerische Simulation mit Höchstleistungsrechnern)


Abstract (technical / expert description):


Pulsed and ultrashort pulsed lasers are used in various technical applications.In particular research on powerful ultrashort pulsed lasers is needed, since such lasers are important for future developments in automotive industry. Since the development of laser resonators is limited, research has to focus on new laser amplifiers in order to archive more efficient and powerful laser sources.Simulation is an important tool for further development on laser sources. Reasons are the complex physical phenomena in laser amplifiers. Using simulation, engineers can analyze these phenomena and optimize laser amplification systems. Such simulations have to include accurate 3-dimensional simulation of birefringence, depolarization effects, thermal effects, and nonlinear effects described by rate equations.Although lots of research has been done on the development of new laser sources, the development of new simulation tools for lasers was neglected. Thus, the aim of this research project is to develop new models and algorithms for the simulation of laser amplifiers. Here, we focus on solid-state crystals like Yb:YAG as active medium. Furthermore, we consider amplifiers of short and ultrashort pulsed laser beams with high or low repetition rate. The simulation models take into account thermal effects, depolarization effects, and spectral behavior of the laser amplifier. Single pass, double pass, and multi pass laser amplifiers are simulated. The main research question is which kind of simulation techniques have to be combined to obtain most accurate simulation results. To this end, new simulation techniques have to be found. The aim is, on the one hand, to obtain accurate simulation results and, on the other, to find algorithms with low computing effort. This requires the comparison of different simulation algorithms.


Publications

Springer, R., & Pflaum, C. (2019). 3D simulation and beam quality improvement of a pulsed Cr,Tm,Ho:YAG laser. Optics Express, 27(16), 22898--22916. https://dx.doi.org/10.1364/OE.27.022898
Pflaum, C., & Springer, R. (2018). Dynamic Mode Analysis with Arbitrary Rate Equations. In SPIE Photonics Europe Proceedings..
Springer, R., & Pflaum, C. (2018). Influence of interionic energy transfer mechanisms in Tm,Ho:YAG on the maximum extractable energy in regenerative amplifiers. In Proceedings of the SPIE Photonics Europe.
Springer, R., & Pflaum, C. (2018). Influence of interionic energy transfer mechanisms in Tm,Ho:YAG on the maximum extractable energy in regenerative amplifiers. In SPIE Photonics Europe Proceedings..
Springer, R., Alexeev, I., Heberle, J., & Pflaum, C. (2018). Simulation of energy buildups in solid-state regenerative amplifiers for 2-μm emitting lasers. In Proceedings of the SPIE Photonics West.
Springer, R., Alexeev, I., Heberle, J., & Pflaum, C. (2018). Simulation of energy buildups in solid-state regenerative amplifiers for 2-μm emitting lasers. In W. Andrew Clarkson, Ramesh K. Shori (Eds.), SPIE Photonics West Proceedings. (pp. 1051106-1 - 1051106-10). SPIE Digital Library.
Rall, P.L., Springer, R., & Pflaum, C. (2017). 3D Ray Tracing Model for Laser Beam influenced by Thermal Lensing (Master thesis).
Rall, P.L., Springer, R., & Pflaum, C. (2017). 3D Ray Tracing Model for Laser Beams Influenced by Thermal Lensing in Solid-State Gain Media (Master thesis).

Last updated on 2019-22-05 at 14:29