Modeling and simulation of ultra-short pulse amplification

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Pflaum C, Rahimi Z
Title edited volumes: Proceedings of SPIE - The International Society for Optical Engineering
Publisher: SPIE
Publishing place: USA, Bellingham
Publication year: 2016
Title of series: SPIE Proceedings
Volume: 9726
Conference Proceedings Title: Solid State Lasers XXV: Technology and Devices
ISBN: 9781628419610
ISSN: 1996-756X


Abstract


Ultra-short pulses with high average power are required for a variety of technical and medical applications. Single, multi-pass, and regenerative amplifiers are used, in order to increase the power of ultra-short lasers. Typical laser crystals for such amplifiers include Ti:Sapphire or Yb:YAG laser crystals. Difficulties in the amplification of ultra-short pulses include gain narrowing effects and dispersion effects in the laser crystal. In particular, these complications arise, when a pulse stretcher is needed before amplification of the laser beam. We present a technique to model and simulate the amplification of ultra-short pulses. This technique allows to model both gain narrowing effects and decrease of beam quality caused by amplification of the laser beam. This requires a detailed 3-dimensional simulation of population inversion. Gain narrowing effects are taken into account by analyzing the gain of the spectrum of the laser beam. It is important to distinguish amplifiers with one or only two passes and a regenerative amplifier. These two different kind of amplifiers are modeled by different approaches. A regenerative amplifier is modeled by a set of time dependent rate equations. However, a single pass amplifier is modeled by a set of spatial dependent rate equations. In both cases, a system of rate equations arises from spectral discretization of the laser beam. Detailed simulation results are presented.



FAU Authors / FAU Editors

Pflaum, Christoph Prof. Dr.
Professur für Informatik (Numerische Simulation mit Höchstleistungsrechnern)
Rahimi, Zhabiz
Professur für Informatik (Numerische Simulation mit Höchstleistungsrechnern)


How to cite

APA:
Pflaum, C., & Rahimi, Z. (2016). Modeling and simulation of ultra-short pulse amplification. In Solid State Lasers XXV: Technology and Devices. San Francisco: USA, Bellingham: SPIE.

MLA:
Pflaum, Christoph, and Zhabiz Rahimi. "Modeling and simulation of ultra-short pulse amplification." Proceedings of the Photonics West, San Francisco USA, Bellingham: SPIE, 2016.

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Last updated on 2018-06-08 at 23:50