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Scaling of Thin Disk Pulse Amplifiers

Speiser, Jochen and Giesen, Adolf (2008) Scaling of Thin Disk Pulse Amplifiers. In: Solid State Lasers XVII: Technology and Devices. Lase 2008 (Part of SPIE Photonics West), 2008-01-19 - 2008-01-24, San Jose, CA (USA). ISBN 9780819470461.

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Abstract

In the past decade, the Thin Disk laser design was very successful as a high power laser design for cw lasers with good beam quality and high efficiency. Several numerical models show that the actually demonstrated output powers are far below the scaling limits due to amplified spontaneous emission (ASE). Also pulsed lasers based on Thin Disk amplifiers achieved comparable high average power, but only with medium pulse energies (about 100 mJ). Numerical models show that ASE effects limit the possible pulse energy to values of a few Joule, using the typical high power cw Thin Disk laser design. To evaluate designs for higher pulse energies a time resolved numerical model of pump absorption and ASE was developed and combined with a model of pulse amplification. The evaluation is focused on quasi-cw pumped pulse amplifiers. It includes the analysis of temperature, stress, deformation and thermal lensing, using finite element methods. This numerical model is used to develop thin disk designs for high output energies.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Scaling of Thin Disk Pulse Amplifiers
Authors:
AuthorsInstitution or Email of Authors
Speiser, JochenUNSPECIFIED
Giesen, AdolfUNSPECIFIED
Date:15 February 2008
Journal or Publication Title:Solid State Lasers XVII: Technology and Devices
Editors:
EditorsEmail
Clarkson, W. AndrewUNSPECIFIED
Hodgson, NormanUNSPECIFIED
Shori, Ramesh K.UNSPECIFIED
ISBN:9780819470461
Status:Published
Keywords:thin disk laser, pulse amplifier, numerical modeling
Event Title:Lase 2008 (Part of SPIE Photonics West)
Event Location:San Jose, CA (USA)
Event Type:international Conference
Event Dates:2008-01-19 - 2008-01-24
Organizer:SPIE
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Jochen Speiser
Deposited On:22 Dec 2008
Last Modified:27 Apr 2009 15:38

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