Implementation of the concept of neutral gain modules in thin-disk lasers
Mende, Jens and Spindler, Gerhard and Hall, Thomas and Schmid, Elke and Speiser, Jochen and Giesen, Adolf (2012) Implementation of the concept of neutral gain modules in thin-disk lasers. Applied Physics B, Vol. 108 (Issue 4), pp. 779-792. Springer-Verlag. DOI: DOI 10.1007/s00340-012-5174-7. ISSN 0946-2171.
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Experimental results of the implementation of our concept of neutral gain modules (NGM) in high-power thin-disk lasers are presented. To demonstrate power scalability and high brightness, series of NGMs comprising up to four Yb:YAG thin-disk laser modules have been integrated in various ways into stable and unstable resonators. Furthermore, to compensate for the parabolic component of the remaining thermal lens effects in the high-power regime, an intracavity deformable mirror was embedded. On the basis of the underlying concept, in our experiments an output power of nearly 3 kW with a beam propagation factor M2 = 5 as well as a brightness up to B = 21 GW/(cm2 sr) could be demonstrated. Compensating systematically for the nonparabolic components of the phase aberrations, the concept also enables a further enhancement of the beam quality. The principle is transferable to other laser configurations, e.g., master oscillator power amplifier systems.
|Title:||Implementation of the concept of neutral gain modules in thin-disk lasers|
|Date:||16 September 2012|
|Journal or Publication Title:||Applied Physics B|
|In Open Access:||No|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 779-792|
|Series Name:||Applied Physics B: Lasers and Optics|
|Keywords:||laser, thin-disk laser, power scalability, beam quality, high brightness, neutral gain module, multi disk configuration|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L AR - Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Laser Research and Technology|
|Institutes and Institutions:||Institute of Technical Physics|
|Deposited By:||Dr. Jens Mende|
|Deposited On:||12 Nov 2012 11:11|
|Last Modified:||07 Feb 2013 20:46|
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