Pargmann, Carsten and Hall, Thomas and Duschek, Frank and Grünewald, Karin and Handke, Jürgen (2012) Unstable resonator with high magnification and low output coupling. In: Proceedings of SPIE, 8236. SPIE. Conference on Laser Resonators, Microresonators, and Beam Control XIV, 22.-25. Jan. 2012, San Francisco.
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Abstract
The application of standard unstable resonators does not allow for an independent adjustment of the resonator magnification and the output coupling. Either you get a high magnification together with a high output coupling, or vice versa. Certain laser types, like e. g. thin-disc lasers or chemical oxygen iodine lasers, permit only quite low optimum output couplings. The corresponding low resonator magnification is equal to a poor beam quality. In order to apply unstable resonators with a high magnification also to low gain media an additional mirror surface retroreflects a part of the out coupled radiation back into the cavity. The output coupling is reduced efficiently, whereas the resonator magnification stays high. Accordingly low gain media can be operated with high power extraction in combination with a good beam quality. Numerical and experimental investigations are shown. The experiments are performed with a chemical oxygen iodine laser operating at a wavelength of 1.315 mu m and demonstrate the feasibility of this resonator design.
Item URL in elib: | https://elib.dlr.de/81587/ | ||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||||||||
Title: | Unstable resonator with high magnification and low output coupling | ||||||||||||||||||
Authors: |
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Date: | January 2012 | ||||||||||||||||||
Journal or Publication Title: | Proceedings of SPIE | ||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||
Open Access: | No | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||
Volume: | 8236 | ||||||||||||||||||
Editors: |
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Publisher: | SPIE | ||||||||||||||||||
Series Name: | Laser Resonators, Microresonators, and Beam Control XIV | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | optical resonator, unstable resonator, beam quality, chemical oxygen iodine laser | ||||||||||||||||||
Event Title: | Conference on Laser Resonators, Microresonators, and Beam Control XIV | ||||||||||||||||||
Event Location: | San Francisco | ||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||
Event Dates: | 22.-25. Jan. 2012 | ||||||||||||||||||
Organizer: | SPIE | ||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||
HGF - Program Themes: | Aircraft Research (old) | ||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||
DLR - Program: | L AR - Aircraft Research | ||||||||||||||||||
DLR - Research theme (Project): | L - Laser Research and Technology (old) | ||||||||||||||||||
Location: | Lampoldshausen | ||||||||||||||||||
Institutes and Institutions: | Institute of Technical Physics > Atmospheric Propagation and Effect | ||||||||||||||||||
Deposited By: | Pargmann, Dr. Carsten | ||||||||||||||||||
Deposited On: | 20 Mar 2013 11:06 | ||||||||||||||||||
Last Modified: | 20 Mar 2013 11:06 |
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