DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Unstable resonator with high magnification and low output coupling

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.

Full text not available from this repository.


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/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Unstable resonator with high magnification and low output coupling
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pargmann, Carstencarsten.pargmann (at) dlr.deUNSPECIFIED
Hall, Thomasthomas.hall (at) dlr.deUNSPECIFIED
Duschek, FrankFrank.Duschek (at) dlr.deUNSPECIFIED
Grünewald, Karinkarin.gruenewald (at) dlr.deUNSPECIFIED
Handke, Jürgenjuergen.handke (at) dlr.deUNSPECIFIED
Date:January 2012
Journal or Publication Title:Proceedings of SPIE
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Kudryashov, Alexis V.UNSPECIFIED
Ilchenko, Vladimir S.UNSPECIFIED
Series Name:Laser Resonators, Microresonators, and Beam Control XIV
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
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

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.