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Proceedings Article

Unstable ring resonator with bidirectional propagation through the gain medium: analysis

[+] Author Affiliations
Alan H. Paxton

Air Force Research Lab. (USA)

Proc. SPIE 7913, Laser Resonators and Beam Control XIII, 791302 (February 18, 2011); doi:10.1117/12.879854
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From Conference Volume 7913

  • Laser Resonators and Beam Control XIII
  • Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko
  • San Francisco, California, USA | January 22, 2011

abstract

Unique properties of unstable ring resonators are sometimes useful. A collimated beam in the gain medium may be desirable. Spatial hole burning is eliminated. Beam rotation may be helpful. There is a drawback, however. As usually constructed, a ring resonator has half as many passes through the gain medium as can be achieved with a standing-wave resonator. We have performed a geometrical and a wave-optics numerical simulation of a type of ring resonator that allows counter-propagating collinear passes through the gain medium, while there is also a section with a unidirectional beam. The resonator includes a polarizing beam splitter. The linear polarization is transformed to the orthogonal state by optical elements at the two ends of the region with counter-propagating beams. The wave-optics simulation treats a UR90, for which the output beam is unobscured.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Alan H. Paxton
"Unstable ring resonator with bidirectional propagation through the gain medium: analysis", Proc. SPIE 7913, Laser Resonators and Beam Control XIII, 791302 (February 18, 2011); doi:10.1117/12.879854; http://dx.doi.org/10.1117/12.879854


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