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Unstable ring resonator with an intracavity prism beam expander

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1 Author(s)
A. Paxton ; Mission Research Corporation, Albuquerque, NM, USA

A type of unstable ring resonator that includes a prism beam expander is proposed. Neither lenses nor curved mirrors are used, and transverse mode discrimination is achieved, despite the one-dimensional beam expansion, by configuring the cavity mirrors to cause 90° image rotation during a round-trip pass. The output beam has a filled-in rectangular cross section, and the cross section of the resonator mode is also rectangular.

Published in:

IEEE Journal of Quantum Electronics  (Volume:23 ,  Issue: 2 )