Computer studies have shown that azimuthal static mirror misfigures as small as λ/20 can lead to severe degradation in the far field on axis intensity for resonators with an annular gain region. This poor far-field pattern can, however, be dramatically improved by the use of adaptive elements within the resonator. A rear cone in the resonator had a static misfigure applied to it, and an adaptive ring axicon located in the front of the resonator was deformed in such a way as to compensate for the misfigure of the rear element of the resonator.
© 1980 Optical Society of America
Original Manuscript: September 29, 1979
Published: February 15, 1980
J. B. Shellan, D. A. Holmes, M. L. Bernabe, and A. M. Simonoff, "Adaptive mirror effects on the performance of annular resonators," Appl. Opt. 19, 610-615 (1980)