Mode discrimination of unstable resonators with spatial filters and by phase modification
Optics Letters, Vol. 4, Issue 7, pp. 193-195 (1979)
http://dx.doi.org/10.1364/OL.4.000193
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Abstract
The effects of an intracavity spatial filter in a half-symmetric unstable bare cavity resonator have been studied using iterative propagation techniques to obtain pure l-mode resonator solutions. The results indicate that the mode-loss difference is highest when the spatial-filter radius is at the first or third dark ring of the Airy pattern at the spatial filter. Furthermore, the results are not directly dependent on the resonator-equivalent Fresnel number. Also presented are results indicating that aspherizing the feedback mirror can be done in such a way as to increase mode discrimination.
© 1979 Optical Society of America
Citation
W. H. Southwell, "Mode discrimination of unstable resonators with spatial filters and by phase modification," Opt. Lett. 4, 193-195 (1979)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-4-7-193
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