Abstract
The theoretical and experimental investigation of field properties of
annular waveguide lasers with a Fabry–Perot resonator is presented.
Oscillation with high azimuthal mode order leads to an annular intensity
distribution in the far field with almost linear dependence of the annular
diameter on the mode order. Low-order fields form a distinct focal spot in the
far field. A laser device with a discharge area of 6-cm diameter and 53-cm
length yields an output power of 600 W.
© 1997 Optical Society of America
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