Abstract
All-optical realisations of multiple reduction copy machines (MRCMs) are treated as laser resonators. Intra-cavity elements image a plane inside the resonator onto various parts of itself. In this plane, the intensity cross-section of the lowest-loss mode is a diffraction-limited approximation to a self-similar (or self-affine) fractal. After inclusion of a coherent gain medium resonators of this type constitute lasers with self-similar eigenmodes.
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