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(Color online) Normalized transmission (squares) and above-threshold emission spectra (triangles) of the Kastler ring. A spectrum of the central mode lasing is plotted for comparison (circles). Inset: photograph of the distinct off-axial emission, clearly visible as red ring.
(Color online) Left: simulated transmission spectrum of the MC as a function of wavelength, angle, and polarization (note the logarithmic color scale). For particular MC design parameters (see text). Two cavity modes, one starting at (, 0°) and one starting at (, 0°), are clearly visible. Right: experimentally obtained photoluminescence spectrum of 2% DCM in .
Polarization-resolved spectra of the ring emission.
(Color online) Output power of ring emission (triangles) and center emission (circles) as a function of excitation density.
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