IMAGE AMPLIFICATION BY DYE LASERS

Abstract
Wide‐angle high‐gain image amplification has been achieved with several organic dye solution lasers. Rhodamine 6G, rhodamine B, or fluorescein disodium salt in ethanol, side pumped by a nitrogen laser, were used. With excitation pulses of 10−4 J and an active volume of about 1.3×0.1×0.1 mm3, a single‐pass gain of 23 dB/mm and a diffraction‐limited resolution of more than 104 distinguishable spots have been observed.
Keywords

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