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Laser emission is obtained from a slab of nanoporous anodic alumina on an aluminum sheet, infiltrated by rhodamine 6G dye in methanol and pumped by 532 nm, 700 ps laser pulses. The nanostructured surface maintains a continuous flow of the dye solution by wetting and evaporation of methanol. Emission along the stripe of the pump light was measured in a 30 μm-thick nanoporous slab to have sharp peaks...
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