Abstract
We conducted an investigation on a flexible random laser (RL) device featuring non-noble plasmonic enhancement and scattering. The RL device was created by integrating copper nanowires (Cu NWs) and laser dyes (rhodamine 6G, R6G) into an acrylamide (AM) hydrogel matrix. The substantial overlap between the plasmonic resonance of Cu NWs and the emission of R6G effectively mitigates the requirements for lasing generation. Furthermore, the robust scattering induced by the three-dimensional distribution of Cu NWs contributes to a reduction in the laser threshold. Notably, the unique properties of the AM hydrogel ensure that the laser device exhibits excellent tensile recovery performance. The RL device is capable of maintaining stable lasing performance even after 100 % tensile deformation. This flexible laser device offers the advantages of a straightforward fabrication process, low cost, and robust lasing characteristics, thus paving the way for their advanced application in the future.
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