Experimental study demonstrates a droplet dye laser using ionic liquids in a microfluidic device, indicating strong potential for stable on-chip optofluidic light sources.
In this work, by utilizing ionic liquid as the gain medium solvent, which is a new category of materials, we demonstrated a droplet-based dye laser system in a co-flowing microfluidic device. We characterized the droplet laser system and achieved a lasing threshold of 40.1 μJ/mm2. Owning to the unique properties of ionic liquids, such as negligible vapor pressure and good thermal and chemical stability, they offer great potentials for the development of on-chip light sources, tunable optofluidic devices, and sensitive biochemical analysis.
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Zhang et al. (2020) studied this question.
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