A quasi-droplet optofluidic ring resonator laser using a micro-bubble (original) (raw)

Optofluidic ring resonator lasers utilizing micro-bubbles filled with liquid gain medium exhibit significant potential in overcoming challenges faced by traditional droplet lasers. The micro-bubble design provides enhanced optical confinement, high Q-factors, and reliable emission characteristics without evaporation or size variation issues. This work demonstrates lasing using Rhodamine 6G in methanol, achieving a threshold of 300 nJ/mm², and explores the implications of micro-bubbles for bio/chemical applications.