Journal
OPTICS EXPRESS
Volume 28, Issue 10, Pages 15161-15172Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.392728
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Funding
- National Natural Science Foundation of China [61705039]
- National Key Research and Development Program of China [2015CB352006]
- China Postdoctoral Science Foundation [2017M610389, 2019T120553]
- Fujian Provincial Program for Distinguished Young Scientists in University
- Changjiang Scholar Program of Chinese Ministry of Education [IRT_15R10]
- Special Funds of the Central Government Guiding Local Science and Technology Development [2017L3009]
- Young Scholars Program of the Fujian Education Department of China [JAT190468]
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An optofluidic microbubble Fabry-Perot (OMBFP) cavity was investigated. In contrast to plane-plane FP (PPFP) cavities, the optical mode confinement and stability in an OMBFP were significantly enhanced. The optical properties of the OMBFP cavity, including the quality (Q) factor, effective mode area, mode distribution as a function of the core refractive index, microbubble position, and mirror tilt angle, were investigated systematically using the finite element method. In optofluidic lasing experiments, a low lasing threshold of 1.25 mu J/mm(2), which was one order magnitude lower than that of the PPFP, was achieved owing to improved modal lateral confinement. Since the microbubble acts as a micro-lens and microfluidic channel in the parallel FP cavity, mode selection and cell-dye laser were easily realized in the OMBFP cavity. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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