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Open AccessArticle

Spectral Modulation of Optofluidic Coupled-Microdisk Lasers in Aqueous Media

1
Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Shanghai Engineering Research Center of Ultra Precision Optical Manufacturing, Fudan University, Shanghai 200433, China
2
Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(10), 1439; https://doi.org/10.3390/nano9101439
Received: 2 September 2019 / Revised: 8 October 2019 / Accepted: 9 October 2019 / Published: 11 October 2019
(This article belongs to the Special Issue Dynamics and Applications of Photon-Nanostructured Systems)
We present the spectral modulation of an optofluidic microdisk device and investigate the mechanism and characteristics of the microdisk laser in aqueous media. The optofluidic microdisk device combines a solid-state dye-doped polymer microdisk with a microfluidic channel device, whose optical field can interact with the aqueous media. Interesting phenomena, such as mode splitting and single-mode lasing in the laser spectrum, can be observed in two coupled microdisks under the pump laser. We modulated the spectra by changing the gap of the two coupled microdisks, the refractive indices of the aqueous media, and the position of a pump light, namely, selective pumping schemes. This optofluidic microlaser provides a method to modulate the laser spectra precisely and flexibly, which will help to further understand spectral properties of coupled microcavity laser systems and develop potential applications in photobiology and photomedicine. View Full-Text
Keywords: microdisk laser; spectral modulation; optofluidic; coupled microdisk microdisk laser; spectral modulation; optofluidic; coupled microdisk
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MDPI and ACS Style

Guo, Z.; Wang, H.; Zhao, C.; Chen, L.; Liu, S.; Hu, J.; Zhou, Y.; Wu, X. Spectral Modulation of Optofluidic Coupled-Microdisk Lasers in Aqueous Media. Nanomaterials 2019, 9, 1439.

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