NDLI: Femtosecond laser processing of microcavity lasers

Content Provider	Springer Nature Link
Author	Zhan, Xuepeng Xu, Huailiang Sun, Hongbo
Copyright Year	2016
Abstract	In this paper, we reviewed the fabrications of functional microcavity lasers in soft materials such as polymer and protein by femtosecond laser processing. High-quality (Q) microdisks with a laser dye (Rhodamine B, RhB) acting as gain medium were fabricated that produced whispering-gallery-mode (WGM) lasing output. We also obtained unidirectional lasing output with a low lasing threshold in a deformed spiral microcavity at room temperature. Photonic-molecule (PM) microlasers were prepared to investigate the interaction and coupling effects of different cavities, and it was found that the distance between the two disks plays an important role in the lasing behaviors. Single-mode lasing was realized from a stacked PM microlaser through Vernier effect. Furthermore we adopted the biocompatible materials, RhB-doped proteins as a host material and fabricated a three-dimensional (3D) WGM microlaser, which operated well both in air and aqueous environment. The sensing of the protein micro-lasers to Na$_{2}$SO$_{4}$ concentration was investigated. Our results of fabricating high-Q microlasers with different materials reveal the potential applications of femtosecond laser processing in the areas of integrated optoelectronic and ultrahigh sensitive bio-sensing devices.
Starting Page	420
Ending Page	427
Page Count	8
File Format	PDF
ISSN	20952759
Journal	Frontiers of Optoelectronics
Volume Number	9
Issue Number	3
e-ISSN	20952767
Language	English
Publisher	Higher Education Press
Publisher Date	2016-09-30
Publisher Institution	Chinese Universities
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	femtosecond laser processing microcavity lasers polymer protein Electrical Engineering Physics Biomedical Engineering
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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