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Whispering Gallery Mode Laser Based on a Self‐Assembled Organic Octahedron Microcrystal Microresonator
Author(s) -
Xu Zhenzhen,
Liao Qing,
Wang Xuedong,
Fu Hongbing
Publication year - 2014
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201400299
Subject(s) - lasing threshold , whispering gallery wave , materials science , laser , mode (computer interface) , octahedron , storytelling , quality (philosophy) , optoelectronics , nanotechnology , optics , computer science , physics , resonator , narrative , wavelength , linguistics , philosophy , quantum mechanics , operating system , ion
The six lateral faces of octahedron microcrystals (OhMCs) self‐assemble from 1,4‐dimethoxy‐2,5‐di[4′‐dimethylamino‐styryl]benzene (DASB), constituting a high‐quality whispering gallery mode cavity. The optimized energy level of H‐aggregates and the high‐quality radial cavity of the OhMC leads to a lasing threshold as low as 6.9 μJ/cm 2 . Moreover, single‐mode lasing is observed from OhMCs with small volumes, making them attractive for practical application in on‐chip laser spectroscopy.