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Whispering‐Gallery‐Mode Microlaser Based on Self‐Assembled Organic Single‐Crystalline Hexagonal Microdisks
Author(s) -
Wang Xuedong,
Liao Qing,
Kong Qinghua,
Zhang Yi,
Xu Zhenzhen,
Lu Xiaomei,
Fu Hongbing
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201310659
Subject(s) - lasing threshold , whispering gallery wave , laser linewidth , materials science , optoelectronics , resonator , q factor , photonics , hexagonal crystal system , whispering gallery , semiconductor , laser , optics , chemistry , physics , wavelength , crystallography
Abstract Whispering‐gallery‐mode (WGM) resonators of semiconductor microdisks have been applied for achieving low‐threshold and narrow‐linewidth microlasers, but require sophisticated top‐down processing technology. Organic single‐crystalline hexagonal microdisks (HMDs) of p ‐distyrylbenzene (DSB) self‐assembled from solution can function as WGM microresonators with a cavity quality factor (Q) of 210. Both multiple‐ and single‐mode lasing had been achieved using DSB HMDs with an edge length of 4.3 and 1.2 μm, respectively. These organic microdisks fabricated by bottom‐up self‐assembly approach may offer potential applications as low‐threshold microlaser sources for photonic circuit integration.