Controllable fabrication and optical properties of Sn-doped ZnO hexagonal microdisk for whispering gallery mode microlaser | Zendy

Jun Dai | Zendy; Chunxiang Xu | Zendy; Xianbo Xu | Zendy; Jiaqi Li | Zendy; Jiyuan Guo | Zendy; Yi Lin | Zendy

Open Access

Controllable fabrication and optical properties of Sn-doped ZnO hexagonal microdisk for whispering gallery mode microlaser

Author(s) -

Jun Dai,

Chunxiang Xu,

Xianbo Xu,

Jiaqi Li,

Jiyuan Guo,

Yi Lin

Publication year - 2013

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4820432

Subject(s) - lasing threshold , materials science , whispering gallery wave , photoluminescence , femtosecond , optoelectronics , doping , exciton , whispering gallery , laser , fabrication , excitation , wavelength , optics , resonator , condensed matter physics , medicine , physics , alternative medicine , pathology , electrical engineering , engineering

We report a controllable method for fabricating hexagonal Sn doped ZnO microdisks. The photoluminescence mechanism of the Sn doped ZnO microdisks is investigated, the defect emission is attributed to the singly charged oxygen vacancy. Under the excitation of a femtosecond pulsed laser with a wavelength of 325 nm, exciton-exciton collision process is clearly demonstrated, and amplified spontaneous emission is further realized under strong excitation. Using the perfect hexagonal symmetric structure of the Sn doped ZnO microdisks, the whispering-gallery mode lasing with high quality factor and fine mode structure is obtained from a single microdisk

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