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Profile-broaden ultraviolet lasing from whispering gallery mode cavity in crown-like zinc oxide

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【Author】 WANG Ma-hua;ZHU Guang-ping;JU Yong-feng;JI Ren-dong;FU Li-hui;Faculty of Electronic and Electrical Engineering,Huaiyin Institute of Technology;School of Physics and Electronic Information, Huaibei Normal University;

【机构】 Faculty of Electronic and Electrical Engineering,Huaiyin Institute of Technology； School of Physics and Electronic Information, Huaibei Normal University；

【摘要】 The crown-like zinc oxide(Zn O)samples,which are composed of a hexagonal cap and a tower-like shaft,are prepared by vapor transport method.The hexagonal cap,working as a whispering gallery mode(WGM)resonant cavity,demonstrates density-dependent ultraviolet(UV)lasing emission with a broadened and squared photoluminescence(PL)profile under UV excitation at 355 nm.Theoretical analyses based on Fermi golden rule show that the broadened spectrum profile results from the special optical mode density characteristics in a WGM micro-cavity,which is in agreement with the observed results.更多还原

【Abstract】 The crown-like zinc oxide(Zn O) samples, which are composed of a hexagonal cap and a tower-like shaft, are prepared by vapor transport method. The hexagonal cap, working as a whispering gallery mode(WGM) resonant cavity, demonstrates density-dependent ultraviolet(UV) lasing emission with a broadened and squared photoluminescence(PL) profile under UV excitation at 355 nm. Theoretical analyses based on Fermi golden rule show that the broadened spectrum profile results from the special optical mode density characteristics in a WGM micro-cavity, which is in agreement with the observed results.更多还原

【关键词】 lasing； gallery； ultraviolet； crown； hexagonal； resonant； exciton； golden； tower； Fermi；

【基金】 supported by the National Natural Science Foundation of China(Nos.60725413 and 61401173);the National Spark Program(No.2013GA690405);the Natural Science Foundation of Education Bureau of Jiangsu Province(Nos.12KJD510003 and 13KJD510002);the Natural Science Foundation of Anhui Province in China(No.11040606M10)

【文献出处】 Optoelectronics Letters ,光电子快报(英文版) , 编辑部邮箱 ,2015年02期

【分类号】TN304.21
【被引频次】1
【下载频次】30

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