Photoluminescence and Two-Photon Lasing of ZnO:Sn Microdisks

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• 作者：Jun Dai ; Chunxiang Xu ; Jitao Li ; Yi Lin ; Jiyuan Guo ; Gangyi Zhu
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：July 3, 2014
• 年：2014
• 卷：118
• 期：26
• 页码：14542-14547
• 全文大小：383K
• ISSN：1932-7455

文摘

ZnO:Sn microdisks were fabricated by a vapor phase transport method at different pressure conditions. The photoluminescence of the ZnO:Sn microdisks was measured, and the origination of defect emission was attributed to the oxygen vacancy defects. Under the excitation of the 532 nm line of a femtosecond pulsed laser, two-photon absorption induced UV amplified spontaneous emission and whispering-gallery mode lasing were observed from the ZnO:Sn microdisks. The electron鈥揾ole plasma induced red-shift and broadening of the amplified spontaneous emission and lasing emission were demonstrated when the excitation power was increased. In addition, the WGM lasing light distribution was simulated by a numerical method.