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Title
Japanese: 
English:Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin films 
Author
Japanese: 湯 子康, Wong Goerge K. L., Yu Ping, 川崎 雅司, 大友 明, 鯉沼 秀臣, 瀬川 勇三朗.  
English: Z. K. Tang, G. K. L. Wong, P. Yu, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa.  
Language English 
Journal/Book name
Japanese: 
English:Applied Physics Letters 
Volume, Number, Page Vol. 72    No. 25    pp. 3270-3272
Published date June 1998 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
File
Official URL <Go to ISI>://000075274400010
 
DOI https://doi.org/10.1063/1.121620
Abstract Room-temperature ultraviolet (UV) laser emission of ZnO microcrystallite thin films is reported. The hexagonal ZnO microcrystallites are grown by laser molecular beam epitaxy. They are self-assembled and parallelly arrayed on sapphire substrates. The facets of the hexagons form natural Fabry-Perot lasing cavities. The optical gain for the room-temperature UV stimulated emission is of an excitonic nature and has a peak value an order of magnitude larger than that of bulk ZnO crystal. The observation of room-temperature UV lasing from the ordered, nano-sized ZnO crystals represents an important step towards the development of nanometer photoelectronics.

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