Abstract ZnO thin films are deposited on SiO2 substrates by radio-frequency magnetron sputtering. A and B excitons are observed from the absorption spectra at room temperature. A, B and C excitons are observed from the reflectance spectra at 19 K. These results indicate that the obtained ZnO films have a good wurtzite structure. We obtain the stimulated emission resulting from electron-hole plasma. The lasing spectrum is observed, which consist of a large number of narrow peaks with an around 0.5 nm spacing in between, corresponding to a self-formed cavity length of around 31.5 μm. The self-formation of laser cavity in the ZnO thin film is closed related to its the hexagon structure.
Received: 21 September 2004
Revised: 18 January 2005
Accepted manuscript online:
Fund: Project supported by the State Key Development Program for Basic Research of China (Grant No 2003CB314707), the National Natural Science Foundation of China (Grant No 60476005), and the Foundation of the State Education Commission of China for Returned Sc
Cite this article:
Yao Zhi-Gang (姚志刚), Zhang Xi-Qing (张希清), Shang Hong-Kai (商红凯), Teng Xiao-Ying (滕小瑛), Wang Yong-Sheng (王永生), Huang Shi-Hua (黄世华) Lasing action of high quality ZnO thin film deposited by radio-frequency magnetron sputtering 2005 Chinese Physics 14 1205
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