激光阈值
分子束外延
蓝宝石
材料科学
光电子学
激光器
宽禁带半导体
激发
外延
薄膜
锌化合物
光学
锌
波长
纳米技术
图层(电子)
冶金
工程类
物理
电气工程
作者
Darren M. Bagnall,Y. F. Chen,Z. Q. Zhu,Takafumi Yao,S. Koyama,Mengyan Shen,T. Goto
摘要
We report the observation of optically pumped lasing in ZnO at room temperature. Thin films of ZnO were grown by plasma-enhanced molecular beam epitaxy on (0001) sapphire substrates. Laser cavities formed by cleaving were found to lase at a threshold excitation intensity of 240 kW cm−2. We believe these results demonstrate the high quality of ZnO epilayers grown by molecular beam epitaxy while clearly demonstrating the viability of ZnO based light emitting devices.
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