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GaN基蓝光VCSEL的制备及光学特性 被引量:10

Fabrication and Characteristics of GaN-based Blue VCSEL
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摘要 利用金属有机物气相沉积技术(MOCVD)在(0001)蓝宝石衬底上生长了Ga N基垂直腔面发射激光器(VCSEL)的多量子阱腔层结构。X射线衍射测量显示该多量子阱具有良好周期结构和平整界面。运用键合及激光剥离技术将该外延片制作成VCSEL,顶部和底部反射镜为极高反射率的介质膜分布布拉格反射镜(DBR)。在室温、紫外脉冲激光的泵浦条件下,观察到了VCSEL明显的激射现象,峰值波长位于447.7 nm,半高宽为0.11 nm,自发辐射因子约为6.0×10-2,阈值能量密度约为8.8 m J/cm2。在大幅度降低制作难度的情况下,得到目前国际最好结果同样数量级的激射阈值。降低器件制作难度有利于制备的重复性,有利于器件的产品化。 Ga N-based multiple quantum wells( MQWs) were epitaxially grown on( 0001)-oriented sapphire substrate by metal organic chemical vapor deposition( MOCVD) technique. X-ray diffraction measurements indicated that the MQWs had good periodic structure and smooth interface. By employing bonding and laser lift-off techniques,the MQW structure was sandwiched between two high reflectivity dielectric distributed Bragg reflectors( DBRs),forming a vertical-cavity surfaceemitting laser( VCSEL). Under optical pumping,the VCSEL achieved laser action at room temperature with a threshold pumping energy density of about 8. 8 mJ / cm^2. The laser emitted a blue light at 447. 7 nm with a narrow linewidth of 0. 11 nm,and had a high spontaneous emission factor of about 6. 0 × 10^- 2.
出处 《发光学报》 EI CAS CSCD 北大核心 2016年第4期452-456,共5页 Chinese Journal of Luminescence
基金 国家自然科学基金(61307115) 福建省教育厅A类科技项目(JA12249) 厦门理工学院高校高层次人才基金(YKJ11026R) 福建省自然科学基金(2013J05104)资助项目
关键词 氮化镓 垂直腔面发射激光器 激光剥离技术 光泵浦 激射 GaN VCSEL laser lift-off optical pumping lasing
作者简介 蔡丽娥(1975-),女,福建莆田人,博士,讲师,2011年于厦门大学获得博士学位,主要从事半导体光电子器件方面的研究。E-mail:liecai@xmut.edu.cn
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