Nineteen-element in-phase coherent vertical-cavity surface-emitting laser array with low side lobe intensity.
Nineteen-element in-phase coherent vertical-cavity surface-emitting laser array with low side lobe intensity.
复制标题
DOI：
10.1364/oe.27.000774
复制
发表时间：
2019-01
期刊：
影响因子：
3.8
通讯作者：
M. Xun;Yun Sun;Jingtao Zhou;Chen Xu;Yiyang Xie;Hao Wang;Q. Kan;Xinyu Liu;Zhi Jin;Dexin Wu
中科院分区：
文献类型：
--
作者：
M. Xun;Yun Sun;Jingtao Zhou;Chen Xu;Yiyang Xie;Hao Wang;Q. Kan;Xinyu Liu;Zhi Jin;Dexin Wu
为了评估相参VCSEL阵列的特性行为，我们应用天线相干理论。利用质子注入技术首次实现了具有近衍射限制光束的大型19元锁相VCSEL阵列。在远场模式下，中心波瓣的强度大约是旁波瓣的四倍。远场叶的半最大角全宽（FWHM）只有1.42度。理论与实验的良好匹配为优化器件开辟了新的前景。
We apply the antenna coherence theory in order to evaluate characteristic behavior of phase-coherent VCSEL arrays. Large 19-element phase-locked VCSEL arrays with a near-diffraction-limited beam were firstly realized using proton implantation technology. The central lobe intensity is about four times that of side lobes in far-field patterns. The angular full width at half maximum (FWHM) of the far field lobes is only 1.42 degrees. A good matching between theory and experiment opens new perspectives for optimizing devices.