Hybrid integration between long focus microlens array and IR detector array

被引:13
作者
Chen, SH [1 ]
Yi, XJ [1 ]
Li, Y [1 ]
He, M [1 ]
Kong, LB [1 ]
Ma, H [1 ]
机构
[1] Huazhong Univ Sci & Technol, Dept Optoelect Engn, Wuhan 430074, Peoples R China
来源
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES | 2001年 / 22卷 / 03期
关键词
microlens array; step simulation; ion beam etching; hybrid integration; focal plane array (FPA);
D O I
10.1023/A:1010737521182
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A special method, named step simulation method, is proposed for fabricating Si microlens array to improve the performance of infrared focal plane array (IR FPA). The focus length of rectangle-based multistep microlens array with element dimension of 40 mum X 30 mum is 885.4 mum by the method, which is much longer than the focus length of microlens array fabricated by conventional Fresnel binary optics technique., The large-scale 256 X 256 element microlens array is hybrid-integrated with the PtSi Schottky-barrier IR FPA by optical adhesive. The test results show that diffractive spot size of the microlens is 17 mum X 15 mum and the average optical response of the IR FPA is increased by a factor of 2.4.
引用
收藏
页码:393 / 398
页数:6
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