Normal-Incidence Multiple Quantum-Well Infared Detectors

该提案包括ETDL和康奈尔大学合作设计和制造正入射多量子井红外探测器(QWIP)的项目。作为高性能二维成像阵列的潜在组件，QWIP已被研究。在ETDL，对QWIP的研究使用电子作为载流子，其探测能力与商业上可用的II-VI探测器相媲美。然而，由于电子要经历子带间跃迁的选择规则，探测器阵列的正常入射照明是不可能的。作为对此的回应，最近人们研究了利用空穴带间跃迁的QWIP。

This proposal covers a project to design and fabricate normal-incidence multiple quantum well infrared detectors (QWIPs) in a collaborative effort between ETDL and Cornell University. QWIPs have been investigated as potential components of high performance, two-dimensional imaging arrays. At ETDL, research on the QWIPs use electrons as carriers, with detectivities competitive with II-VI detectors commercially available. However, because of the selection rule for an electron to undergo an intersubband transition normal incidence illumination of a an array of detectors is not possible. In response to this, QWIPs using hole intersubband transitions have recently been investigated.