Influence of Many-Body Effect on Terahertz Quantum Well Photodetectors

Dixiang, 邵棣祥 Shao; Xuguang, 郭旭光 Guo; Rong, 张 戎 Zhang; Feng, 王 丰 Wang; Zhanglong, 符张龙 Fu; Haixia, 王海霞 Wang; Chen, 姚 辰 Yao; Tao, Zhou; Juncheng, 曹俊诚 Cao; Songlin, 庄松林 Zhuang

doi:10.3788/aos201737.1004001

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the high degree of freedom of the multiparticle system, the many-body effect can only be approximated [12,13]. Considering the interaction between electrons, we established on the basis of density functional theory, combined with the local density approximation (LDA), meanwhile considering including exchange self-energies effect, depolarization-shift effect, and excitonic effect, between the depolarization and exciton interaction contributes to the optical many-body effect.…”

Section: Theoretical Designmentioning

confidence: 99%

Research Progress on Terahertz Quantum-Well Photodetector and Its Application

Shao

Tan

et al. 2021

Front. Phys.

View full text Add to dashboard Cite

Compared with other typical terahertz (THz) detectors, the quantum-well photodetector (QWP) has the advantages of high detection sensitivity, fast response, mature fabrication, small size, and easy integration. Therefore, it is suitable for high-speed detection and imaging applications at the THz band. Researchers, both domestic and overseas, have systematically studied material design and device performance of the THz QWP. The design of the device is such that the peak frequency error is within 8%, the maximum peak responsibility is 5.5 A/W, the fastest response speed is 6.2 GHz, the best noise equivalent power is ∼10−13 W/Hz0.5, and the spectrum range is 2.5–6.5 THz. In this article, firstly the basic principles and theoretical calculations of the THz QWP are described, and then the research progress of the THz QWP in our research group at imaging and communication is reviewed, which looks forward to its future development.

show abstract

Section: Theoretical Designmentioning

confidence: 99%