Sun Yunfei, Tao Chongben, Sun Jiandong, Qin Hua, Ban Jianmin, Luo Heng. Filter-Enhanced High-Sensitivity HEMT Terahertz Detector at Room Temperature[J]. Acta Optica Sinica, 2018, 38(3): 304001
- Acta Optica Sinica
- Vol. 38, Issue 3, 304001 (2018)
![Working principle of detector based on self-mixing mechanism[24]](/richHtml/gxxb/2018/38/3/0304001/img_1.jpg)
Fig. 1. Working principle of detector based on self-mixing mechanism[24]
Fig. 2. (a)-(c) Structure factors of different devices; (d) SEM image of filter
Fig. 3. Frequency response curves of filters
Fig. 4. SEM images of (a) detector A and (b) detector B
Fig. 5. Schematic of THz detector test device
Fig. 6. Photoelectric response of detector. (a) G and dG/dVg versus gate voltage; (b) photo current versus gate voltage; (c) power response of detector
Fig. 7. Response speed versus modulation frequency
Fig. 8. Schematic of THz scanning imaging. (a) Transmission imaging; (b) reflection imaging
Fig. 9. Transmission scanning imaging. (a) Key, match and pin; (b) dry leaf
Fig. 10. THz reflection scanning imaging of operating knife placed on cowhide
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20