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- Title
340 GHz lens-coupled 4 × 4 GaAs detector array for terahertz imaging applications.
- Authors
Mingxun Li; Xin Lv; Jinchao Mou; Dalu Guo; Haidong Qiao; Zhaohui Ma; Haidong Hao
- Abstract
A 340 GHz 4 × 4 detector array based on 0.18 µm gallium arsenide technology is presented. Each pixel is composed of a planar logperiodic antenna, a Schottky barrier diode, and a pair of bonding pads. The detector array is mounted on a silicon lens and assembled onto a PCB using the authors' novel flip-chip structure. Off-axis performances of the lens-coupled detector array are demonstrated experimentally, which agree well with the simulated ones. The detector array shows a peak voltage responsivity of 1347 V/W and a noise equivalent power of 2.1 pW/Hz1/2 at 340 GHz, exhibiting much better performance than the CMOS counterpart.
- Subjects
GALLIUM arsenide devices; GALLIUM arsenide transistors; GAS detectors; TERAHERTZ technology; SCHOTTKY barrier diodes
- Publication
Electronics Letters (Wiley-Blackwell), 2018, Vol 54, Issue 20, p1180
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2018.5856