Fast antenna-coupled terahertz detectors based on uncooled thermoelements
2012
We report on uncooled antenna-coupled thermoelements with a fast response time operating at 0.812 THz. Each sensor pixel consists of 8 thermocouples in series. As thermoelectric structure, a BiSb/Sb freestanding air-bridge is used, fabricated by micromachining. A thermal time constant as low as 22 µs and a NEP of 130 pW/Hz 0.5 at 1 kHz modulation frequency is measured in air at room temperature. The integration capability of the thermocouple sensors enables cost-efficient large-scale detector arrays.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
15
References
3
Citations
NaN
KQI