Terahertz and Infrared Uncooled Detector Based on a Microcantilever as a Radiation Pressure Sensor
We consider a far infrared (terahertz), room-temperature detector based on a microcantilever sensor of the radiation pressure. This system has a significantly higher sensitivity than existing uncooled detectors in the far infrared (terahertz) spectral region. The significant enhancement of sensitivi...
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Main Authors | , , , |
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Format | Journal Article |
Language | English |
Published |
05.03.2007
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Subjects | |
Online Access | Get full text |
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Summary: | We consider a far infrared (terahertz), room-temperature detector based on a
microcantilever sensor of the radiation pressure. This system has a
significantly higher sensitivity than existing uncooled detectors in the far
infrared (terahertz) spectral region. The significant enhancement of
sensitivity is due the combination non-absorption detection method and high
quality optical microcavity. Our theoretical analysis of the detector
sensitivity and numerical simulations demonstrate that the narrowband
heterodyne detector with the band width 30 MHz has a minimal measurable
intensity by three orders of magnitude less than conventional uncooled
detectors. In the case of the broadband detector, the noise equivalent
temperature difference (NETD) is 7.6 mK, which is significantly smaller than
for conventional uncooled thermal detectors. |
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DOI: | 10.48550/arxiv.physics/0703042 |