An IR Photodetector Using an Optically Cooled Micromirror as a Light Pressure Sensor

Details An IR Photodetector Using an Optically Cooled Micromirror as a Light Pressure Sensor An IR Photodetector Using an Optically Cooled Micromirror as a Light Pressure Sensor

2009-12-21

arxiv.org/abs/0912.4218v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 1 figure

Scientific paper

We consider mid-infrared (5 to 25 micrometers), optically cooled detectors based on a microcantilever sensor of the radiation pressure. A significant enhancement of sensitivity is achieved due the combination of low effective temperature (10 K), non-absorption detection, and a high quality optical microcavity. Applications to spectrometry are examined. It is shown that an optically cooled radiation pressure sensor potentially has a sensitivity an order of magnitude better than the best conventional uncooled detectors.

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