Infrared nanoantenna apparatus and method for the manufacture thereof
| DWPI Title: Apparatus used e.g. to detect and monitor radiation across an infrared spectral range for defense applications, comprises a photodetector comprising a semiconductor body, a periodically patterned metal nanoantenna and an electrode |
| Abstract: An exemplary embodiment of the present invention is a photodetector comprising a semiconductor body, a periodically patterned metal nanoantenna disposed on a surface of the semiconductor body, and at least one electrode separate from the nanoantenna. The semiconductor body comprises an active layer in sufficient proximity to the nanoantenna for plasmonic coupling thereto. The nanoantenna is dimensioned to absorb electromagnetic radiation in at least some wavelengths not more than 12 μm that are effective for plasmonic coupling into the active layer. The electrode is part of an electrode arrangement for obtaining a photovoltage or photocurrent in operation under appropriate stimulation. |
| Use: The apparatus including the photodetector is useful for detecting and monitoring radiation across an infrared spectral range and harvesting energy from infrared radiation sources for defense applications. |
| Advantage: The apparatus blocks electrical noise without affecting the performance of an optical device at the design frequency band of a frequency selective surface plasmonic structure of the photodetector. |
| Novelty: The apparatus comprises a photodetector comprising: a semiconductor body; a periodically patterned metal nanoantenna disposed on a surface of the semiconductor body; and an electrode (104) separated from the nanoantenna. The semiconductor body comprises an active layer in sufficient proximity to the nanoantenna for plasmonic coupling. The nanoantenna is dimensioned to absorb electromagnetic radiation in wavelengths of less than 12 μ m that are effective for plasmonic coupling into the active layer. The electrode is a part of an electrode arrangement. |
| Filed: 4/26/2013 |
| Application Number: US13871708A |
| Tech ID: SD 11433.2 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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