Regenerative Terahertz Quantum Detectors
Fuente:
arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866914831406202880 |
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| author | Micheletti, Paolo Faist, Jerome Olariu, Tudor Senica, Urban Beck, Mattias Scalari, Giacomo |
| author_facet | Micheletti, Paolo Faist, Jerome Olariu, Tudor Senica, Urban Beck, Mattias Scalari, Giacomo |
| contents | Because of the ultrafast and photon-driven nature of the transport in their active region, we demonstrate that quantum cascade lasers can be operated as resonantly amplified terahertz detectors. Tunable responsivities up to 50 V/W and noise equivalent powers down to 100 pW/sqrt(Hz) are demonstrated at 4.7 THz. Constant peak responsivities with respect to the detector temperature are observed up to 80K. Thanks to the sub-ps intersubband lifetime electrical bandwidths larger than 20 GHz can be obtained, allowing the detection of optical beatnotes from quantum cascade THz frequency combs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2106_12862 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Regenerative Terahertz Quantum Detectors Micheletti, Paolo Faist, Jerome Olariu, Tudor Senica, Urban Beck, Mattias Scalari, Giacomo Optics Instrumentation and Detectors Because of the ultrafast and photon-driven nature of the transport in their active region, we demonstrate that quantum cascade lasers can be operated as resonantly amplified terahertz detectors. Tunable responsivities up to 50 V/W and noise equivalent powers down to 100 pW/sqrt(Hz) are demonstrated at 4.7 THz. Constant peak responsivities with respect to the detector temperature are observed up to 80K. Thanks to the sub-ps intersubband lifetime electrical bandwidths larger than 20 GHz can be obtained, allowing the detection of optical beatnotes from quantum cascade THz frequency combs. |
| title | Regenerative Terahertz Quantum Detectors |
| topic | Optics Instrumentation and Detectors |
| url | https://arxiv.org/abs/2106.12862 |