Ultra-sensitive heterodyne detection at room temperature in the atmospheric windows
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arXiv
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| Autori principali: | , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913623421485056 |
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| author | Saemian, Mohammadreza Del Balzo, Livia Gacemi, Djamal Todorov, Yanko Rodriguez, Etienne Lopez, Olivier Darquié, Benoît Li, Lianhe Davies, Alexander Giles Linfield, Edmund Vasanelli, Angela Sirtori, Carlo |
| author_facet | Saemian, Mohammadreza Del Balzo, Livia Gacemi, Djamal Todorov, Yanko Rodriguez, Etienne Lopez, Olivier Darquié, Benoît Li, Lianhe Davies, Alexander Giles Linfield, Edmund Vasanelli, Angela Sirtori, Carlo |
| contents | We report room temperature heterodyne detection of a quantum cascade laser beaten with a local oscillator on a unipolar quantum photodetector in two different atmospheric windows, at 4.8 $μ$m and 9 $μ$m. A noise equivalent power of few pW is measured by employing an active stabilization technique in which the local oscillator and the signal are locked in phase. The measured heterodyne noise equivalent power is six orders of magnitude lower than that obtained with direct detection. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_17633 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ultra-sensitive heterodyne detection at room temperature in the atmospheric windows Saemian, Mohammadreza Del Balzo, Livia Gacemi, Djamal Todorov, Yanko Rodriguez, Etienne Lopez, Olivier Darquié, Benoît Li, Lianhe Davies, Alexander Giles Linfield, Edmund Vasanelli, Angela Sirtori, Carlo Optics Atmospheric and Oceanic Physics Applied Physics Instrumentation and Detectors Quantum Physics We report room temperature heterodyne detection of a quantum cascade laser beaten with a local oscillator on a unipolar quantum photodetector in two different atmospheric windows, at 4.8 $μ$m and 9 $μ$m. A noise equivalent power of few pW is measured by employing an active stabilization technique in which the local oscillator and the signal are locked in phase. The measured heterodyne noise equivalent power is six orders of magnitude lower than that obtained with direct detection. |
| title | Ultra-sensitive heterodyne detection at room temperature in the atmospheric windows |
| topic | Optics Atmospheric and Oceanic Physics Applied Physics Instrumentation and Detectors Quantum Physics |
| url | https://arxiv.org/abs/2412.17633 |