Differential absorption ozone Lidar with 4H-SiC single-photon detectors

• URL: http://arxiv.org/abs/2411.04373v1
• Date: Thu, 07 Nov 2024 02:10:55 GMT
• Title: Differential absorption ozone Lidar with 4H-SiC single-photon detectors
• Authors: Xian-Song Zhao, Chao Yu, Chong Wang, Tianyi Li, Bo Liu, Hai Lu, Rong Zhang, Xiankang Dou, Jun Zhang, Jian-Wei Pan,
• Abstract summary: Differential Lidar (DIAL) in the ultraviolet (UV) region is an effective approach for monitoring tropospheric ozone. 4H-SiC single-photon detectors (SPDs) are emergent devices for UV single-photon detection. We demonstrate a 4H-SiC SPD-based ozone DIAL.
• Score: 15.254805694575285
• License:
• Abstract: Differential absorption Lidar (DIAL) in the ultraviolet (UV) region is an effective approach for monitoring tropospheric ozone. 4H-SiC single-photon detectors (SPDs) are emergent devices for UV single-photon detection. Here, we demonstrate a 4H-SiC SPD-based ozone DIAL. We design and fabricate the 4H-SiC single-photon avalanche diode with a beveled mesa structure and optimized layer thickness. An active quenching circuit with a quenching time of 1.03 ns is developed to significantly mitigate the afterpulsing effect while enhancing the maximum count rate. After characterization, the SPD exhibits excellent performance with a photon detection efficiency of 16.6% at 266 nm, a dark count rate of 138 kcps, a maximum count rate of 13 Mcps, and an afterpulse probability of 2.7% at room temperature. Then, we apply two 4H-SiC SPDs in an ozone DIAL. The measured ozone concentrations at altitudes of 1-3.5 km agree well with the results of a commercial ozone DIAL. Our work provides an alternative solution for general UV Lidar applications.

Related papers

• Single photon emitters in monolayer semiconductors coupled to transition metal dichalcogenide nanoantennas on silica and gold substrates [49.87501877273686]
  Transition metal dichalcogenide (TMD) single photon emitters offer numerous advantages to quantum information applications. Traditional materials used for the fabrication of nanoresonators, such as silicon or gallium phosphide (GaP), often require a high refractive index substrate. Here, we use nanoantennas (NAs) fabricated from multilayer TMDs, which allow complete flexibility with the choice of substrate.
  arXiv  Detail & Related papers  (2024-08-02T07:44:29Z)
• Current-Crowding-Free Superconducting Nanowire Single-Photon Detectors [1.0037949839020768]
  Superconducting nanowire single-photon detectors (SNSPDs) excel in dark matter detection, quantum science and technology, and biomedical imaging. We achieve an internal detection efficiency of 94% for a wavelength of 780 nm with a dark count rate of 7 mHz near the onset of saturating detection efficiency.
  arXiv  Detail & Related papers  (2024-07-19T09:59:17Z)
• Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride [62.170141783047974]
  Single photon emitters hosted in hexagonal boron nitride (hBN) are essential building blocks for quantum photonic technologies that operate at room temperature. We experimentally demonstrate large-area arrays of plasmonic nanoresonators for Purcell-induced site-controlled SPEs. Our results offer arrays of bright, heterogeneously integrated quantum light sources, paving the way for robust and scalable quantum information systems.
  arXiv  Detail & Related papers  (2024-05-03T23:02:30Z)
• Compact free-running InGaAs/InP single-photon detector with 40% detection efficiency and 2.3 kcps dark count rate [13.246618472071553]
  Free-running InGaAs/InP single-photon detectors (SPDs) are the key components for applications requiring asynchronous single-photon detection in the near-infrared region. Here, we present the implementation of a compact four-channel multimode fiber coupling free-running InGaAs/InP SPD, with the best overall performance to date.
  arXiv  Detail & Related papers  (2023-10-26T02:56:01Z)
• Site-Selective Enhancement of Superconducting Nanowire Single-Photon Detectors via Local Helium Ion Irradiation [0.0]
  We utilize local helium ion irradiation to tune single-photon detection efficiency, switching current, and critical temperature of individual devices on the same chip. For 12nm thick highly absorptive SNSPDs, we observe an increase of the system detection efficiency from $ 0.05,%$ to $(55.3 pm 1.1),%$ following irradiation. Investigations of the scaling of superconducting thin film properties with irradiation up to a fluence of $2600 revealed an increase of sheet resistance and a decrease of critical temperature towards high fluences.
  arXiv  Detail & Related papers  (2023-05-23T15:51:13Z)
• Free-running 4H-SiC single-photon detector with ultralow afterpulse probability at 266 nm [14.664385624192663]
  We report a 4H-SiC single-photon avalanche diode (SPAD) based free-running UVSPD with ultralow afterpulse probability. The compact UVSPD is then characterized, exhibiting a typical performance of 10.3% PDE, 133 kcps dark count rate and 0.3% afterpulse probability at 266 nm.
  arXiv  Detail & Related papers  (2023-02-20T03:00:12Z)
• A highly-sensitive broadband superconducting thermoelectric single-photon detector [62.997667081978825]
  A thermoelectric detector (TED) converts a finite temperature difference caused by the absorption of a single photon into an open circuit thermovoltage. Our TED is able to reveal single-photons of frequency ranging from about 15 GHz to about 150 PHz depending on the chosen design and materials.
  arXiv  Detail & Related papers  (2023-02-06T17:08:36Z)
• Photophysics of Intrinsic Single-Photon Emitters in Silicon Nitride at Low Temperatures [97.5153823429076]
  A robust process for fabricating intrinsic single-photon emitters in silicon nitride has been recently established. These emitters show promise for quantum applications due to room-temperature operation and monolithic integration with the technologically mature silicon nitride photonics platform.
  arXiv  Detail & Related papers  (2023-01-25T19:53:56Z)
• Hot-Band Absorption Can Mimic Entangled Two-Photon Absorption [52.77024349608834]
  We investigated the fluorescence signals from Rhodamine 6G and LDS798 excited with a CW laser or an entangled photon pair source at 1060 nm. We observed a signal that originates from hot-band absorption (HBA), which is one-photon absorption from thermally-populated vibrational levels of the ground electronic state. For the typical conditions under which E2PEF measurements are performed, contributions from the HBA process could lead to a several orders-of-magnitude overestimate of the quantum advantage for excitation efficiency.
  arXiv  Detail & Related papers  (2021-11-10T21:17:47Z)
• Temperature insensitive type II quasi-phasematched spontaneous parametric downconversion [62.997667081978825]
  The temperature dependence of the refractive indices of potassium titanyl phosphate (KTP) are shown to enable quasi-phasematched type II spontaneous parametric downconversion. We demonstrate the effect experimentally, observing temperature-insensitive degenerate emission at 1326nm, within the telecommunications O band. This result has practical applications in the development of entangled photon sources for resource-constrained environments.
  arXiv  Detail & Related papers  (2020-12-09T16:14:15Z)
• InGaAs/InP single-photon detectors with 60% detection efficiency at 1550 nm [15.989748107410705]
  InGaAs/InP single-photon detectors (SPDs) are widely used for near-infrared photon counting in practical applications. Here we present the implementation of high-frequency gating InGaAs/InP SPD with a PDE as high as 60% at 1550 nm.
  arXiv  Detail & Related papers  (2020-07-14T03:28:36Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.