Laser-Induced Relaxation Oscillations in Superconducting Nanobridge Single Photon Detectors
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866916794634076160 |
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| author | Baalbergen, F. B. Zadeh, I. E. de Dood, M. J. A. |
| author_facet | Baalbergen, F. B. Zadeh, I. E. de Dood, M. J. A. |
| contents | We demonstrate novel laser-induced relaxation oscillations in superconducting nanowire single photon detectors (SNSPDs). These oscillations appear when a voltage biased NbTiN nanobridge detector is illuminated with intense pulsed laser light at a repetition rate of $\sim19\text{MHz}$. They differ from the well-known relaxation oscillations by a step-wise increase in frequency and phase locking of the oscillations to the laser pulses. We create a model that incorporates electrical feedback and excludes thermal effects to simulate and explain the origin of the observed laser-induced relaxation oscillations. Qualitative agreement to the experiment is achieved using realistic values for the parameters in the model. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2411_09494 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Laser-Induced Relaxation Oscillations in Superconducting Nanobridge Single Photon Detectors Baalbergen, F. B. Zadeh, I. E. de Dood, M. J. A. Superconductivity Instrumentation and Detectors We demonstrate novel laser-induced relaxation oscillations in superconducting nanowire single photon detectors (SNSPDs). These oscillations appear when a voltage biased NbTiN nanobridge detector is illuminated with intense pulsed laser light at a repetition rate of $\sim19\text{MHz}$. They differ from the well-known relaxation oscillations by a step-wise increase in frequency and phase locking of the oscillations to the laser pulses. We create a model that incorporates electrical feedback and excludes thermal effects to simulate and explain the origin of the observed laser-induced relaxation oscillations. Qualitative agreement to the experiment is achieved using realistic values for the parameters in the model. |
| title | Laser-Induced Relaxation Oscillations in Superconducting Nanobridge Single Photon Detectors |
| topic | Superconductivity Instrumentation and Detectors |
| url | https://arxiv.org/abs/2411.09494 |