Soft X-Ray Single-Photon Detection With Superconducting Tantalum Nitride and Niobium Nanowires
arXiv:1210.3675 · doi:10.1109/TASC.2012.2234496
Abstract
We have fabricated ultrafast dark count-free soft X-ray single-photon detectors (X-SNSPDs) from TaN with various conduction path widths, and we compare their properties with corresponding data from a Nb X-SNSPD. The TaN X-SNSPDs offer an improved detector performance regarding device detection efficiency, latching and pulse amplitudes. Wide conduction paths allow for a certain energy-resolving capability in contrast to narrow TaN conduction paths. However, wide paths also limit the detection efficiency at low temperatures, which can be explained within a hot-spot model.
arXiv comment5 pages, 4 figures, 1 table
References in corpus (7)
- Kinetic-inductance-limited reset time of superconducting nanowire photon counters
- Electrothermal feedback in superconducting nanowire single-photon detectors
- Reset dynamics and latching in niobium superconducting nanowire single-photon detectors
- Tantalum nitride superconducting single-photon detectors with low cut-off energy
- An ultra-fast superconducting Nb nanowire single-photon detector for soft X-rays
- Nonlatching Superconducting Nanowire Single-Photon Detection with Quasi-Constant-Voltage Bias
- Nanoscale Fabrication by Intrinsic Suppression of Proximity-Electron Exposures and General Considerations for Easy & Effective Top-Down Fabrication
Cited by in corpus (4)
- Superconducting nanowire for single-photon detection: progress, challenges and opportunities
- An optics-free computational spectrometer using a broadband and tunable dynamic detector
- Numerical analysis of detection-mechanism models of SNSPD
- Temperature-dependence of detection efficiency in NbN and TaN SNSPD