Extremely low excess noise and high sensitivity AlAs0.56Sb0.44 avalanche photodiodes
Sign Up to like & getrecommendations! Published in 2019 at "Nature Photonics"
DOI: 10.1038/s41566-019-0477-4
Abstract: Fast, sensitive avalanche photodiodes (APDs) are required for applications such as high-speed data communications and light detection and ranging (LIDAR) systems. Unfortunately, the InP and InAlAs used as the gain material in these APDs have… read more here.
Keywords: avalanche; avalanche photodiodes; sensitivity; noise ... See more keywords
Excess noise in Al x Ga 1 − xAs/GaAs based quantum rings
Sign Up to like & getrecommendations! Published in 2020 at "Applied Physics Letters"
DOI: 10.1063/5.0002247
Abstract: Cross-correlated noise measurements are performed in etched Al x Ga 1 − xAs/GaAs based quantum rings in equilibrium at a bath temperature of T bath = 4.2 K. The measured white noise exceeds the thermal… read more here.
Keywords: gaas based; quantum rings; excess noise; noise ... See more keywords
Accurate determination of impact ionization coefficient ratio and temperature dependence of InGaAs/InP avalanche photodiodes
Sign Up to like & getrecommendations! Published in 2024 at "AIP Advances"
DOI: 10.1063/5.0212517
Abstract: We propose a broadband noise test method (10 Hz–1 MHz) using a direct power method to measure the excess noise of InGaAs/InP avalanche photodiodes (APDs) with a separate absorption, grading, charge, and multiplication structure. By this… read more here.
Keywords: temperature; excess noise; avalanche photodiodes; ingaas inp ... See more keywords
Excess noise and thermoelectric effect in magnetron-sputtered VO2 thin films
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Applied Physics"
DOI: 10.1063/5.0218097
Abstract: This work presents the excess noise and thermoelectric (Seebeck) measurements on polycrystalline vanadium dioxide (VO2) thin films. Noise spectral power density (SPD) of current fluctuations in the semiconducting (SC) phase had a typical flicker noise… read more here.
Keywords: noise thermoelectric; excess noise; thin films; vo2 thin ... See more keywords
An excess noise measurement system for weak responsivity avalanche photodiodes
Sign Up to like & getrecommendations! Published in 2018 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/aabc8b
Abstract: A system for measuring, with reduced photocurrent, the excess noise associated with the gain in avalanche photodiodes (APDs), using a transimpedance amplifier front-end and based on phase-sensitive detection is described. The system can reliably measure… read more here.
Keywords: measurement; excess noise; system; avalanche photodiodes ... See more keywords
Evaluation of the Imaginary Part of the Magnetic Susceptibility, $\chi ^{\prime \prime }$ , and Application to the Estimation of the Low Frequency, 1/ $f$ , Excess Noise in GMI Sensors
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Magnetics"
DOI: 10.1109/tmag.2017.2686805
Abstract: The equivalent magnetic noise spectral density of giant magnetoimpedance (GMI)-based sensors exhibits a low-frequency excess noise inversely proportional to the frequency (1/f noise). In order to enhance the performance and reach the ultimate and intrinsic… read more here.
Keywords: excess noise; noise; low frequency; chi prime ... See more keywords