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
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