6 papers · 1 filter
Optimizing the light penetration depth in APDs and SPADs for high gain-bandwidth and ultra-wide spectral response
Ahasan Ahamed, Cesar Bartolo-Perez, Ahmed Sulaiman Mayet +7
Controlling light penetration depth in Avalanche Photodiodes (APDs) and Single Photon Avalanche Diodes (SPADs) play a major role in achieving high multiplication gain by delivering…
Reconstruction-based spectroscopy using CMOS image sensors with random photon-trapping nanostructure per sensor
Ahasan Ahamed, Cesar Bartolo-Perez, Ahmed Sulaiman Mayet +4
Optical spectrometers are widely used scientific equipment with many applications involving material characterization, chemical analysis, disease diagnostics, surveillance, etc. Em…
Optimization of CMOS image sensors with single photon-trapping hole per pixel for enhanced sensitivity in near-infrared
E. Ponizovskaya Devine, Ahasan Ahamed, Ahmed S. Mayet +7
The optimization of silicon photodiode-based CMOS sensors with backside-illumination for 300-1000 nm wavelength range was studied. It was demonstrated that a single hole on a photo…
Avalanche Photodetectors with Photon Trapping Structures for Biomedical Imaging Applications
Cesar Bartolo-Perez, Soroush Ghandiparsi, Ahmed S. Mayet +8
Enhancing photon detection efficiency and time resolution in photodetectors in the entire visible range is critical to improve the image quality of time-of-flight (TOF)-based imagi…
Maximizing absorption in photon trapping ultra-fast silicon photodetectors
Cesar Bartolo-Perez, Wayesh Qarony, Soroush Ghandiparsi +9
Silicon photodetectors operating at near-infrared wavelengths with high-speed and high sensitivity are becoming critical for emerging applications, such as Light Detection and Rang…
Single Microhole per Pixel in CMOS Image Sensor with Enhanced Optical Sensitivity in Near-Infrared
E. Ponizovskaya Devine, Wayesh Qarony, Ahasan Ahamed +7
Silicon photodiode based CMOS sensors with backside-illumination for 300 to 1000 nm wavelength range were studied. We showed that a single hole in the photodiode increases the opti…