Searched for: author%3A%22Padmanabhan%2C+P.%22
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Padmanabhan, P. (author), Zhang, C. (author), Charbon-Iwasaki-Charbon, E. (author)
Direct time-of-flight (DTOF) is a prominent depth sensing method in light detection and ranging (LiDAR) applications. Single-photon avalanche diode (SPAD) arrays integrated in DTOF sensors have demonstrated excellent ranging and 3D imaging capabilities, making them promising candidates for LiDARs. However, high background noise due to solar...
journal article 2019
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Padmanabhan, P. (author), Hancock, Bruce (author), Nikzad, Shouleh (author), Bell, L. Douglas (author), Kroep, Kees (author), Charbon-Iwasaki-Charbon, E. (author)
Gallium nitride (GaN) and its alloys are becoming preferred materials for ultraviolet (UV) detectors due to their wide bandgap and tailorable out-of-band cutoff from 3.4 eV to 6.2 eV. GaN based avalanche photodiodes (APDs) are particularly suitable for their high photon sensitivity and quantum efficiency in the UV region and for their...
journal article 2018
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Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Charbon-Iwasaki-Charbon, E. (author)
Direct time-of-flight (dTOF) image sensors require accurate and robust timing references for precise depth calculation. On-chip timing references are well-known and understood, but for imaging systems where several thousands of pixels require seamless references, area and power consumption limit the use of more traditional synthesizers, such as...
journal article 2018
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Lee, M.J. (author), Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Wang, Tzu Jui (author), Huang, Kuo Chin (author), Yamashita, Yuichiro (author), Yaung, Dun Nian (author), Charbon-Iwasaki-Charbon, E. (author)
We present a high-performance back-illuminated three-dimensional stacked single-photon avalanche diode (SPAD), which is implemented in 45-nm CMOS technology for the first time. The SPAD is based on a P<sup>+</sup>/Deep N-well junction with a circular shape, for which N-well is intentionally excluded to achieve a wide depletion region, thus...
journal article 2018
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Padmanabhan, P. (author)
Over the past two decades, successful orbital missions undertaken to map the Earth, Mars, Mercury and the Moon have proved that light detection and ranging (LIDAR) measurements are powerful catalysts in space exploration. LIDAR based technologies help evaluate the topography of a land and its surface features along with gathering data to...
master thesis 2016
Searched for: author%3A%22Padmanabhan%2C+P.%22
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