Prof. Safa O. Kasap Profile

Prof. Safa O. Kasap

Professor and Canada Research Chair at Univ of Saskatchewan

SPIE Involvement:

Author

Websites:

Company Website

Publications (15)

SPIE Journal Paper | 13 January 2024

Improved temporal performance and optical quantum efficiency of avalanche amorphous selenium for low dose medical imaging

Corey Orlik, Sébastien Léveillé, Salman M. Arnab, Adrian F. Howansky, Jann Stavro, Scott Dow, Safa Kasap, Kenkichi Tanioka, Amir H. Goldan, Wei Zhao

JMI, Vol. 11, Issue 01, 013502, (January 2024) https://doi.org/10.1117/12.10.1117/1.JMI.11.1.013502

KEYWORDS: Tellurium, Selenium, Quantum efficiency, Quantum optics, Electrodes, Dark current, Quantum measurement, Quantum optics experiments, Prototyping, Optical testing

Read Abstract +

Proceedings Article | 4 April 2022 Poster + Paper

Poster + Paper

Improved temporal performance and optical quantum efficiency of avalanche amorphous selenium for low dose medical imaging

Corey Orlik, Sébastien Levéillé, Salman Arnab, Adrian Howansky, Jann Stavro, Scott Dow, Safa Kasap, Kenkichi Tanioka, Amir Goldan, Wei Zhao

Proceedings Volume 12031, 120314L (2022) https://doi.org/10.1117/12.2611820

KEYWORDS: Composites, Tellurium, Scintillators, Prototyping, Green light emitting diodes, Selenium, Oxides, Quantum optics, Quantum efficiency, Photons

Read Abstract +

Proceedings Article | 15 February 2021 Presentation + Paper

Presentation + Paper

Improved optical quantum efficiency and temporal performance of a flat-panel imager with avalanche gain

Corey Orlik, Adrian Howansky, Sébastien Léveillé, Anastasiia Mishchenko, Safa Kasap, Jann Stavro, Amir Goldan, James Scheuermann, Wei Zhao

Proceedings Volume 11595, 1159516 (2021) https://doi.org/10.1117/12.2582035

KEYWORDS: Quantum efficiency, Imaging systems, Sensors, Scintillators, Quantum optics, Prototyping, Oxides, Transistors, Thin films, Signal detection

Read Abstract +

Proceedings Article | 17 March 2011 Paper

Paper

Electrical interface characteristics (I-V), optical time of flight measurements, and the x-ray (20 keV) signal response of amorphous-selenium/crystalline-silicon heterojunction structures

David Hunter, Chu An Ho, George Belev, Giovanni De Crescenzo, Safa Kasap, Martin Yaffe

Proceedings Volume 7961, 79610X (2011) https://doi.org/10.1117/12.877738

KEYWORDS: X-rays, Charge-coupled devices, Selenium, Heterojunctions, Interfaces, Electrodes, X-ray imaging, Time metrology, Silicon, X-ray optics

Read Abstract +

Proceedings Article | 17 March 2011 Paper

Paper

Selenium coated CMOS passive pixel array for medical imaging

Shaikh Hasibul Majid, Amir Goldan, Bahman Hadji, George Belev, Safa Kasap, Karim Karim

Proceedings Volume 7961, 79614L (2011) https://doi.org/10.1117/12.877684

KEYWORDS: Sensors, Selenium, X-rays, CMOS sensors, Transistors, Capacitors, Amplifiers, CMOS technology, X-ray detectors, Imaging arrays

Read Abstract +

Proceedings Article | 17 September 2009 Paper

Paper

Design and modeling of a lateral a-Se MSM photoconductor as indirect conversion X-ray imager

Kai Wang, Feng Chen, George Belev, Safa Kasap, Karim Karim

Proceedings Volume 7449, 74491W (2009) https://doi.org/10.1117/12.829299

KEYWORDS: Photodetectors, Photoresistors, X-ray imaging, External quantum efficiency, Sensors, Electrodes, Scintillators, Selenium, Amorphous silicon, Quantum efficiency

Read Abstract +

Proceedings Article | 13 March 2009 Paper

Paper

Evaluation of the x-ray response of amorphous selenium coated 100-micron pitch a-Si active pixel sensors for tomosynthesis applications

Farhad Taghibakhsh, David Hunter, Karim Karim, George Belev, Safa Kasap, Vladimir Verpakhovski, Martin Yaffe

Proceedings Volume 7258, 72581H (2009) https://doi.org/10.1117/12.813549

KEYWORDS: Sensors, X-rays, Signal to noise ratio, X-ray detectors, X-ray imaging, Photoresistors, Detector arrays, Selenium, Electrodes, Amorphous silicon

Read Abstract +

Proceedings Article | 20 April 2005 Paper

Paper

Ghosting mechanisms in a-Se based direct conversion x-ray image sensors

M. Zahangir Kabir, M. Yunus, S. Kasap, Olivier Tousignant, Habib Mani, Philippe Gauthier

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.594692

KEYWORDS: X-rays, X-ray detectors, Sensors, X-ray imaging, Electrons, Photoresistors, Image sensors, Electric field sensors, Electrodes, Data modeling

Read Abstract +

Proceedings Article | 6 May 2004 Paper

Paper

High-resolution (20 cycles/mm) digital x-ray mammography using amorphous selenium directly coupled to CCD readout devices

David Hunter, Gueorgui Belev, Giovanni DeCresenzo, Safa Kasap, James Mainprize, Gordon Mawdsley, John Rowlands, Charles Smith, Tumay Tumer, Vladimir Verpakhovski, Shi Yin, Martin Yaffe

Proceedings Volume 5368, (2004) https://doi.org/10.1117/12.536001

KEYWORDS: Charge-coupled devices, X-rays, Sensors, Modulation transfer functions, Selenium, Electrodes, X-ray detectors, Digital mammography, CCD image sensors, Aluminum

Read Abstract +

Proceedings Article | 6 May 2004 Paper

Paper

Dependence of x-ray sensitivity of direct conversion x-ray detectors on x-ray exposure and exposure history

Mohammad Kabir, Mohammad Yunus, Safa Kasap

Proceedings Volume 5368, (2004) https://doi.org/10.1117/12.535546

KEYWORDS: X-rays, X-ray detectors, Sensors, Photoresistors, X-ray imaging, Chest, Electrons, Electrodes, Image sensors, Electric field sensors

Read Abstract +

Proceedings Article | 5 June 2003 Paper

Paper

Charge transport and trapping-limited sensitivity and resolution of pixellated x-ray image detectors

Mohammad Kabir, Safa Kasap

Proceedings Volume 5030, (2003) https://doi.org/10.1117/12.479947

KEYWORDS: Electrodes, X-rays, Sensors, Modulation transfer functions, Photoresistors, X-ray detectors, Electrons, Image resolution, Composites, X-ray imaging

Read Abstract +

Proceedings Article | 5 June 2003 Paper

Paper

Active pixel image sensor for large-area medical imaging

Karim Karim, Yurii Vygranenko, Alfredo Avila-Munoz, Denis Striakhilev, Arokia Nathan, Stephen Germann, John Rowlands, George Belev, Cyril Koughia, Robert Johanson, Safa Kasap

Proceedings Volume 5030, (2003) https://doi.org/10.1117/12.480254

KEYWORDS: X-rays, Sensors, Amplifiers, Amorphous silicon, X-ray detectors, Electrons, Capacitance, Aluminum, Medical imaging, Selenium

Read Abstract +

Proceedings Article | 9 May 2003 Paper

Paper

1/f noise in amorphous silicon and silicon-germanium alloys

Robert Johanson, Mehmet Gunes, Safa Kasap

Proceedings Volume 5112, (2003) https://doi.org/10.1117/12.497096

KEYWORDS: Germanium, Amorphous silicon, Temperature metrology, Interference (communication), Silicon, Resistance, Electron transport, Electrodes, Chromium, Resistors

Read Abstract +

Proceedings Article | 3 May 2002 Paper

Paper

Dependence of the DQE of photoconductive x-ray detectors on charge transport and trapping

Mohammad Kabir, Safa Kasap

Proceedings Volume 4682, (2002) https://doi.org/10.1117/12.465590

KEYWORDS: Sensors, X-rays, Photoresistors, Quantum efficiency, X-ray detectors, Medical imaging, Signal attenuation, Interference (communication), Physics, CRTs

Read Abstract +

Proceedings Article | 2 May 1997 Paper

Paper

Flat panel detector for digital radiology using active matrix readout of amorphous selenium

John Rowlands, Wei Zhao, Ira Blevis, Gendi Pang, Winston Ji, Stephen Germann, Safa Kasap, David Waechter, Zhong Shou Huang

Proceedings Volume 3032, (1997) https://doi.org/10.1117/12.273974

KEYWORDS: Sensors, X-rays, X-ray imaging, Electrodes, Direct methods, Imaging systems, Radiography, Selenium, Photoresistors, Fluoroscopy

Read Abstract +

Showing 5 of 15 publications

Conference Committee Involvement (1)

Noise in Devices and Circuits

2 June 2003 | Santa Fe, New Mexico, United States

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement