16 May 2003 PSF measurements on back-illuminated CCDs
Author Affiliations +
The spatial resolution of an optical device is generally characterized by either the Point Spread Function (PSF) or the Modulation Transfer Function (MTF). To directly obtain the PSF one needs to measure the response of an optical system to a point light source. We present data that show the response of a back-illuminated CCD to light emitted from a sub-micron diameter glass fiber tip. The potential well in back-illuminated CCD’s does not reach all the way to the back surface. Hence, light that is absorbed in the field-free region generates electrons that can diffuse into other pixels. We analyzed the diffusion of electrons into neighboring pixels for different wavelengths of light ranging from blue to near infrared. To find out how the charge spreading into other pixels depends on the location of the light spot, the fiber tip could be moved with a piezo-electric translation stage. The experimental data are compared to Monte Carlo simulations and an analytical model of electron diffusion in the field-free region.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ralf Widenhorn, Ralf Widenhorn, Alexander Weber, Alexander Weber, Morley M. Blouke, Morley M. Blouke, Albert J. Bae, Albert J. Bae, Erik Bodegom, Erik Bodegom, } "PSF measurements on back-illuminated CCDs", Proc. SPIE 5017, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications IV, (16 May 2003); doi: 10.1117/12.482797; https://doi.org/10.1117/12.482797


MTF and PSF measurements of the CCD273 84 detector for...
Proceedings of SPIE (August 27 2014)
DQE simulation of a-Se x-ray detectors using ARTEMIS
Proceedings of SPIE (March 21 2016)
Temperature dependence of dark current in a CCD
Proceedings of SPIE (April 23 2002)
Gaia astrometric CCDs and focal plane
Proceedings of SPIE (August 25 2005)
High-speed, low-noise, fine-resolution TDI CCD imagers
Proceedings of SPIE (June 30 1990)

Back to Top