Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30172
Signal-to-Noise Ratio Improvement of EMCCD Cameras

Authors: Wen W. Zhang, Qian Chen, Bei B. Zhou, Wei J. He

Abstract:

Over the past years, the EMCCD has had a profound influence on photon starved imaging applications relying on its unique multiplication register based on the impact ionization effect in the silicon. High signal-to-noise ratio (SNR) means high image quality. Thus, SNR improvement is important for the EMCCD. This work analyzes the SNR performance of an EMCCD with gain off and on. In each mode, simplified SNR models are established for different integration times. The SNR curves are divided into readout noise (or CIC) region and shot noise region by integration time. Theoretical SNR values comparing long frame integration and frame adding in each region are presented and discussed to figure out which method is more effective. In order to further improve the SNR performance, pixel binning is introduced into the EMCCD. The results show that pixel binning does obviously improve the SNR performance, but at the expensive of the spatial resolution.

Keywords: EMCCD, SNR improvement, pixel binning

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1059585

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2413

References:


[1] A. O-Grady, "A comparison of EMCCD, CCD and emerging technologies optimized for low light spectroscopy applications" , in Proc. SPIE Biomedical Vibrational Spectroscopy III: Advances in Research and Industry, 2006, pp. 60930S1-9.
[2] P. JERRAM, P. POOL, R. BELL, et al.. "The LLLCCD: low -light imaging without the need for an intensifier," in Proc. SPIE Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications II, 2001, vol. 4306, pp. 178-186.
[3] Digital Camera Fundamentals. Andor Technology. http://www.andor.com/pdfs/Digital%20Camera%20Fundamentals.pdf
[4] P. A. Jerram, P. J. Pool, D. J. Burt, et al., "Electron Multiplying CCDs", in Proc. SNIC Symposium , 2006, pp. 1-6.
[5] P. J. Pool, D. G. Morris, D. J. Burt, R. T. Bell, A. D. Holland, et al., "Application of electron multiplying CCD technology in space instrumentation", in Proc. SPIE Focal Plane Arrays for Space Telescopes II, 2005, pp. 59020A1-6.
[6] N. Smith, C. Coates, A. Giltinan, J. Howard, A. O'Connor, et al., "EMCCD Technology and its Impact on Rapid Low-Light Photometry", in Proc. SPIE Optical and Infrared Detectors for Astronomy, 2004, pp. 162-172.
[7] S. Tulloch, "Modelling the suitability of EMCCDs for spectroscopic applications", in Proc. SPIE High Energy, Optical, and Infrared Detectors for Astronomy III Marseille, 2008, pp. 70212C1-10.
[8] T. C. Soesbe, M.A. Lewis, E. Richer, et al., "Development and Evaluation of an EMCCD Based Gamma Camera for Preclinical SPECT Imaging", IEEE Trans. Nuclear Science, vol. 50, pp. 1227-1232, May. 2003.
[9] Wen W. Zhang, Qian Chen. Optimum Signal-to-noise Ratio Performance of Electron Multiplying Charge Coupled Devices. World Academy of Science, Engineering and Technology, vol. 54, pp. 264-268, June. 2009.
[10] Pixel Binning. http://www.ccd.com/ccd103.html