Friday, July 31, 2015

Outline


  • Title Slide
  • Summary
    • What is going to be discussed in the presentation
  • Basics of wavefront sensing
    • what a wavefront is,
    • Purpose of what I am doing
  • What is an optical differentiation sensor
    • diagram and explanation
    • prototype
  • Comparison between OD and Shack-Hartmann sensor
    • OD has better dynamic range, can look at polychromatic sources
    • Important to make sure quality of image is the same
  • Explanation of Signal to Noise Ratio
    • Important to compare different sensors
    • Shows how much of original image is preserved
  • Equation for the SNR of OD and SH sensor
    • From paper by Oti
    • Explanation of terms
    • Derivation
  • Numerical calculation of SNR of both sensors
    • Estimation for number of photons and ensemble average
    • Actual calculation
  • Analysis of numerical calculation
    • Oti Graph
    • Difference in Airy rings
  • Atmospheric turbulence term for Shack-Hartmann sensor
    • Graph and explanation
  • Centroid error term for Shack-Hartmann sensor
    • Graph and Explanation
  • Larger project and Deformable mirror
    • To develop a sensor to compete with the Shack-Hartmann
  • SNR of camera for broadband
    • graphs and analysis
  • SNR of camera for lasers
    • graphs and analysis
  • Different way of calculating SNR
    • graphs and analysis
  • Blur and mean functions
    • code and results
  • Analysis of camera SNRs
  • Conclusion    

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