Intensity-Based Wavefront Sensing

doi:10.1117/3.179559.ch10

Book: Introduction to Wavefront Sensors

Author(s): Joseph M. Geary

Published: 1995

https://doi.org/10.1117/3.179559.ch10

Author Affiliations +

Abstract

All of the wavefront sensors discussed thus far have involved measurements of either W, dW, or T. The metric was a dimensional value expressed in waves, microns, or millimeters. The amount of light present in the system (expressed in terms of irradiance or intensity) was of little concern as long as there was enough signal. Wavefront sensing schemes will now be investigated where irradiance (or intensity) is the key ingredient of the measurement.