12-15 July 2011
Saint George Hotel
Africa/Johannesburg timezone

Phase calibration of the Shack-Hartmann wavefront sensor using a phase-only spatial light modulator

14 Jul 2011, 12:00


Oral Presentation Track C - Lasers, Optics and Spectroscopy LOS


Mr Cosmas Mafusire (CSIR National Laser Centre)


The phase measurements of a Shack-Hartmann wavefront sensor are calibrated. The process involves creating holograms of known amounts of individual phase aberrations on a spatial light modulator and reflects an aberration free laser beam off of the modulator’s liquid crystal display thereby giving the beam that aberration. The beam is then relayed onto the sensor for direct measurement. The results show that the method is accurate to the extent that the results accurately replicate the response of the wavelength calibration of the spatial light modulator.

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)? Yes
Level (Hons, MSc, <br> &nbsp; PhD, other)? PhD
Consider for a student <br> &nbsp; award (Yes / No)? Yes

Primary author

Mr Cosmas Mafusire (CSIR National Laser Centre)


Prof. Andrew Forbes (CSIR National Laser Centre)

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