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Dr. Gang Wang
Department of Physics
Indiana University – Purdue University Fort Wayne
We present our preliminary result for the experiment to actively correct the wavefront of a laser used in an optical tweezers set-up. This was done by converting a desired pattern into a phase modulation that a spatial light modulator can display. We developed program to calculate the phase modulation and interface with the SLM. An SLM is a device that allows for manipulation of pixels to create a custom lens. A laser reflects off of this SLM and its diffraction pattern will be actively monitored with a high speed camera. The camera allows us to dynamically change the displayed image on the SLM so that the resulting diffraction pattern matches that of our desired pattern. This means that the camera could actively monitor and correct for any aberrations that come about from our set-up and we will report our progress on this active correction.
Physical Sciences and Mathematics | Physics
Overby, Zachary, "Active Wavefront Correction" (2015). 2015 IPFW Student Research and Creative Endeavor Symposium. 78.