A spatial light modulator used to pattern a radiation beam comprises an array of pixels disposed on a support. Each pixel has a light modulating element for modulating the radiation beam and a control circuit that positions the light modulating elements according to a desired pattern. The control circuit is disposed on the opposite side of the support than the light modulating elements. The control circuit comprises at least one of a digital to analog converter, an analog to digital converter, an optical fiber input, and a processor.