Luminit LLC — Department of Defense SBIR Phase I: N181-011

Description

To meet the Navy need for a Diffractive Optical Element (DOE) for laser beam homogenization at spectral window from 0.9 m to 6 m, Luminit, LLC, proposes to develop the Uniform Diffuser Composed of Cascaded CGHs (UNIC). UNIC, will be composed of several DOEs in a form of Computer Generated Holograms, designed digitally and arranged in a stacked setup with separation distance less than a millimeter. Thus, the cascaded CGHs can use free space propagation between these elements to handle the large spectral width and can exhibit a superior performance in uniformizing input beam, regardless of the beams starting spatial configuration. In Phase I, a single diffractive CGH will be demonstrated and spectral dependence will be investigated further. In Phase II, we will fabricate and demonstrate the UNIC system with 3 or 4 elements for the desired parameters for the agency. Thus, after completion, we believe that UNIC will provide innovative solutions to the beam homogenizers of the next generation.