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Stimulating multiple neurons simultaneously in brain is an important strategy to study neuronal networks. We propose a novel method to generate three-dimensional stimulating patterns using a Digital Micro-mirror Device (DMD). The DMD is placed in conjugate image plane. The projection pattern on the DMD changes dynamically and synchronized with a pair of galvomirrors in the conjugate plane. The three-dimensional holography is generated by 4-D control of light field (DMD controls x, y, and galvomirrors control k_x,k_y). This novel method is able to generate three-dimensional distributed illumination patterns much faster than the previous methods using Spatial Light Modulators.
Yi Xue
"Three-dimensional partial coherent holography by a digital micro-mirror device (Conference Presentation)", Proc. SPIE 11245, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXVII, 1124508 (9 March 2020); https://doi.org/10.1117/12.2546926
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Yi Xue, "Three-dimensional partial coherent holography by a digital micro-mirror device (Conference Presentation)," Proc. SPIE 11245, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XXVII, 1124508 (9 March 2020); https://doi.org/10.1117/12.2546926