This invention is directed to techniques for obtaining and imaging three-dimensional objects using radiation in the terahertz (THz) spectrum and systems and associated methods for high resolution terahertz computed tomography. Although computed tomography is well known in X-ray radiographic imaging, a serious problem in reconstructing an image using THz computed tomography is that the THz wave does not satisfy the short wave limit as the X-ray satisfies in X-ray computed tomography. Under diffraction mode, the system creates a modulated optical pulse used to construct a three-dimensional image.The computed tomography method creates a series of images for a three-dimensional object by transmitting pulsed, focused terahertz radiation through an object at different angles.

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Natasha Sanford