Light-Field Methods for Terahertz Imaging (T-Field)

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The promising applications of terahertz are driving the modern research towards the development of practical and low-cost terahertz imaging systems. Very recently, fully integrated terahertz imaging chip-sets have become a possibility owing to the developments in silicon process technologies. However, terahertz direct detector focal-plane-arrays (FPAs) have limited imaging applications because of the lack of phase information. Recently, researchers have started to use light-field techniques in visible light incoherent imaging for dynamic viewpoint generation. The overall objective of T-Field is to investigate and develop the light-field imaging capabilities for terahertz radiation. In this first of its kind research, we use the lens integrated 1k-pixel CMOS direct detector FPA to discern the directional information from incoming terahertz radiation. We synthesize research in electro-magnetics, optics, computer vision and image and signal processing to design T-Field instrumentation hardware and computational framework from the ground up, leading to the world's first terahertz light-field camera array.