8 May 2012 Real-time video rate imaging with a 1k-pixel THz CMOS focal plane array
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Abstract
Future submillimeter-wave and THz (300GHz-3THz) imaging applications will require low-cost portable systems operating at room-temperature with a video-rate speed and capable of delivering acceptable sensitivity at the very low-power consumption levels to become attractive for truly commercial applications. In particular, CMOS technologies are of interest due to their high integration level offered at a high yield that is capable of massive cost reduction of currently existing THz systems. It has been recently demonstrated that CMOS direct detectors achieve the performance comparable or even superior to the today's existing classical THz devices for active imaging operating at room-temperature. So far, however, only single pixels have been used, allowing only a raster-scan operation. To address this obstacle, we present the very initial work on a 1k-pixel camera chip with a completely integrated readout circuitry and with a full video-rate capability at a power consumption of 2.5μW/pixel. The chip is fully compliant with an industrial bulk CMOS technology and it is intended for active imaging applications. It exhibits a pixel pitch of 80μm, defined by a novel on-chip wire ring antenna, and is designed to accommodate silicon hyper-hemispherical lens for a wide operation bandwidth of at least 0.7-1.1 THz.
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J. Grzyb, J. Grzyb, H. Sherry, H. Sherry, Y. Zhao, Y. Zhao, R. Al Hadi, R. Al Hadi, A. Cathelin, A. Cathelin, A. Kaiser, A. Kaiser, U. Pfeiffer, U. Pfeiffer, } "Real-time video rate imaging with a 1k-pixel THz CMOS focal plane array", Proc. SPIE 8362, Passive and Active Millimeter-Wave Imaging XV, 83620C (8 May 2012); doi: 10.1117/12.919218; https://doi.org/10.1117/12.919218
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