High performance visible and near-infrared charge-coupled-device array for spectroscopy applications

Computer Science – Performance

Scientific paper

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Charge Coupled Devices, Imaging Spectrometers, Infrared Spectroscopy, Noise Spectra, Optical Measuring Instruments, Quantum Efficiency, Space Shuttle Payloads, Analog To Digital Converters, Charge Transfer, Electric Current, Metal Oxide Semiconductors, Modulation Transfer Function, Pixels

Scientific paper

This paper describes the design and performance of a scientific CCD array for use in NASA's Shuttle Image Spectrometer Experiment. The device is a four-phase, buried-channel CCD structure that operates in the frame-transfer mode. The sensor consists of 64 x 404 pixels, has a 100 percent fill factor, and operates in the visible and near-infrared spectral regions. In operation, the 404 horizontal elements provide spatial information, while the 64 vertical elements give spectral information covering the wavelength range of 400 to 1000 nm in 10 nm increments. The high full-well capacity of each pixel and low noise floor yield a dynamic range of more than 95 dB. In addition, the device has been designed to have good linearity characteristics. The unique dual-output structure allows a horizontal row to be read out to the right or to the left, or it can be split from the middle to both right and left output circuits simultaneously for high speed applications. The power dissipation of the device is about 60 mW.

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