Charge Injection Devices (CIDs) have historically played a niche role in visible imager technologies, mainly for applications requiring high radiation tolerance. They have not exhibited the radiometric performance of competing visible- imaging technologies such as CCDs, and so have not been widely applied to space instrument systems. Recent advances in CIDs have demonstrated much higher radiometric performance as well as lower noise operation, without compromising the radiation tolerance of the devices, making the devices suitable for a wide range of space instruments. We present radiometric, noise, and radiation response data for several of the newest CID designs that are candidate technologies for visible space telescope systems.
Studies are reported of an MBE-grown, two-quantum-well structure which uses photon-assisted resonant tunneling
between the two quasi-confined well states to provide a detection current. Bias applied across the device allows for
tuning of the wavelength of the detected light by changing the difference in energy of the two states. Various
charactrization measurements of this structure will be described, and their ramifications will be discussed.
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