InGaAs detector can be used as the image sensor in SWIR (Shortwave Infrared) band as. Cameras with InGaAs detector have been widely used in the astronomical observation field. Based on the optical band CCD camera readout technologies that we have mastered, this paper introduced one China domestic InGaAs detector, and proposed this camera readout system with it, which includes the whole circuits structure, pixel transferring timing and image acquisition method. We summarized these technologies, presented the appropriate solutions and the simulation results as well. These works provide technical support to develop infrared scientific camera
We conducted detailed in-lab tests on Balor 17F sCMOS camera, the latest model of Andor, for its performances, including gain, quantum efficiency, linearity, read noise, dark current, etc. We also evaluated the camera in terms of functionality considering the needs of astronomical observation. According to the tests, the camera’s performance is consistent with the official specifications, and to use the camera properly, liquid cooling is mandatory. The dark current in different areas of the sensor varies greatly. We also find that the sensor has a strong response at the short end of optical band. There are still some controversial issues in the camera to be further explained.
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