At room temperature, high-responsivity charge-coupled devices (CCD) comprising arrays of several thousand linear photodiodes are readily available. These sensors are capable of ultraviolet to near infrared wavelengths sensing with detecting resolutions of up to 24 dots per millimeter. Their applicability in novel spectrometry applications has been demonstrated. However, the complexity of their timing, image acquisition, and processing necessitates sophisticated peripheral circuitry for viable output. In this chapter, we outline the application specifications for a versatile spectrometer that is reliant on a field programmable gate array (FPGA) automation. The sustained throughput is 1.23 gigabit per second 8-bit color readout rate. This approach is attractive because the final FPGA design may be reconfigured readily to a single, branded, application-specific integrated circuit (ASIC) to drive a wider range of linear CCDs on the market. This is advantageous for rapid development and deployment of the spectrometer instrument.
Part of the book: Advances in Photodetectors