1. FPGA based demodulation of laser induced fluorescence in plasmas
- Author
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Mattingly, Sean and Skiff, Fred
- Subjects
Physics - Instrumentation and Detectors ,Physics - Plasma Physics - Abstract
We present a field programmable gate array (FPGA)-based system that counts photons from laser-induced fluorescence (LIF) on a laboratory plasma. This is accomplished with FPGA-based up/down counters that demodulate the data, giving a background-subtracted LIF signal stream that is updated with a new point as each laser amplitude modulation cycle completes. We demonstrate using the FPGA to modulate a laser at 1 MHz and demodulate the resulting LIF data stream. This data stream is used to calculate an LIF-based measurement sampled at 1 MHz of a plasma ion fluctuation spectrum., Comment: Published in Review of Scientific Instruments. Final submitted version
- Published
- 2018
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