Abstract
In the past few years the availability of low-cost, high-performance digital configurable devices [digital signal processors (DSP) and field programmable gate arrays (FPGAs) above all] has extended the application of digital signal processing to a larger field of instrumentation. In particular, the phase-sensitive detection (PSD) technique, which is at the heart of lock-in amplifiers, substantially benefits from digital implementation, especially by the use of configurable devices, both in terms of architectural efficiency and achievable performance. In this paper we describe the design and realization of a digital lock-in amplifier devoted to high-performance photon counting applications based on a PSD section implemented in a FPGA device. Among the main features of the proposed digital instrument are reconfigurability, a wide range of operative parameters, very large functional performances, and extremely low cost. The prototype has been experimentally tested and the results fully comply with the goal design specifications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
