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Principles of Lock-in Detection and the-State-of the-Art

Author: Zurich Instruments
Wednesday, March 01, 2017
Understanding the basic working principles of lock-in amplifiers is key to working effectively in many of today’s photonics labs, where signal modulation imposed by pulsed lasers, AOMs, EOMs, optical choppers and other devices is ubiquitous. The precise and sensitive measurement of amplitude and phase information in your signal is what lock-in amplifiers are made for. Read this paper to understand the most important measurement settings and detection techniques in the time and frequency domains, and draw some inspiration from the latest developments for your own experimental challenges.
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File: principles_of_lock_in_detection.pdf (1.46 MB)
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Test & Measurementindustriallock-in amplifiermeasurement techniquesignal amplitudesignal phaseoscillatorperiodic signalelectrical signalsignal-to-noise ratiohigh-frequency rangeultra-high-frequency rangeoptical chopperphase-locked loopboxcar averagerdigitizer
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