A digital lock‐in detection technique which overcomes some practical limitations of the analog lock‐in amplifiers is described. An example of implementation is given, based on multichannel pulse analyzers. Some representative results are reported for two typical application fields of lock‐in techniques, namely optical spectrometry and semiconductor profiling with C–V techniques. Advantages and limitation of the technique are discussed as well as adaptation to various modulation waveforms.
Versatile Digital Lock-in Detection Technique: Application to Spectrofluorometry and Other Fields
COVA, SERGIO;LONGONI, ANTONIO FRANCESCO;
1979-01-01
Abstract
A digital lock‐in detection technique which overcomes some practical limitations of the analog lock‐in amplifiers is described. An example of implementation is given, based on multichannel pulse analyzers. Some representative results are reported for two typical application fields of lock‐in techniques, namely optical spectrometry and semiconductor profiling with C–V techniques. Advantages and limitation of the technique are discussed as well as adaptation to various modulation waveforms.File in questo prodotto:
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