1 March 1994 Noise-modulated laser diode interferometer and its application to range finding
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Abstract
Theory, experimental performance, and application of the noise-modulated interferometer are presented. This novel two-beam interferometer applies (1st) a laser diode source that is stochastically modulated in its frequency and (2nd) a common photodetector in the output arm followed by an averaging frequency counter. It is demonstrated that homodyne detecting of the two interferometer beams and counting the averaged beat frequency can be understood as a correlation process. By applying Horton's Anticorrelation' function to the signal processing channel of the noise-modulated interferometer, the range R <EQ 2 m of reflecting target is determined with high precision.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wolfgang Holzapfel, Werner Baetz, Jan Christian Braasch, "Noise-modulated laser diode interferometer and its application to range finding", Proc. SPIE 2004, Interferometry VI: Applications, (1 March 1994); doi: 10.1117/12.172582; https://doi.org/10.1117/12.172582
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