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What is heterodyne mixing? 


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Heterodyne mixing is a technique used in spectral measurement systems to improve the accuracy of wavelength measurements by reducing the influence of environmental factors on the measured spectrum . It involves the mixing of two signals, a target signal and a reference signal, to produce an intermediate frequency electrical signal . This mixing process preserves the spectral content of the target signal within the intermediate frequency bandwidth . Heterodyne mixing can be used in various applications, such as high-frequency acoustic spectroscopy measurements and terahertz radiation detection . It allows for the measurement and analysis of high-frequency signals that are inaccessible to conventional methods . Both mixing and beating of the target and reference signals are important in heterodyne signal generation .

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Heterodyne mixing is the process of combining two different frequencies of electromagnetic waves or acoustic waves to generate an intermediate frequency signal.
Heterodyne mixing is a technique used in the proposed high precision spectral measurement system to reduce the influence of environmental factors on stimulated Brillouin scattering effect and improve wavelength accuracy.
Heterodyne mixing is a technique used in the proposed high precision spectral measurement system to reduce the influence of environmental factors on stimulated Brillouin scattering effect and improve wavelength accuracy.
Heterodyne mixing is not explicitly mentioned in the provided paper.

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