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Heterodyne detection of small angle scattered far‐infrared laser radiation
Author(s) -
Jacobsson Stellan,
Hård Sverker
Publication year - 1988
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650010714
Subject(s) - optics , heterodyne detection , heterodyne (poetry) , scattering , radiation , detector , laser , physics , electromagnetic radiation , infrared , far infrared , forward scatter , materials science , acoustics
A heterodyne detection scheme for far‐infrared small angle scattered laser radiation is reported and demonstrated by measuring the known scattering from a thin wire scatterer. Frequency shifts were on the order of 10 Hz. A Golay cell was used as a detector. The results were compared with theoretical predictions and direct detection data. The method should be useful for scattering measurements of density waves in plasmas.