Two-wavelength double heterodyne interferometry using a matched grating technique

Two-wavelength double heterodyne interferometry is applied for topographic measurements on optically rough target surfaces. A two-wavelength He-Ne laser and a matched grating technique are used to improve system stability and to simplify heterodyne frequency generation.

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Bibliographische Detailangaben
Veröffentlicht in:	Applied Optics 1991-08, Vol.30 (22), p.3139-3144
Hauptverfasser:	SODNIK, Z, FISCHER, E, ITTNER, T, TIZIANI, H. J
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Instruments, apparatus, components and techniques common to several branches of physics and astronomy Interferometers Optical instruments, equipment and techniques Physics
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Two-wavelength double heterodyne interferometry is applied for topographic measurements on optically rough target surfaces. A two-wavelength He-Ne laser and a matched grating technique are used to improve system stability and to simplify heterodyne frequency generation.
ISSN:	0003-6935 1559-128X 1539-4522
DOI:	10.1364/AO.30.003139