Titel: Absolute distance interferometer in LaserTracer geometry
Autoren: Meiners-Hagen, Karl
Doloca, Nicolae Radu
Pollinger, Florian, ISNI: 0000 0000 5585 1452
Wendt, Klaus
Härtig, Frank
Beitragende: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Seiten:9
Sprache:en
DOI:10.7795/810.20130620A
Art der Ressource: Text / Report
Herausgeber: Physikalisch-Technische Bundesanstalt (PTB)
Daten: Verfügbar: 2013
Veröffentlicht: 2013-08
Klassifikationen: PACS 07.60.Ly ; PACS 06.30.Bp ; PACS 06.20.-f ; PACS 42.62.Eh
Datei: Datei herunterladen (application/pdf) 1.03 MB (1080727 Bytes)
MD5 Prüfsumme: 36fa4e8c4d59415e840e004987fabe32
SHA256 Prüfsumme: e6ab320d204ed2f0cf9a75700f887f044f5f64a8a8887b27413604101d113307
Schlagworte: absolute interferometry ; coordinate measuring ; laser tracer
Zusammenfassung: An absolute distance interferometer based on a hybrid measurement technique was developed with the goal to achieve optimum performance in a LaserTracer. The challenges lie in the compact dimensions as very limited space is available and in the special design of the LaserTracer with a steel sphere as an interferometer reflector. To enable accurate absolute distance measurements three diode lasers are used, two permanently stabilized to D1 and D2 absorption lines of potassium at wavelengths of 770.1 nm and 766.7 nm. These are used for a two-colour measurement with the resulting synthetic wavelength of 174 μm. The third laser is modulated and used for variable synthetic wavelength interferometry. Its measurement is used to unwrap the more accurate two-colour measurement. First results of this set-up in the laser tracer geometry up to 2.3 m length are presented, providing insight into the performance of this measurement principle in 3 D.
Anderes: article based on oral presentation at the conference MacroScale 2011 "Recent developments in traceable dimensional measurements", Bern-Wabern (Switzerland), 04-06, October, 2011
Zitierform: MEINERS-HAGEN, Karl, Nicolae R. DOLOCA, Florian POLLINGER, Klaus WENDT and Frank HÄRTIG. Absolute distance interferometer in LaserTracer Geometry. Physikalisch-Technische Bundesanstalt (PTB), 2013. doi: 10.7795/810.20130620A
Bemerkung: article based on oral presentation at the conference MacroScale 2011 "Recent developments in traceable dimensional measurements", Bern-Wabern (Switzerland), 04-06, October, 2011