| Zugriffsnummer | 18396 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Measurement of the absorptance of a cryogenic radiometer cavity in the visible and near infrared (NIR) [poster] |
| Autor(in); Institution |
López Ordonez, Marco Antonio; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig; Centro Nacional de Metrologia, Querétaro, MEXICO
Hofer, Helmuth; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
Kück, Stefan; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
|
| Quelle/Jahr | Proceedings of the 9th International Conference on New Developments and Applications in Optical Radiometry:(2005), 25 - 26 |
| Herausgeber(in) |
Gröbner, Julian
|
| ISBN | 3-033-00570-5 ; 978-3-033-00570-9 |
| URL | |
| Verlag | Davos: WRC PMOD |
| Konferenzangaben | 9th International Conference on New Developments and Applications in Optical Radiometry (NEWRAD 2005), Davos, 17-19, October, 2005, Switzerland |
| Freie Schlagworte | Cryogenic Radiometer ; Absorptance |
| Zusammenfassung | Results of the measurement of the absorptance of a LaseRad cavity used as an absorber in the cryogenic radiometer in the Physikalisch-Technische Bundesanstalt (PTB) are presented. The measurements were carried out at several laser wavelengths in the visible and near infrared (NIR); at 633 nm, 1280 nm - 1360 nm and 1480 nm - 1620 nm. The absorptance of 0.999885 ± 3.0×10-6 measured at 633 nm matches very well with the value of 0.999879 ± 1.0×10-5 reported by the manufacturer (Cambridge Research & Instrumentation, Inc.) . In the NIR the absorptance is approx. 1.1×10-4 ± 3×10-6 lower than at 633 nm, which is significant for high accuracy measurements. In the wavelength range from 1280 nm to 1620 nm, the absorptance varies by 19×10-6 which is almost negligible for this wavelength range. |
Zitierung
López Ordonez, M. A., Hofer, H., & Kück, S. (2005). Measurement of the absorptance of a cryogenic radiometer cavity in the visible and near infrared (NIR) [poster]. 9th International Conference on New Developments and Applications in Optical Radiometry (NEWRAD 2005), Davos, 17-19, October, 2005, Switzerland.