| Zugriffsnummer | 24809 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Detector based traceability chain for spectral irradiance using tunable lasers, independent from blackbody radiators |
| Autor(in); Institution |
Abd El Mageed, Alaa Eldin; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
Winter, Stefan; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
Nevas, Saulius; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
Sperfeld, Peter; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
Kück, Stefan; 4.5, Optische Technologien, PTB-Braunschweig
Sperling, Armin; 4.1, Photometrie und angewandte Radiometrie, PTB-Braunschweig
|
| Quelle/Jahr | BulLight 2010, XIV National Conference with International Participation: Proceedings = Bulgarija Svetlina 2010, XIV Nacionalna Konferencija Mezdunarodno Ucastie: Sbornik doklady:(2010), III-3 - III-7 |
| Availability | [Electronic version] |
| ISSN | 1314-0787 |
| Verlag | Varna: Bulgarian National Committee on Illumination (BNCI) |
| Konferenzangaben | BulLight 2010, XIV National Conference with International Participation, Varna, 10-12, June, 2010, Bulgaria |
| Freie Schlagworte | detector-based ; tunable laser ; irradiance ; traceability ; responsivity ; spectroradiometer ; blackbody |
| Zusammenfassung | A new setup for a completely detector-based traceability chain for spectral irradiance calibrations, independent from the high-temperature blackbody radiator, has been built up at the Physikalisch-Technische Bundesanstalt (PTB). At the TUnable Laser In Photometry (TULIP) setup of PTB, a calibrated silicon trap detector, traceable to the primary cryogenic radiometer of PTB, in combination with a well defined aperture is used to determine the spectral irradiance of a uniform monochromatic irradiance field produced by a tunable laser system. With this known uniform irradiance field a spectroradiometer is calibrated with respect to its absolute spectral irradiance responsivity. The calibrated spectroradiometer finally transfers the absolute spectral irradiance value to other standard light sources. At present, irradiance calibrations of lamps in the spectral range between 565 nm and 975 nm were realized with expanded uncertainties lower than 0.8 %. This exclusively detector-based traceability chain for the spectral irradiance calibrations has the potential to reduce the measurement uncertainty compared to the traditional methods, where sources like blackbody radiators and standard lamps are used as intermediate standards. With this calibration chain the two commonly used calibration steps to measure the blackbody temperature using calibrated filter-radiometers are replaced by the single calibration of the responsivity of the spectroradiometer against a trap detector. |
Zitierung
Abd El Mageed, A. E., Winter, S., Nevas, S., Sperfeld, P., Kück, S., & Sperling, A. (2010). Detector based traceability chain for spectral irradiance using tunable lasers, independent from blackbody radiators. BulLight 2010, XIV National Conference with International Participation, Varna, 10-12, June, 2010, Bulgaria.