Sub-picowatt precision radiometry using superconducting transition edge sensor bolometers

Citation
Ja. Chervenak et al., Sub-picowatt precision radiometry using superconducting transition edge sensor bolometers, IEEE APPL S, 11(1), 2001, pp. 593-596
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
10518223 → ACNP
Volume
11
Issue
1
Year of publication
2001
Part
1
Pages
593 - 596
Database
ISI
SICI code
1051-8223(200103)11:1<593:SPRUST>2.0.ZU;2-2
Abstract
We describe a cryogenic radiometric calibration system suitable for high se nsitivity, low background power bolometers, The system uses a variable temp erature blackbody source capable of temperatures of 4 to 20 K, whose output covers the sub-millimeter wavelength regime. The detector is an eight-chan nel, filled-focal-plane array of superconducting transition edge sensor (TE S) bolometers, The system is designed to test components of the optical sys tem such as polarizers, filters and stray light suppressors as well as the performance of the detector array elements, The bolometer response to incid ent submillimeter radiation is measured and compared to the calculated outp ut of the source seen by the bolometer.