Title :
Sub-picowatt precision radiometry using superconducting transition edge sensor bolometers
Author :
Chervenak, J.A. ; Grossman, E.N. ; Reintsema, C.D. ; Irwin, K.D. ; Moseley, S.H. ; Allen, C.A.
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt, MD, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
We describe a cryogenic radiometric calibration system suitable for high sensitivity, low background power bolometers. The system uses a variable temperature blackbody source capable of temperatures of 4 to 20 K, whose output covers the sub-millimeter wavelength regime. The detector is an eight-channel, filled-focal-plane array of superconducting transition edge sensor (TES) bolometers. The system is designed to test components of the optical system such as polarizers, filters and stray light suppressors as well as the performance of the detector array elements. The bolometer response to incident submillimeter radiation is measured and compared to the calculated output of the source seen by the bolometer
Keywords :
bolometers; radiometry; superconducting devices; detector array elements; filled-focal-plane array; filters; high sensitivity low background power bolometers; incident submillimeter radiation; polarizers; stray light suppressors; sub-millimeter wavelength regime; sub-picowatt precision radiometry; superconducting transition edge sensor bolometers; variable temperature blackbody source; Bolometers; Calibration; Cryogenics; Detectors; Optical arrays; Optical filters; Radiometry; Sensor arrays; Superconducting filters; Temperature sensors;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
