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Optical Demonstration of THz, Dual-Polarization Sensitive Microwave Kinetic Inductance Detectors.
- Source :
-
Journal of Low Temperature Physics . Jul2016, Vol. 184 Issue 1/2, p173-179. 7p. - Publication Year :
- 2016
-
Abstract
- Polarization sensitive, microwave kinetic inductance detectors (MKIDs) are under development for the next generation BLAST instrument (BLAST-TNG). BLAST-TNG is a balloon-borne submillimeter polarimeter designed to study magnetic fields in diffuse dust regions and molecular clouds. We present the design and performance of feedhorn-coupled, dual-polarization sensitive MKIDs fabricated from TiN/Ti multilayer films, which have been optimized for the 250 $$\upmu $$ m band. Measurements show effective selection of linear polarization and good electrical isolation between the orthogonally crossed X and Y detectors within a single spatial pixel. The detector cross-polar coupling is $$<$$ 3 %. Passband measurements are presented, which demonstrate that the desired band-edges (1.0-1.4 THz) have been achieved. We find a near linear response to the optical load from a blackbody source, which has been observed in previous devices fabricated from TiN. Blackbody-coupled noise measurements demonstrate that the sensitivity of the detectors is limited by photon noise when the optical load is greater than 1 pW. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222291
- Volume :
- 184
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Low Temperature Physics
- Publication Type :
- Academic Journal
- Accession number :
- 115657503
- Full Text :
- https://doi.org/10.1007/s10909-015-1434-3