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A Titanium Nitride Absorber for Controlling Optical Crosstalk in Horn-Coupled Aluminum LEKID Arrays for Millimeter Wavelengths
- Publication Year :
- 2015
- Publisher :
- arXiv, 2015.
-
Abstract
- We discuss the design and measured performance of a titanium nitride (TiN) mesh absorber we are developing for controlling optical crosstalk in horn-coupled lumped-element kinetic inductance detector arrays for millimeter-wavelengths. This absorber was added to the fused silica anti-reflection coating attached to previously-characterized, 20-element prototype arrays of LEKIDs fabricated from thin-film aluminum on silicon substrates. To test the TiN crosstalk absorber, we compared the measured response and noise properties of LEKID arrays with and without the TiN mesh. For this test, the LEKIDs were illuminated with an adjustable, incoherent electronic millimeter-wave source. Our measurements show that the optical crosstalk in the LEKID array with the TiN absorber is reduced by 66\% on average, so the approach is effective and a viable candidate for future kilo-pixel arrays.<br />Comment: 7 pages, 5 figures, accepted for publication in the Journal of Low Temperature Physics
- Subjects :
- Materials science
Silicon
chemistry.chemical_element
FOS: Physical sciences
02 engineering and technology
Nitride
engineering.material
01 natural sciences
010309 optics
Coating
Aluminium
0103 physical sciences
General Materials Science
Instrumentation and Methods for Astrophysics (astro-ph.IM)
business.industry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Wavelength
chemistry
engineering
Optoelectronics
Millimeter
0210 nano-technology
Tin
business
Astrophysics - Instrumentation and Methods for Astrophysics
A titanium
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....ddc7a74c686c5b4234fe344139aa8fcb
- Full Text :
- https://doi.org/10.48550/arxiv.1512.01847