@Article{Karasik+Cantor2010,
author="Karasik, Boris S.
and Cantor, Robin",
title="Optical NEP in hot-electron nanobolometers",
year="2010",
pages="1--7",
optkeywords="HEB; Ti; NEP; femtowatt; SAFARI; SPICA; 650 GHz; 0.65 THz; 460 um; twin slot antenna; SQUID readout",
abstract="For the first time, we have measured the optical noise equivalent power (NEP) in titanium (Ti) superconducting hot-electron nanobolometers (nano-HEBs). The bolometers were 2{\{}{\backslash}mu{\}}mx1{\{}{\backslash}mu{\}}mx20nm and 1{\{}{\backslash}mu{\}}mx1{\{}{\backslash}mu{\}}mx20nm planar antenna-coupled devices. The measurements were done at {\{}{\backslash}lambda{\}} = 460 {\{}{\backslash}mu{\}}m using a cryogenic black body radiation source delivering optical power from a fraction of a femtowatt to a few 100s of femtowatts. A record low NEP = 3x10^{\{}-19{\}} W/Hz^{\{}1/2{\}} at 50 mK has been achieved. This sensitivity meets the requirements for SAFARI instrument on the SPICA telescope. The ways for further improvement of the nano-HEB detector sensitivity are discussed.",
optnote="To appear in Proc. 21st Int. Symp. on Spc. THz Technol., Oxford, UK, 23-25 March, 2010",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=623), last updated on Thu, 07 Oct 2010 17:57:27 -0500",
opturl="http://arxiv.org/abs/1009.4676v1",
archivePrefix="arXiv",
eprint="1009.4676v1"
}