Searching water megamasers by using mid-infrared spectroscopy (I): Possible mid-infrared indicators [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Water megamasers at 22 GHz with a gas disc configuration in galaxies provide the most precise measurements of supermassive black hole masses, as well as independent constraints on the Hubble constant in the nearby universe. The existence of other maser types, such as jet or outflow masers, represents another tracer for AGN ...
Man I Lam +5 more
openaire +3 more sources
Mid-infrared Selection of Active Galactic Nuclei with the Wide-Field Infrared Survey Explorer. I. Characterizing WISE-selected Active Galactic Nuclei in COSMOS [PDF]
, 2012 The Wide-field Infrared Survey Explorer (WISE) is an extremely capable and efficient black hole finder. We present a simple mid-infrared color criterion, W1 – W2 ≥ 0.8 (i.e., [3.4]–[4.6] ≥0.8, Vega), which identifies 61.9 ± 5.4 active galactic nucleus ...
Assef, Roberto J. +17 more
core +1 more source
Mid-infrared nonlinear silicon photonics [PDF]
SPIE Proceedings, 2014 Recently there has been a growing interest in mid-infrared (mid-IR) photonic technology with a wavelength of operation approximately from 2-14 μm. Among several established mid-IR photonic platforms, silicon nanophotonic platform could potentially offer ultra-compact, and monolithically integrated mid-IR photonic devices and device arrays, which could ...
Liu, Xiaoping +5 more
openaire +2 more sources
Comparative Modeling of Infrared Fiber Lasers
Photonics, 2018 The modeling and design of fiber lasers facilitate the process of their practical realization. Of particular interest during the last few years is the development of lanthanide ion-doped fiber lasers that operate at wavelengths exceeding 2000 nm.
Slawomir Sujecki +10 more
doaj +1 more source
Benchmarking the Use of Heavily-Doped Ge Against Noble Metals for Plasmonics and Sensing in the Mid-Infrared [PDF]
, 2016 Despite the recent introduction of heavily-doped semiconductors for mid-infrared plasmonics, it still remains an open point whether such materials can compete with noble metals.
Baldassarre, Leonetta +8 more
core +1 more source
Mid-Infrared Waveguides: A Perspective [PDF]
Applied Spectroscopy, 2016 Significant advancements in waveguide technology in the mid-infrared (MIR) regime during recent decades have assisted in establishing MIR spectroscopic and sensing technologies as a routine tool among nondestructive analytical methods. In this review, the evolution of MIR waveguides along with state-of-the-art technologies facilitating next-generation
Thomas Schädle, Boris Mizaikoff
openaire +2 more sources
Sensores ópticos com detecção no infravermelho próximo e médio Near and mid infrared optical sensors
Química Nova, 2009 Optical chemical sensors with detection in the near and mid infrared region are reviewed. Fundamental concepts of infrared spectroscopy and optical chemical sensors are briefly described, before presenting some aspects on optical chemical sensors, such ...
Kássio M. G. Lima +3 more
doaj +1 more source
Coupled surface plasmon–phonon polariton nanocavity arrays for enhanced mid-infrared absorption
Nanophotonics, 2022 Resonant optical cavities are essential components in mid-infrared applications. However, typical film-type cavities require multilayer stacks with a micron-thick spacer due to mid-infrared wavelengths, and their performance is limited by narrow ...
Kachiraju Satya R. +6 more
doaj +1 more source
The Mid-Infrared Emission of M87 [PDF]
, 2007 We discuss Subaru and Spitzer Space Telescope imaging and spectroscopy of M87 in the mid-infrared from 5-35 um. These observations allow us to investigate mid-IR emission mechanisms in the core of M87 and to establish that the flaring, variable jet ...
Antonucci R. R. J. +17 more
core +4 more sources
Air temperature drives the evolution of mid-infrared optical properties of butterfly wings
Scientific Reports, 2021 This study uncovers a correlation between the mid-infrared emissivity of butterfly wings and the average air temperature of their habitats across the world.
Anirudh Krishna +3 more
doaj +1 more source