215 citations · 591 across the 16 of their papers we have counts for
16 papers
Lumped-Element Model of THz HEB Mixer Based on Sputtered MgB2 Thin Film
Changyun Yoo, Changsub Kim, Daniel P. Cunnane +1
We present a comprehensive analysis and experimental study of THz hot-electron bolometer (HEB) mixers made from 40-nm-thick sputtered magnesium diboride (MgB2) thin films on high-r…
THz Metal-Mesh Bandpass Filters with Diamond-shaped Apertures for Sensitive THz Receivers
Changyun Yoo, Jeffrey L. Hesler, Boris S. Karasik
We present high-performance terahertz (THz) metal-mesh bandpass filters developed to mitigate direct detection effects in sensitive THz receivers based on superconducting hot-elect…
Demonstration of a Tunable Antenna-Coupled Intersubband Terahertz (TACIT) Mixer
Changyun Yoo, Mengchen Huang, Jonathan Kawamura +4
A fast, voltage-tunable terahertz mixer based on the intersubband transition of a high-mobility 2-dimensional electron gas (2DEG) has been fabricated from a single 40 nm GaAs-AlGaA…
Room Temperature, Quantum-Limited THz Heterodyne Detection? Not Yet
J. Zmuidzinas, B. Karasik, A. R. Kerr +1
In their article, Wang et al. [1] report a new scheme for THz heterodyne detection using a laser-driven LTG-GaAs photomixer [2, 3] and make the impressive claim of achieving near q…
Normal Metal Hot-Electron Nanobolometer with Johnson Noise Thermometry Readout
Boris S. Karasik, Christopher B. McKitterick, Theodore J. Reck +1
The sensitivity of a THz hot-electron nanobolometer (nano-HEB) made from a normal metal is analyzed. Johnson Noise Thermometry (JNT) is employed as a readout technique. In contrast…
Tunable Antenna Coupled Intersubband Terahertz Detector
Nutan Gautam, Jonathan Kawamura, Nacer Chahat +5
We report on the development of a tunable antenna coupled intersubband terahertz (TACIT) detector based on GaAs/AlGaAs two dimensional electron gas. A successful device design and…
Monolayer graphene bolometer as a sensitive far-IR detector
Boris S. Karasik, Christopher B. McKitterick, Daniel E. Prober
In this paper we give a detailed analysis of the expected sensitivity and operating conditions in the power detection mode of a hot-electron bolometer (HEB) made from a few μm…
Prospective performance of graphene HEB for ultrasensitive detection of sub-mm radiation
Boris S. Karasik, Christopher B. McKitterick, Daniel E. Prober
Noise Equivalent Power and time constant of a submillimeter wave Hot-Electron Bolometer (HEB) made from monolayer graphene are analyzed using the lowest electron-phonon thermal con…
Graphene microbolometers with superconducting contacts for terahertz photon detection
Christopher B. McKitterick, Heli Vora, Xu Du +2
We report on noise and thermal conductance measurements taken in order to determine an upper bound on the performance of graphene as a terahertz photon detector. The main mechanism…
Performance of Graphene Thermal Photon Detectors
Chris B. McKitterick, Daniel E. Prober, Boris S. Karasik
We analyze the performance of graphene microstructures as thermal photon detectors and deduce the range of parameters that define a linear response. The saturation effects of a gra…
Nanobolometers for THz Photon Detection
Boris S. Karasik, Andrei V. Sergeev, Daniel E. Prober
This article reviews the state of rapidly emerging terahertz hot-electron nanobolometers (nano-HEB), which are currently among of the most sensitive radiation power detectors at su…
Energy-resolved detection of single infrared photons with λ = 8 μm using a superconducting microbolometer
Boris S. Karasik, Sergey V. Pereverzev, Alexander Soibel +4
We report on the detection of single photons with λ = 8 μm using a superconducting hot-electron microbolometer. The sensing element is a titanium transition-edge sensor with a volu…
Optical NEP in Hot-Electron Nanobolometers
Boris S. Karasik, Robin Cantor
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 2μmx1μmx…
Energy resolution of terahertz single-photon-sensitive bolometric detectors
D. F. Santavicca, B. Reulet, B. S. Karasik +5
We report measurements of the energy resolution of ultra-sensitive superconducting bolometric detectors. The device is a superconducting titanium nanobridge with niobium contacts.…
Ultra-Sensitive Hot-Electron Nanobolometers for Terahertz Astrophysics
Jian Wei, David Olaya, Boris Karasik +3
The background-limited spectral imaging of the early Universe requires spaceborne terahertz (THz) detectors with the sensitivity 2-3 orders of magnitude better than that of the sta…
Millisecond Electron-Phonon Relaxation in Ultrathin Disordered Metal Films at Millikelvin Temperatures
M. E. Gershenson, D. Gong, T. Sato +2
We have measured directly the thermal conductance between electrons and phonons in ultra-thin Hf and Ti films at millikelvin temperatures. The experimental data indicate that elect…