A5010356327- Stellar, planetary, and galactic studies
- Superconducting and THz Device Technology
- Adaptive optics and wavefront sensing
- Astronomy and Astrophysical Research
- Physics of Superconductivity and Magnetism
- Advanced Frequency and Time Standards
- Astrophysics and Star Formation Studies
- Thermal Radiation and Cooling Technologies
- Quantum Information and Cryptography
- Biomedical and Engineering Education
- Spectroscopy and Laser Applications
- Pulsars and Gravitational Waves Research
- Scientific Computing and Data Management
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Astro and Planetary Science
- Terahertz technology and applications
- Experimental and Theoretical Physics Studies
- Radio Frequency Integrated Circuit Design
- Relativity and Gravitational Theory
- Solar and Space Plasma Dynamics
Lockheed Martin (United States)
2022
University of California, Santa Barbara
2017-2021
Dominican School of Philosophy and Theology
2020
Fermi National Accelerator Laboratory
2020
Jet Propulsion Laboratory
2020
Smith College
2014
We have fabricated and characterized 10,000 20,440 pixel Microwave Kinetic Inductance Detector (MKID) arrays for the Dark-speckle Near-IR Energy-resolved Superconducting Spectrophotometer (DARKNESS) MKID Exoplanet Camera (MEC). These instruments are designed to sit behind adaptive optics systems with goal of directly imaging exoplanets in a 800-1400 nm band. Previous large optical near-IR were using substoichiometric titanium nitride (TiN) on silicon substrate. arrays, however, suffered from...
The energy resolution of a single photon counting Microwave Kinetic Inductance Detector (MKID) can be degraded by noise coming from the primary low temperature amplifier in detector's readout system. Until recently, quantum limited amplifiers have been incompatible with these detectors due to dynamic range, power, and bandwidth constraints. However, we show that kinetic inductance based traveling wave parametric used for this application reaches limit. total system scheme was equal ~2.1...
We present the MKID Exoplanet Camera (MEC), a z through J band (800–1400 nm) integral field spectrograph located behind The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) at Telescope on Maunakea that utilizes Microwave Kinetic Inductance Detectors (MKIDs) as enabling technology for high contrast imaging. MEC is first permanently deployed near-infrared instrument and designed to operate both an IFU, focal plane wavefront sensor in multi-kHz feedback loop with SCExAO. read noise free,...
We present DARKNESS (the DARK-speckle Near-infrared Energy-resolving Superconducting Spectrophotometer), the first of several planned integral field spectrographs to use optical/near-infrared Microwave Kinetic Inductance Detectors (MKIDs) for high-contrast imaging. The photon counting and simultaneous low-resolution spectroscopy provided by MKIDs will enable real-time speckle control techniques post-processing suppression at framerates capable resolving atmospheric speckles that currently...
Abstract We report the direct imaging discovery of a low-mass companion to nearby accelerating A star, HIP 109427, with Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument coupled Microwave Kinetic Inductance Detector Exoplanet Camera (MEC) and CHARIS integral field spectrograph. data reduced reference star point spread function (PSF) subtraction yield 1.1–2.4 μ m spectra. MEC reveals in Y J band at comparable signal-to-noise ratio using stochastic speckle discrimination, no PSF...
We report on the design and performance of Microwave Kinetic Inductance Detectors (MKIDs) sensitive to single photons in optical near-infrared range using hafnium as sensor material. Our test device had a superconducting transition temperature 395 mK room normal state resistivity 97 $\mu \Omega$ cm with an RRR = 1.6. Resonators displayed internal quality factors around 200,000. Similar analysis MKIDs made from other highly resistive superconductors, we find that modeling response detector...
We present the development of a second generation digital readout system for photon counting microwave kinetic inductance detector (MKID) arrays operating in optical and near-IR wavelength bands. Our retains much core signal processing architecture from first system, but with significantly higher bandwidth, enabling kilopixel MKID arrays. Each set boards is capable reading out 1024 pixels multiplexed over 2 GHz bandwidth; two such units can be placed parallel to read full 2048 pixel feedline...
We recently reported extremely rapid changes in chromospheric fine structure observed using the IBIS instrument red wing of H alpha. Here, we examine data obtained during same observing run (August 7 2010), a mature active region NOAA 11094. analyze more including wavelength scans and from Solar Dynamics Observatory, all within 30 minute interval. Using slab radiative transfer model, investigate physical nature fibrils terms tube-like vs. sheet-like structures. Principal Component Analysis...
Direct Imaging of exoplanets is one the most technically difficult techniques used to study exoplanets, but holds immense promise for not just detecting characterizing planets around nearest stars. Ambitious instruments at world's largest telescopes have been built carry out this science: Gemini Planet Imager (GPI), SPHERE VLT, SCExAO Subaru, and P1640 Stellar Double Coronagraph (SDC) Palomar. These share a common archetype consisting an extreme AO system feeding coronagraph on-axis stellar...
Optical and near-IR Microwave Kinetic Inductance Detectors, or MKIDs, are superconducting photon counting detectors capable of measuring the energy arrival time individual OIR photons without read noise dark current. In this whitepaper we will discuss current status MKIDs MKID-based instruments.
Optical and near-infrared Microwave Kinetic Inductance Detectors, or MKIDs are low-temperature detectors with inherent spectral resolution that able to instantly register individual photons potentially no false counts readout noise. These properties make transformative for exoplanet direct imaging by enabling photon-statistics-based planet-discrimination techniques as well performing conventional noise-subtraction on shorter timescales. in the process of rapid development, such, full extent...
The Planetary Imaging Concept Testbed Using a Recoverable Experiment-Coronagraph (PICTURE-C) experiment is balloon-borne observatory for high-contrast imaging of debris disks and exoplanets around nearby stars. This will use 10,000-pixel Microwave Kinetic Inductance Detector (MKID) instrument as its science camera. PICTURE-C MKID Camera an integral field spectrograph (IFS) with bandpass λ = 540 − 660 nm that sits behind modest adaptive optics system coronagraph which promise to...
We present orbits for 24 binaries in the field of open cluster NGC 2516 (~150 Myr) and 13 2422 (~130 using results from a multi-year radial velocity survey cores. Six these systems are double-lined spectroscopic (SB2s). fit RV variable with orvara, MCMC-based fitting program that models Keplerian orbits. use precise stellar parallaxes proper motions Gaia EDR3 to determine membership. impose barycentric prior on all members; this significantly improves our orbital constraints. Two have...
Philip G Judge, Isabel Lipartito and Roberto Casini share their thoughts for the budding research scientist, on how to choose meaningful
Over the last few decades, nature of scientific research has changed in response to external influences. Firstly, powerful networked computers have become a standard tool. Secondly, society presses ever harder for deliver something "useful" back society, both through kinds funding opportunities that are made available, and critical public eye. Many agencies now demand "deliverables" seem select particular kind. Lastly, teamwork, often within very large projects, commonplace. Here, we step...
We present the development and testing of focal plane wavefront control techniques that utilize microwave kinetic inductance detectors (MKIDs) as a IFU. MKIDs are ideally suited to this application, they energy resolving, have single photon sensitivity, zero read noise, microsecond time resolution. These characteristics enable much higher feedback rates than conventional systems; for first time, measurements may be used correct atmospheric aberrations in addition quasistatics. A variety...
MagAO-X is a visible to near-IR AO system that will enable suite of instruments perform high-contrast, high-resolution science. During its "Phase II" plan 10-kilopixel Microwave Kinetic Inductance Detector (MKID) IFU be deployed as science camera behind MagAO-X. MKIDs are photon-counting detectors with energy resolution up 30. The photon counting capability and readout allow for microsecond time no associated read noise. As consequence the high rate MKID can used Focal Plane Wavefront Sensor...
We present an on-sky demonstration of a post-processing technique for companion detection called Stochastic Speckle Discrimination (SSD) and its ability to improve the faint companions using SCExAO MKID Exoplanet Camera (MEC). Using this SSD technique, MEC is able resolve at comparable signal noise other integral field spectrographs solely utilizing photon arrival time information without use any PSF subtraction techniques. takes advantage counting detectors, like detector found in MEC,...