Large Focal Plane Arrays for Future Missions (2009)
Scowen, Paul A., Nikzad, Shouleh, Hoenk, Michael, Gontijo, Ivair, Shapiro, Andrew, Greer, Frank, ...
We outline the challenges associated with the development and construction of large focal plane arrays for use both on the ground and in space. Using lessons learned from existing JPL-led and ASU/JPL...
The Star Formation Camera (2009)
Scowen, Paul A., Jansen, Rolf, Beasley, Matthew, Calzetti, Daniela, Desch, Steven, Fullerton, Alex, ...
The Star Formation Camera (SFC) is a wide-field (~15'x19, >280 arcmin^2), high-resolution (18x18 mas pixels) UV/optical dichroic camera designed for the Theia 4-m space-borne space telescope concept....
Bedabrata Pain, Thomas Cunningham, Shouleh Nikzad, Michael Hoenk, Todd Jones, Bruce Hancock, ...
Imaging with a back-illuminated CMOS imager provides a number of advantages, especially as the pixel size is reduced. These advantages include high (1 00%) fill-factor and increased quantum...
Blacksberg, Jordana, Hoenk, Michael E., Elliott, S. Tom, Holland, Stephen E., Nikzad, Shouleh
A low temperature process for Sb doping of silicon has been developed as a backsurface treatment for high-purity n-type imaging detectors. Molecular beam epitaxy (MBE) is used to achieve very high...
The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA) (2008)
Moustakas, Leonidas A, Bolton, Adam J, Booth, Jeffrey T, Bullock, James S, Cheng, Edward, Coe, Dan, ...
(abridged) The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA) is a mission concept for a 1.5-m near-UV through near-IR space observatory that will be dedicated to frequent...
Calibration and flight performance of the long-slit imaging dual order spectrograph (2008)
Lupu, Roxana E., McCandliss, Stephan R., Fleming, Brian, France, Kevin, Feldman, Paul D., Nikzad, Shouleh
We present a preliminary calibration and flight performance of the Long-Slit Imaging Dual Order Spectrograph (LIDOS), a rocket-borne instrument with a large dynamic range in the 900 - 1700A bandpass....
Ultra-low-temperature homoepitaxial growth of Sb-doped silicon (2008)
Blacksberg, Jordana, Hoenk, Michael E., Nikzad, Shouleh
An ultra-low-temperature process for homoepitaxial growth of high-quality, surface-confined, Sb-doped silicon layers is presented. Non-equilibrium growth by molecular beam epitaxy (MBE) is used to...
The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA) (2008)
Moustakas, Leonidas A., Bolton, Adam J., Booth, Jeffrey T., Bullock, James S., Cheng, Edward, Coe, Dan, ...
MODIFICATION OF THE SURFACE BAND-BENDING OF A SILICON CCD FOR LOW-ENERGY ELECTRON DETECTION (2007)
Aime L. Smith, Qiuming Yu, S. T. Elliott, Shouleh Nikzad
Silicon CCDS have limited sensitivity to particles and photons with short penetration depth, due to the surface depletion caused by the inherent positive charge in the native oxide. Because of...
Abstract Thinned Charge Coupled Devices with Flat Focal Planes for UV Imaging (2007)
Todd J. Jones, Peter W. Deelman, S. Tom Elliott, P. J. Grunthaner, Rick Wilson, Shouleh Nikzad
A versatile post-fabrication process to produce thinned, flat, back-illuminated
Delta-doped high purity silicon UV-NIR CCDs with high QE and low dark current (2007)
Hoenk, Michael, Blacksberg, Jordana, Nikzad, Shouleh, Elliott, S. Tom, Holland, Steve, Bebek, Chris
NASA/JPL
A study of ion beam sputtering of compound materials with laser spectroscopy (2007)
Single crystal metal sulfides of ZnS, CdS, and FeS[2] were bombarded with a 3 keV Ar[+] beam. The secondary neutrals sputtered from the suface of the target were interrogated by laser ionization mass...
Delta doping high purity CCDs and CMOS for LSST (2006)
Blacksberg, Jordana, Nikzad, Shouleh, Hoenk, Michael, Elliott, S. Tom, Bebek, Chris, Holland, Steve, ...
NASA/JPL
A back-illuminated megapixel CMOS image sensor (2006)
Pain, Bedabrata, Cunningham, Thomas, Nikzad, Shouleh, Hoenk, Michael, Jones, Todd, Wrigley, Chris, ...
In this paper, we present the test and characterization results for a back-illuminated megapixel CMOS imager. The imager pixel consists of a standard junction photodiode coupled to a three...
Blacksberg, Jordana, Hoenk, Michael E., Elliott, S. Tom, Holland, Stephen E., Nikzad, Shouleh
A low temperature process for Sb doping of silicon has been developed as a backsurface treatment for high-purity n-type imaging detectors. Molecular beam epitaxy (MBE) is used to achieve very high...
Low-Energy Electron Detection with Delta-Doped CCDs (2004)
Elliott, Tom, Yu, Q., Nikzad, Shouleh, Tombrello, T. A.
In this paper, we will briefly discuss delta-doped CCDs and their application of low-energy electron detection. We show that modification of the surface this way can greatly improve sensitivity to...
Modification of the Surface Band-Bending of a Silicon CCD For Low-Energy Electron Detection (2004)
Nikzad, Shouleh, Smith, Aimee L., Yu, Q., Elliot, S. T.
In this paper, we will discuss the modification of the band bending near the CCD surface by low-temperature MBE and report the applicatio of delta-doped CCDs to low-energy electron detection.
Direct detection and imaging of low-energy electrons with delta-doped charge-coupled devices (1998)
Nikzad, Shouleh, Yu, Qiuming, Smith, Aimée L., Jones, Todd J., Tombrello, T. A., Elliott, S. Tom
We report the use of delta-doped charge-coupled devices (CCDs) for direct detection of electrons in the 50–1500 eV energy range. We show that modification of the CCD back surface by molecular beam...
Wong, Selmer S., He, Gang, Nikzad, Shouleh, Ahn, Channing C., Atwater, Harry A.
Measurements of local order are demonstrated in Sn-containing alloys and epitaxial monolayer thickness films by analysis of extended-edge energy loss fine structure (EXELFS) data obtained by...
Nikzad, Shouleh, Wong, Selmer S., Ahn, Channing C., Smith, Aimee L., Atwater, Harry A.
In situ analysis of hydrocarbon desorption from hydrogen terminated Si(100) surfaces was performed in a silicon molecular beam epitaxy system, using reflection electron energy loss spectroscopy, in...
Nikzad, Shouleh, Ahn, Channing C., Atwater, Harry A.
Determination of alloy composition during epitaxial growth of GexSi1–x alloys has been demonstrated using reflection-electron energy loss spectroscopy (REELS) at reflection high-energy electron...
A study of ion beam sputtering of compound materials with laser spectroscopy (1990)
Single crystal metal sulfides of ZnS, CdS, and FeS[2] were bombarded with a 3 keV Ar[+] beam. The secondary neutrals sputtered from the suface of the target were interrogated by laser ionization mass...