Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Jonathan R. Andrews"'
Autor:
Axel Reisinger, Luke F. Lester, Sanjay Krishna, Mani Sundaram, Thomas E. Vandervelde, Sergio R. Restaino, Jonathan R. Andrews, Yagya D. Sharma, Jay S. Brown, Scott W. Teare, Woo-Yong Jang
Publikováno v:
IEEE Transactions on Electron Devices. 58:2022-2027
Our previous research has reported on the development of the first generation of quantum dots-in-a-well (DWELL) focal plane arrays (FPAs), which are based on InAs quantum dots (QDs) embedded in an InGaAs well having GaAs barriers, which have demonstr
Autor:
Jonathan R. Andrews, Sergio R. Restaino, Scott W. Teare, Majeed M. Hayat, Yagya D. Sharma, Sang Jun Lee, Sam Kyu Noh, Woo-Yong Jang, Jorge E. Pezoa, Sanjay Krishna
Publikováno v:
Infrared Physics & Technology. 52:380-384
Infrared detectors based on quantum wells and quantum dots have attracted a lot of attention in the past few years. Our previous research has reported on the development of the first generation of quantum dots-in-a-well (DWELL) focal plane arrays, wh
Autor:
Jonathan R. Andrews, Sanjay Krishna, Yagya D. Sharma, Jay S. Brown, Sergio R. Restaino, Thomas E. Vandervelde, Mani Sundaram, Scott W. Teare, Axel Reisinger, S.J. Lee
Publikováno v:
IEEE Transactions on Electron Devices. 56:512-516
This paper reports on a comparison between a commercially available quantum-well infrared focal plane array (FPA) and a custom quantum-dot (QD)-in-a-well (DWELL) infrared FPA in the long-wave infrared (LWIR). The DWELL detectors consist of an active
Autor:
Sergio R. Restaino, James H. Clark, Ellyn K. Baines, J. Tom Armstrong, Bob T. Zavala, Donald J. Hutter, Henrique R. Schmitt, Jonathan R. Andrews, James A. Benson
Publikováno v:
SPIE Proceedings.
The Navy Precision Optical Interferometer is an astronomical optical interferometer operating near Flagstaff, Arizona. A joint program between the United States Naval Observatory, the Naval Research Laboratory and Lowell Observatory, it has historica
Autor:
K. P. Judd, Ty Martinez, Sergio R. Restaino, Jonathan R. Andrews, Freddie Santiago, Christopher C. Wilcox
Publikováno v:
SPIE Proceedings.
The turbulent effects from the Earth’s atmosphere degrade the performance of any optical system within it. There have been numerous studies in the effects of atmospheric turbulence on an imaging system that is pointed vertically to the sky looking
Autor:
Christopher C. Wilcox, Sergio R. Restaino, Jonathan R. Andrews, Ty Martinez, Don M. Payne, Freddie Santiago
Publikováno v:
SPIE Proceedings.
Adaptive Optics (AO) is an ensemble of techniques that aims at the remedial of the deleterious effects that the Earth's turbulent atmosphere induces on both imagery and signal gathering in real time. It has been over four decades since the first AO s
Publikováno v:
SPIE Proceedings.
The observation of satellites at geostationary earth orbits (GEO) from the ground presents some formidable technical and scientific challenges. In recent years, several approaches have been proposed and some have undergone field tests. The Naval Rese
Autor:
Donald J. Hutter, J. A. Benson, Sergio R. Restaino, Christopher C. Wilcox, Michael E. DiVittorio, Frederick J. Vrba, Robert B. Hindsley, Henrique R. Schmitt, J. Thomas Armstrong, Jonathan R. Andrews, Steven A. Gregory, Paul D. Shankland
Publikováno v:
Applied optics. 50(17)
Using a 15.9 m baseline at the Navy Prototype Optical Interferometer (NPOI), we have successfully detected interferometric fringes in observations of the geosynchronous satellite (geosat) DirecTV-9S while it glinted on two nights in March 2009. The f
Autor:
Sergio R. Restaino, Freddie Santiago, Don M. Payne, Ty Martinez, Jonathan R. Andrews, Christopher C. Wilcox
Publikováno v:
SPIE Proceedings.
The Naval Prototype Optical Interferometer (NPOI) is the longest baseline at visible wavelengths interferometer in the world. The astronomical capabilities of such an instrument are being exploited and recent results will be presented. NPOI is also t
Autor:
Joseph A. Duperre, Ty Martinez, Sergio R. Restaino, Christopher C. Wilcox, Freddie Santiago, Charmaine Gilbreath, Jonathan R. Andrews, Don M. Payne, Stephen Myers, Carlos O. Font
Publikováno v:
SPIE Proceedings.
The use of Spatial Light Modulators (SLM), Liquid Crystal Devices for atmospheric turbulence simulation in optical system has increased in the recent years. These devices allow the development of test-beds that can be used to simulate, analyze and im