Zobrazeno 1 - 10
of 10
pro vyhledávání: '"77"'
Publikováno v:
SPIE Proceedings.
The germanium (Ge) films of nanostructures deposited at 300 and 77 K by the cluster-beam evaporation technique are found to consist of small nanostructures. The crystal structure of the films is not the ordinary diamond but tetragonal structure. The
Autor:
Richard I. Epstein, Mansoor Sheik-Bahae, Alexander R. Albrecht, Eric Lee, Junwei Meng, Azzurra Volpi, Markus P. Hehlen, Mohammadreza Ghasemkhani, Aram Gragossian
Publikováno v:
Tri-Technology Device Refrigeration (TTDR) III.
Optical refrigeration of rare-earth-doped solids has reached the boiling point of argon, 87 K, and is expected to cool to that of nitrogen, 77 K, in the near future. This technology is poised to pave the way to compact, reliable, and vibrationfree al
Publikováno v:
SPIE Proceedings.
The spectroscopic detection of complex molecules, such as explosives, requires a much broader spectral tuning range of the employed laser compared to the well-established tunable diode laser spectroscopy of light molecules. In this paper we demonstra
Publikováno v:
Semiconductor Photodetectors II.
Silicon ROIC for MCT LWIR 576x6 diode matrix arrays was designed. It includes 4 blocks of 144x6 arrays with 56x43 micron pixels. Diodes shift perpendicular to scanning direction is 0.25 of pixel size. ROICs were designed for their manufacturing by 0.
Publikováno v:
SPIE Proceedings.
A CMOS test chip has been designed and fabricated which can monolithically integrate ultra low-power operational amplifiers with neural microprobes through post-IC processing. Neural microprobes of varying widths (70 μm, 60 μm, 50 μm, and 40 μm)
Publikováno v:
SPIE Proceedings.
In an attempt to combine the properties of high temperature superconductors with the high thermal conductivity and low specific heat of diamond, we have explored the deposition of in- situ YBa2Cu3O7-(delta ) (YBCO) superconducting films on polycrysta
Autor:
Hue Thi-Bach Nguyen, J. Earl Rudisill
Publikováno v:
SPIE Proceedings.
Gain enhancement from IR detectors could be realized if they were antireflection (AR) coated. The feasibility of AR coating silicon surfaces over the 6 to 11 micron and 11 to 17 micron bands has been demonstrated using single and double-layer coating
Autor:
John R. Doughty
Publikováno v:
SPIE Proceedings.
A Pulsed Short Wavelength Chemical Laser (SWCL) is essentially a bomb that produces coherent light. Current leading candidates have exothermicities ranging from 68 to 248 kcal/mol. The challenge to the fluid dynamicist is to tame the explosion and pr
Publikováno v:
SPIE Proceedings.
Detector Johnson-noise-limited operation of InSb photovoltaic detectors has previously been reported. Typically, a cooled, dual JFET is used to amplify the signal before passage to subsequent amplification electronics. Most configurations employ an a
Publikováno v:
SPIE Proceedings.
The photoluminescence spectrum of a GaAs/GaAlAs multiple quantum well p-i-n diode has been measured as a function of pressure. Room temperature measurements were carried out in a diamond anvil cell to about 4 GPa (40 kbars), and at 77 K to about 0.8