Zobrazeno 11 - 20
of 740
pro vyhledávání: '"77"'
Publikováno v:
SPIE Proceedings.
An ultra-low dark current normal incidence p-type strained-layer In0.3Ga0.7As/In0.52Al0.48As quantum well IR photodetector (PSL-QWIP) grown on semi-insulating (100) InP substrate by MBE technique has been demonstrated for the first time. This PSL-QWI
Autor:
Gary McDermott
Publikováno v:
International Conference on Millimeter and Submillimeter Waves and Applications 1994.
Publikováno v:
Cryogenic Optical Systems and Instruments IV.
A 50 cm diameter, lightweight, Amersil TO8E, fused-natural-quartz mirror with a single arch cross section was tested at the NASA/Ames Research Center Cryogenic Optics Test Facility to measure cryogenic distortion and hysteresis. The mirror was cooled
Autor:
Sergey I. Tarapov, Ilary M. Rarenko, Igor Ivanchenko, Nikolai N. Beletskii, I. N. Gorbatyuk, Nina Popenko, Alexey A. Vertiy
Publikováno v:
SPIE Proceedings.
Excitation of surface magnetoplasma waves in the CdHg1Te semiconductors has been effected by the method of disturbed total internal reflection following the Otto scheme at the wavelength of 2 mm, in the temperature range 0.3 KT
Publikováno v:
SPIE Proceedings.
The responsivities of Si, Ge, and InSb photodiodes at 77 K are measured and compared. The results are used to determine the wavelength at which a change should occur in the detector materials used in the focal plan of the Mars Observer Visual and IR
Publikováno v:
SPIE Proceedings.
Laser glazing, using a KrF excimer laser (λ = 248 nm, τ = 22 ns), has been used to improve the corrosion resistance properties of crystallized Fe40Ni38Mo4B18 (Metglas 2826MB) and the permanent magnet material Nd15Fe77B8. The formation of an amorpho
Autor:
Christian Vigneron
Publikováno v:
SPIE Proceedings.
The fundamental characteristics of analytical stereoplotters compared to the analog stereoplotters is their facility to use them and the versatility given by the on-line of a mini-computer. Analog stereoplotters, even those classified universal, are
Publikováno v:
Optical Components and Materials XVIII.
In the pursuit of new mid-IR laser gain materials, dysprosium-doped barium fluoride was evaluated for its potential laser emission in the 3-μm spectral region. Comprehensive spectroscopic characterization was performed, including absorption, fluores
Autor:
Valery Filippov, Andrei Fedotov, Vasilii Ustimchik, Regina Gumenyuk, Teppo Noronen, Yuri Chamorovskii, Joona Rissanen
Publikováno v:
Fiber Lasers XVII: Technology and Systems.
We present a single-mode narrow band linear-polarized picosecond green fiber source delivered up to 146.4 kW of peak power. The laser architecture is composed of frequency-doubled all-fiber MOPA system operating at 1064 nm. The commercially available
Autor:
Peter D. Dahlberg, Annina M. Sartor, W. E. Moerner, Saumya Saurabh, Jiarui Wang, Lucy Shapiro
Publikováno v:
Single Molecule Spectroscopy and Superresolution Imaging XIII.
Single-molecule superresolution methods enable imaging of specifically-labeled biological samples with structures on length scales below the diffraction limit of visible light. Imaging samples at cryogenic temperatures (77 K) significantly reduces ph