Zobrazeno 41 - 50
of 740
pro vyhledávání: '"77"'
Autor:
Tunay Tansel, Atilla Aydinli, Coskun Kocabas, Omer Salihoglu, Kutlu Kutluer, Rasit Turan, Abdullah Muti
Publikováno v:
SPIE Proceedings.
We have achieved significant improvement in the electrical performance of the InAs/GaSb midwave infrared photodetector (MWIR) by using atomic layer deposited (ALD) aluminium oxide (Al2O3) as a passivation layer. Plasma free and low operation temperat
Autor:
Salihoğlu, Ömer, Muti, Abdullah, Kutluer, K., Tansel, T., Turan, R., Kocabaş, Coşkun, Aydınlı, Atilla
Publikováno v:
Proceedings of SPIE
Conference name: SPIE Defense, Security, and Sensing, 2012 Date of Conference: 23-27 April 2012 We have achieved significant improvement in the electrical performance of the InAs/GaSb midwave infrared photodetector (MWIR) by using atomic layer deposi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3533::61e430095343babed8b6a6b1d970c441
https://hdl.handle.net/11693/28242
https://hdl.handle.net/11693/28242
Autor:
Sam A. Keo, Sarath D. Gunapala, Arezou Khoshakhlagh, David Z. Ting, Alexander Soibel, Cory J. Hill, Linda Höglund
Publikováno v:
SPIE Proceedings.
In this paper, the relation between the photoluminescence (PL) intensity and the PL peak wavelength was studied. A linear decrease of the PL intensity with increasing cut-off wavelength of long wavelength infrared CBIRDs was observed at 77 K and the
Autor:
Yanqiu Lv, Qingduan Meng
Publikováno v:
SPIE Proceedings.
Planar InGaAs/InP p-i-n photodiodes have been successfully fabricated, and its spectral response, current-voltage characteristic, photogenerated signal and noise were measured at 300 K and 77 K with the blackbody temperature fixed at 900 K. It was fo
Autor:
G. A. Newburgh, Mark Dubinskii
Publikováno v:
Laser Technology for Defense and Security VII.
We report what is believed to be the first laser operation based on Ho 3+ -doped YVO 4 . The Ho +3 : YVO 4 was resonantly diode-pumped at ~1.93 μm to produce up to 1.6 W of continuous wave (CW) output power at ~2.054 μm. The laser had a slope effic
Publikováno v:
SPIE Proceedings.
We report on an ytterbium-doped fiber laser (FL) pumped by an Yb:YAG thin disk laser [1]. The FL essentially acts as a brilliance converter suitable for applications requiring a diffraction limited kilowatt-class laser source. The FL can be positione
Autor:
George W. Turner, Joseph P. Donnelly, Robert J. Bailey, John J. Zayhowski, Michael J. Manfra, Mohamed A. Diagne, Michael K. Connors, E.K. Duerr, Michael J. Grzesik
Publikováno v:
SPIE Proceedings.
At MIT Lincoln Laboratory, avalanche photodiodes (APDs) have been developed for both 2-μm and 3.4-μm detection using the antimonide material system. These bulk, lattice-matched detectors operate in Geiger mode at temperatures up to 160 K. The 2-μm
Autor:
Jarrod Vaillancourt, Xuejun Lu
Publikováno v:
SPIE Proceedings.
We report a very longwave Infrared (> 14 μm) quantum dot photodetector working at 77 K. Very longwave infrared (VLWIR) detection at a cut-off wavelength of 15.3 μm was achieved through QD size engineering. Peak specific photodetectivity D* of 3.3x1
Autor:
Fiodor F. Sizov, S. A. Dvoretsky, V. V. Vasiliev, Joanna V. Gumenjuk-Sichevska, N. N. Mikhailov, Yu. E. Kamenev
Publikováno v:
SPIE Proceedings.
Modern technology advances combined with unique physical properties of mercury cadmium telluride (MCT) material, empower low-signal applications in technical vision systems. Properties of MCT detectors manufactured from LPE and MBE epilayers and thei
Publikováno v:
SPIE Proceedings.
We describe the design and optimization of a wide-field ne ar-infrared camera and spectrograph (NICAS) for Mt Abu 1.2 m, f/13 Cassegrain telescope of Physical Research Laboratory. The principal science goals include photometric mapping of star formin