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Proceedings Paper

Architecture, development and implementation of a SWIR to visible integrated up-conversion imaging device
Author(s): Gabby Sarusi; Tzvi Templeman; Elad Hechster; Nimrod Nissim; Vladimir Vitenberg; Nitzan Maman; Amir Tal; Assi Solodar; Guy Makov; Ibrahim Abdulhalim; Iris Visoly-Fisher; Yuval Golan
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Paper Abstract

A new concept of short wavelength infrared (SWIR) to visible upconversion integrated imaging device is proposed, modeled and some initial measured results are presented. The device is a hybrid inorganic-organic device that comprises six nano-metric scale sub-layers grown on n-type GaAs substrates. The first layer is a ~300nm thick PbSe nano-columnar absorber layer grown in (111) orientation to the substrate plan (100), with a diameter of 8- 10nm and therefore exhibit quantum confinement effects parallel to the substrate and bulk properties perpendicular to it. The advantage of this structure is the high oscillator strength and hence absorption to incoming SWIR photons while maintaining the high bulk mobility of photo-excited charges along the columns. The top of the PbSe absorber layer is coated with 20nm thick metal layer that serves as a dual sided mirror, as well as a potentially surface plasmon enhanced absorption in the PbSe nano-columns layer. The photo-excited charges (holes and electrons in opposite directions) are drifted under an external applied field to the OLED section (that is composed of a hole transport layer, an emission layer and an electron transport layer) where they recombine with injected electron from the transparent cathode and emit visible light through this cathode. Due to the high absorption and enhanced transport properties this architecture has the potential of high quantum efficiency, low cost and easy implementation in any optical system. As a bench-mark, alternative concept where InGaAs/InP heterojunction couple to liquid crystal optical spatial light modulator (OSLM) structure was built that shows a full upconversion to visible of 1550nm laser light.

Paper Details

Date Published: 19 April 2016
PDF: 16 pages
Proc. SPIE 9884, Nanophotonics VI, 98840L (19 April 2016); doi: 10.1117/12.2231526
Show Author Affiliations
Gabby Sarusi, Ben-Gurion Univ. of the Negev (Israel)
Tzvi Templeman, Ben-Gurion Univ. of the Negev (Israel)
Elad Hechster, Ben-Gurion Univ. of the Negev (Israel)
Nimrod Nissim, Ben-Gurion Univ. of the Negev (Israel)
Vladimir Vitenberg, Ben-Gurion Univ. of the Negev (Israel)
Nitzan Maman, Ben-Gurion Univ. of the Negev (Israel)
Amir Tal, Ben-Gurion Univ. of the Negev (Israel)
Assi Solodar, Ben-Gurion Univ. of the Negev (Israel)
Guy Makov, Ben-Gurion Univ. of the Negev (Israel)
Ibrahim Abdulhalim, Ben-Gurion Univ. of the Negev (Israel)
Iris Visoly-Fisher, Ben-Gurion Univ. of the Negev (Israel)
Yuval Golan, Ben-Gurion Univ. of the Negev (Israel)

Published in SPIE Proceedings Vol. 9884:
Nanophotonics VI
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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