Black Silicon Germanium (SiGe) for Extended Wavelength Near Infrared Electro-optical Applications

2010 ◽  
Author(s):  
Fred Semendy ◽  
Patrick Taylor ◽  
Gregory Meissner ◽  
Priyalal Wijewarnasuriya
Keyword(s):  
Silicon Germanium ◽  
Near Infrared ◽  
Black Silicon ◽  
Optical Applications

scholarly journals Nano-Crystallization of Ln-Fluoride Crystals in Glass-Ceramics via Inducing of Yb3+ for Efficient Near-Infrared Upconversion Luminescence of Tm3+

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1033
Author(s):  
Jianfeng Li ◽  
Yi Long ◽  
Qichao Zhao ◽  
Shupei Zheng ◽  
Zaijin Fang ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Near Infrared ◽  
Upconversion Luminescence ◽  
Glass Ceramics ◽  
Upconversion Emission ◽  
Ceramic Composites ◽  
Wide Range ◽  
Transmission Window ◽  
Optical Applications ◽  
Upconversion Emissions

Transparent glass-ceramic composites embedded with Ln-fluoride nanocrystals are prepared in this work to enhance the upconversion luminescence of Tm3+. The crystalline phases, microstructures, and photoluminescence properties of samples are carefully investigated. KYb3F10 nanocrystals are proved to controllably precipitate in the glass-ceramics via the inducing of Yb3+ when the doping concentration varies from 0.5 to 1.5 mol%. Pure near-infrared upconversion emissions are observed and the emission intensities are enhanced in the glass-ceramics as compared to in the precursor glass due to the incorporation of Tm3+ into the KYb3F10 crystal structures via substitutions for Yb3+. Furthermore, KYb2F7 crystals are also nano-crystallized in the glass-ceramics when the Yb3+ concentration exceeds 2.0 mol%. The upconversion emission intensity of Tm3+ is further enhanced by seven times as Tm3+ enters the lattice sites of pure KYb2F7 nanocrystals. The designed glass ceramics provide efficient gain materials for optical applications in the biological transmission window. Moreover, the controllable nano-crystallization strategy induced by Yb3+ opens a new way for engineering a wide range of functional nanomaterials with effective incorporation of Ln3+ ions into fluoride crystal structures.

scholarly journals Near-infrared optical absorption enhanced in black silicon via Ag nanoparticle-induced localized surface plasmon

2014 ◽  
Vol 9 (1) ◽  
pp. 519 ◽  
Author(s):  
Peng Zhang ◽  
Shibin Li ◽  
Chunhua Liu ◽  
Xiongbang Wei ◽  
Zhiming Wu ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Surface Plasmon ◽  
Near Infrared ◽  
Localized Surface Plasmon ◽  
Black Silicon ◽  
Ag Nanoparticle

scholarly journals Heterostructured silicon-germanium-silicon p-i-n avalanche photodetectors for chip-integrated optoelectronics -INVITED

2021 ◽  
Vol 255 ◽  
pp. 01002
Author(s):  
Daniel Benedikovic ◽  
Leopold Virot ◽  
Guy Aubin ◽  
Jean-Michel Hartmann ◽  
Farah Amar ◽  
...  
Keyword(s):  
Health Monitoring ◽  
Optical Communications ◽  
Silicon Germanium ◽  
High Speed ◽  
Near Infrared ◽  
Building Blocks ◽  
Electrical Signal ◽  
Avalanche Photodetectors ◽  
Infrared Wavelengths ◽  
Germanium Silicon

Optical photodetectors are at the forefront of photonic research since the rise of integrated optics. Photodetectors are fundamental building blocks for chip-scale optoelectronics, enabling conversion of light into an electrical signal. Such devices play a key role in many surging applications from communication and computation to sensing, biomedicine and health monitoring, to name a few. However, chip integration of optical photodetectors with improved performances is an on-going challenge for mainstream optical communications at near-infrared wavelengths. Here, we present recent advances in heterostructured silicon-germanium-silicon p-i-n photodetectors, enabling high-speed detection on a foundry-compatible monolithic platform.

Development of a New Glass for both Visible and Near-Infrared Optical Applications

2018 ◽  
Vol 786 ◽  
pp. 224-235
Author(s):  
Hytham Abdelghany El-Ghany
Keyword(s):  
Optical Materials ◽  
Nonlinear Optical ◽  
Near Infrared ◽  
Nonlinear Optical Materials ◽  
Melt Quenching ◽  
Nd:Yag Lasers ◽  
Near Ir ◽  
Prepared Glass ◽  
Optical Applications ◽  
Electric Susceptibility

A glass system of composition 40P2O5-40ZnO-(20-x)Na2O-xCdO (where, x = 1, 2, 3, 4, 5 and 6 mol%) was prepared using the conventional melt quenching technique. The glass formability of the prepared samples was inspected using XRD technique. Archimedes’ method was used to determine the density of the prepared glass samples then the molar volume was calculated. The optical spectroscopic investigations of the prepared glass samples were carried out over the spectral range (190-2500 nm). The proposed glass showed a successive transparency in both visible and near-IR ranges of spectrum till 2500 nm with considerably high transmission of about 78%. The refractive index of the glass samples with some other useful parameters such as dielectric constant, electric susceptibility and electronic polarizability of the prepared glass were evaluated. The results suggest the practicality of utilizing such new glass in the fabrication of optical supplies such as lenses and optical windows used for Nd:YAG lasers. The metallization criteria data of the prepared glass propose a good basis for predicting new nonlinear optical materials.

A silicon-germanium W-structure photodiode for near-infrared detection

2009 ◽  
Vol 27 (1) ◽  
pp. 23 ◽  
Author(s):  
Dyan Ali ◽  
Phillip Thompson ◽  
Joseph DiPasquale ◽  
Christopher J. K. Richardson
Keyword(s):  
Silicon Germanium ◽  
Near Infrared ◽  
Infrared Detection

Development of silicon-germanium visible-near infrared arrays

2016 ◽  
Author(s):  
John W. Zeller ◽  
Caitlin Rouse ◽  
Harry Efstathiadis ◽  
Pradeep Haldar ◽  
Jay S. Lewis ◽  
...  
Keyword(s):  
Silicon Germanium ◽  
Near Infrared ◽  
Infrared Arrays

scholarly journals Towards nonlinear conversion from mid- to near-infrared wavelengths using Silicon Germanium waveguides

2014 ◽  
Vol 22 (8) ◽  
pp. 9667 ◽  
Author(s):  
Kamal Hammani ◽  
Mohamed A. Ettabib ◽  
Adonis Bogris ◽  
Alexandros Kapsalis ◽  
Dimitris Syvridis ◽  
...  
Keyword(s):  
Silicon Germanium ◽  
Near Infrared ◽  
Infrared Wavelengths ◽  
Nonlinear Conversion

Highly Fluorescent, Near-Infrared-Emitting Cd2+-Tuned HgS Nanocrystals with Optical Applications

Langmuir ◽  
2015 ◽  
Vol 31 (11) ◽  
pp. 3500-3509 ◽  
Author(s):  
Jing Yang ◽  
Yaoping Hu ◽  
Jun Luo ◽  
Yu-Hua Zhu ◽  
Jun-Sheng Yu
Keyword(s):  
Near Infrared ◽  
Optical Applications
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