Photonic Crystals on Erbium doped tellurite Thin Films for Broadband Enhanced Photoluminescence at Near Infrared

2012 ◽  
Vol 1392 ◽  
Author(s):  
Pao T. Lin ◽  
M. Vanhoutte ◽  
J. Hu ◽  
N. S. Patel ◽  
V. Singh ◽  
...  
Keyword(s):  
Thin Film ◽  
Near Infrared ◽  
Extraction Efficiency ◽  
Ion Beam ◽  
External Cavity ◽  
Two Dimensional ◽  
Emission Layer ◽  
Lattice Constants ◽  
Thin Film Layer ◽  
Pl Emission

ABSTRACTTwo dimensional Er3+-TeO2 thin film photonics crystals (PhCs) are fabricated. These PhCs demonstrate broadband enhancement of PL emission at near Infrared (NIR). The PhC structures are written by dual beam focused ion beam (FIB). Highly uniformed patterns with smooth surfaces are observed. A pattern resolution better than hundred nanometers is achieved. PhCs arrays with photonic lattice constants from 350 nm to 1700 nm are examined in order to optimize the PL extraction efficiency. Strong photoluminescence around 1530 nm is observed by 488-532 nm lasers pumping. A confocal microscopy with spectrometer is used to capture the broadband PL signals from individual PhC array.The emission enhancement factor and spectral dependent extraction ratio are analyzed to find the interaction between PL lightwave and PhC structures. By optimize the PhC structures, 1500 um-1560 um broadband PL is successfully converted between the PL emission layer and the external cavity. A 60 % enhancement of surface extraction efficiency is achieved when PhC with periodicity a=800 nm is applied. When photonic lattice constants a are smaller than the critical periodicity 600 nm, the PL light becomes confined inside the thin film layer. Simulation is also performed by two dimensional finite difference time domain (FDTD) calculation in order to explain the experimental observed anisotropic PL enhancements.The broadband PL enhancement enables Er3+-TeO2 PhCs thin film as a potential light source for three dimensional integrated photonic circuits.

Influence of ion beam parameters onto two-dimensional optical thin film thickness distributions deposited by ion beam sputtering

2019 ◽  
Vol 682 ◽  
pp. 109-120 ◽  
Author(s):  
Wjatscheslaw Sakiew ◽  
Stefan Schrameyer ◽  
Marco Jupé ◽  
Philippe Schwerdtner ◽  
Nick Erhart ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Thickness ◽  
Ion Beam ◽  
Two Dimensional ◽  
Ion Beam Sputtering ◽  
Thin Film Thickness ◽  
Optical Thin Film ◽  
Beam Sputtering ◽  
Beam Parameters

Electro-Optical Characteristics of Vertical Alignment Cell by Ion-Beam Exposure on the SiC Thin Film Layer

2008 ◽  
Vol 480 (1) ◽  
pp. 10-18 ◽  
Author(s):  
Jeoung-Yeon Hwang ◽  
Sung-Ho Choi ◽  
Sang-Hoon Kim ◽  
Jin Jang ◽  
Dae-Shik Seo
Keyword(s):  
Thin Film ◽  
Ion Beam ◽  
Optical Characteristics ◽  
Vertical Alignment ◽  
Thin Film Layer ◽  
Film Layer

Ferroelectric Thin Film Microcavities and their Optical Resonant Properties

2009 ◽  
Vol 1182 ◽  
Author(s):  
Pao Tai Lin ◽  
William A. Russin ◽  
Alexandra Imre ◽  
Leonidas E. Ocola ◽  
Bruce W. Wessels
Keyword(s):  
Thin Film ◽  
Laser Scanning ◽  
Extraction Efficiency ◽  
Ion Beam ◽  
Incident Light ◽  
Ferroelectric Thin Film ◽  
Optical Diffraction ◽  
Strong Light ◽  
Light Localization ◽  
Fluorescence Measurements

AbstractTwo dimensional photonic crystal (PhC) microcavity structures were fabricated using epitaxial ferroelectric thin film as the optical media and their resonant optical properties were measured. The PhC structures are utilized in order to achieve strong light localization to enhance the interaction between the incident light and the nonlinear optical barium titanate (BTO). Fluorescence measurements were used to assess the resonant properties. Two types of resonant structures were investigated consisting of either dopant or vacancy PhC arrays. The nano patterning on BTO thin films was achieved using dual beam focused ion beam (FIB). For the dopant type PhC microcavity structure, a larger air hole is generated in every 5 x 5 unit cells forming a super cell. The spatial profiles of PhC microcavity structures are characterized by laser scanning confocal microscopy. Structures with a feature size approaching the optical diffraction limit are clearly resolved. Fluorescence measurements on PhCs coated with a fluorescent dye were carried out to determine the relationship between the degree of light localization and the photonic band structure. Enhanced fluorescence at wavelengths 550-600 nm is observed in the dye covered PhCs with lattice period a =200 nm and a =400 nm. The large fluorescence enhancement results from the presence of PhC stop bands that increase the emission extraction efficiency due to the strong light confinement. Since the only allowed propagation direction for the scattered fluorescence light is out-of-plane, this enhances the vertically fluorescent extraction efficiency. These BTO optical microcavity structures can potentially serve as active nano-photonic components in bio-sensors and integrated photonic circuits.

Molecular-Dynamics Simulations of Low-Energy Ion/Surface Interactions During Ion-Beam-Assisted Thin Film Deposition.

1993 ◽  
Vol 317 ◽  
Author(s):  
H. Feil
Keyword(s):  
Thin Film ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Ion Beam ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Low Energy ◽  
Angle Of Incidence ◽  
Two Dimensional ◽  
Dynamics Simulations

ABSTRACTMolecular dynamics simulations are performed of low-energy ion irradiation of two-dimensional Cu islands on a Cu(111) surface. The irradiation of the surface with low-energy particles influences the mobility of the atoms in the surface region and therefore may alter the thin film growth Mode. The effect of 100 eV Ar+ ions incident at grazing angles is limited to situations in which the ions hit the edges of the islands. In Most cases the islands lose one or two atoms. Changing the angle-of-incidence or changing the type of the incident particle has a strong influence on the size distribution of the two-dimensional islands.

TWO-DIMENSIONAL SILICON-BASED PHOTONIC CRYSTAL SLAB WITH PARTIAL AIR-BRIDGE

2006 ◽  
Vol 05 (06) ◽  
pp. 683-687 ◽  
Author(s):  
JIE TIAN ◽  
SHOU-ZHEN HAN ◽  
BING-YING CHENG ◽  
SHUAI FENG ◽  
ZHI-YUAN LI ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Focused Ion Beam ◽  
Near Infrared ◽  
Ion Beam ◽  
Fdtd Method ◽  
Direct Write ◽  
Silica Layer ◽  
Two Dimensional ◽  
Large Area ◽  
Silicon Based

We describe a fabrication process of the near-infrared two-dimensional photonic crystal (PC) slab, which is sustained by part of the silica layer underneath the slab and forms a partly air-bridged type. The process involves focused ion beam (FIB) direct write following the selective wet etching of silicon on isolator (SOI) structures. By control the time of dissolving of silica layer in SOI, we successfully fabricated the sample and measured its transmittance spectrum. It is found that the observed spectrum is consistent with the theoretical band structure with FDTD method. For there is partly silica layer remained to support the air-bridge slab, the PC can be fabricated with a large area. If we change the support material under the slab, we might be able to fabricate PC laser with this kind of structure.

Influence of a two-dimensional SiO2 nanorod structure on the extraction efficiency of ZnS:Mn thin-film electroluminescent devices

2004 ◽  
Vol 84 (8) ◽  
pp. 1377-1379 ◽  
Author(s):  
Young Rag Do ◽  
Yoon Chang Kim ◽  
Sang-Hwan Cho ◽  
Dong Sik Zang ◽  
Young-Duk Huh ◽  
...  
Keyword(s):  
Thin Film ◽  
Extraction Efficiency ◽  
Two Dimensional ◽  
Electroluminescent Devices
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