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- Iron garnet (4)
- MSM photodetectors (4)
- Co-sputtering (3)
- Fiber optic networks (3)
- Integrated optics (3)
- MO garnets (3)
- Magnetic anisotropy (3)
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- Magnetic resonance imaging (3)
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- Magneto-plasmonic crystals (3)
- Multilayer heterostructures (3)
- Nanostructured materials (3)
- Plasmonic nano-gratings (3)
- Aluminium (2)
- Amorphous (2)
- Annealing (2)
- Atomic and molecular physic (2)
- Bismuth (2)
- Composite materials (2)
- Data visualisation (2)
- Deposition process (2)
- Digital forensics (2)
- FDTD simulation (2)
- Faraday effect (2)
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Articles 31 - 60 of 68
Full-Text Articles in Engineering
Groove Shape-Dependent Absorption Enhancement Of 850 Nm Msm Photodetectors With Nano-Gratings., Narottam Das, Ayman Karar, Mikhail Vasiliev, Chee Leong Tan, Kamal Alameh, Yong Tak Lee
Groove Shape-Dependent Absorption Enhancement Of 850 Nm Msm Photodetectors With Nano-Gratings., Narottam Das, Ayman Karar, Mikhail Vasiliev, Chee Leong Tan, Kamal Alameh, Yong Tak Lee
Mikhail Vasiliev
Finite difference time-domain (FDTD) analysis is used to investigate the light absorption enhancement factor dependence on the groove shape of the nano-gratings etched into the surfaces of metal-semiconductor-metal photodetector (MSM-PD) structures. By patterning the MSM-PDs with optimized nano-gratings a significant improvement in light absorption near the design wavelength is achieved through plasmon-assisted electric field concentration effects. Simulation results show about 50 times light absorption enhancement for 850 nm light due to improved optical signal propagation through the nano-gratings.
Three-Wave Fiber Fabry-Perot Interferometer For Simultaneous Measurement Of Temperature And Water Salinity Of Seawater, Linh Nguyen, Mikhail Vasiliev, Kamal Alameh
Three-Wave Fiber Fabry-Perot Interferometer For Simultaneous Measurement Of Temperature And Water Salinity Of Seawater, Linh Nguyen, Mikhail Vasiliev, Kamal Alameh
Mikhail Vasiliev
We report a fiber sensor for simultaneous measurement of temperature and water salinity. The proposed sensor structure is based on a three-wave Fabry-Pérot interferometer (FPI) fabricated in a single-mode optical fiber (SMF) by focused ion beam (FIB) milling. The open cavity of the three-wave FPI was filled with water under test and used as the main sensing element and the lengths of the open and silica cavity were comparable. These features of the proposed sensor lead to three groups of interference fringes with distinct sensitivities in the wavelength domain with respect to the changes in both the water salinity and …
A Novel Technique For Microstructure Characterization Of Garnet Films, P.C. Wo, P.R. Munroe, Mikhail Vasiliev, Zonghan Xie, Kamal Alameh, V.A. Kotov
A Novel Technique For Microstructure Characterization Of Garnet Films, P.C. Wo, P.R. Munroe, Mikhail Vasiliev, Zonghan Xie, Kamal Alameh, V.A. Kotov
Mikhail Vasiliev
Bismuth-substituted iron garnet exhibits remarkable magneto-optical properties in magnetic photonic crystal (MPC) structures, and has the potential to improve performance in optical integrated circuits for communication networks and optical sensing applications. The microstructure and thickness of these garnet films has a strong influence over their optical, magnetic and magneto-optic (MO) properties. The thickness of these films has been measured indirectly via optical interference and ellipsometry, which are unable to map thickness variations due to surface roughness of both the film and the substrate. However, little direct observation has been carried out to provide detailed information about the microstructure of the …
New Class Of Garnet Nanocomposites For Use In Magnetic Photonic Crystals Prepared By Rf Magnetron Co-Sputtering, Mohammad Nur-E-Alam, Mikhail Vasiliev, Kamal Alameh
New Class Of Garnet Nanocomposites For Use In Magnetic Photonic Crystals Prepared By Rf Magnetron Co-Sputtering, Mohammad Nur-E-Alam, Mikhail Vasiliev, Kamal Alameh
Mikhail Vasiliev
No abstract provided.
Rf-Sputtered Bi-Substituted Iron Garnet Composite Films For Visible-Range Magnetooptics, Mohammad Alam, Mikhail Vasiliev, Kamal Alameh, V. A. Kotov
Rf-Sputtered Bi-Substituted Iron Garnet Composite Films For Visible-Range Magnetooptics, Mohammad Alam, Mikhail Vasiliev, Kamal Alameh, V. A. Kotov
Mikhail Vasiliev
We report on the synthesis of new magneto-optical materials with excellent optical and magneto-optical properties for visible-range and near-infrared applications. Bi-substituted composite garnet films fabricated with excess bismuth oxidecontent using RF co-sputtering and oven-annealing processes have been found to possess simultaneously record MO quality and uniaxial magnetic anisotropy.
Thin Film Coatings For Solar And Thermal Radiation Control Prepared By Physical Vapour Deposition, Yamna El Mouedden, Ramzy Alghamedi, Mohammad Nur-E-Alam, Mikhail Vasiliev, Kamal Alameh
Thin Film Coatings For Solar And Thermal Radiation Control Prepared By Physical Vapour Deposition, Yamna El Mouedden, Ramzy Alghamedi, Mohammad Nur-E-Alam, Mikhail Vasiliev, Kamal Alameh
Mikhail Vasiliev
No abstract provided.
Doped Iron Garnet Materials For Magnetic Photonic Crystals, Mikhail Vasiliev, Kamal Alameh, Viatcheslav Kotov
Doped Iron Garnet Materials For Magnetic Photonic Crystals, Mikhail Vasiliev, Kamal Alameh, Viatcheslav Kotov
Mikhail Vasiliev
We have established a set of technologies for the deposition and annealing of magneto-optic garnets for use in photonic crystals. Devices for sensing magnetic fields and polarisation control using reconfigurable photonic crystals are being developed.
Garnet Nanocomposite For Use In Magnetic Photonic Crystals Prepared By Composition Adjustment In The Bi₃Fe₃O₁₂–Bi₂Dy₁Fe₄Ga₁ O₁₂ Material System, Mohammad Nur E Alam, Mikhail Vasiliev, Viatcheslav Kotov, Kamal Alameh
Garnet Nanocomposite For Use In Magnetic Photonic Crystals Prepared By Composition Adjustment In The Bi₃Fe₃O₁₂–Bi₂Dy₁Fe₄Ga₁ O₁₂ Material System, Mohammad Nur E Alam, Mikhail Vasiliev, Viatcheslav Kotov, Kamal Alameh
Mikhail Vasiliev
RF co-sputtered nanocomposite (Bi3Fe5O12-Bi2Dy1Fe4Ga1O12) thin films are prepared using composition adjustment approach, implemented by varying the RF powers at each sputtering target. A new MO nanocomposite material is obtained by means of applying optimized annealing crystallization process to these as-deposited garnet layers. The optimally annealed garnet nanocomposites exhibit a significant red shift of the main MO transitions and show strong Faraday rotation of about 8.8°/μm at 532 nm simultaneously with having a high MO quality and magnetization direction perpendicular to the film plane.
New Class Of Garnet Nanocomposites For Use In Magnetic Photonic Crystals Prepared By Rf Magnetron Co-Sputtering, Mohammad Nur E Alam, Mikhail Vasiliev, Kamal Alameh
New Class Of Garnet Nanocomposites For Use In Magnetic Photonic Crystals Prepared By Rf Magnetron Co-Sputtering, Mohammad Nur E Alam, Mikhail Vasiliev, Kamal Alameh
Mikhail Vasiliev
A new class of magneto-optic garnet nanocomposite materials is prepared using two Bi-substituted iron garnet materials of composition types (Bi,Dy) 3(Fe,Ga)5O12 and Bi3Fe 5O12. A composition adjustment approach is applied by varying the radio frequency (RF) powers driving each sputtering target during the deposition process. This new class of nanocomposite materials exhibits simultaneously high specific Faraday rotation, MO figure of merit, and effective uniaxial magnetic anisotropy after being crystallized through optimized annealing processes. We demonstrate experimentally that the excellent combination of materials' properties obtained in this garnet nanocomposite is particularly advantageous for developing magneto-photonic crystals as well as optical sensors …
Thin Film Coatings For Solar And Thermal Radiation Control Prepared By Physical Vapour Deposition , Yamna El Mouedden, Ramzy Alghamedi, Mohammad Nur E Alam, Mikhail Vasiliev, Kamal Alameh
Thin Film Coatings For Solar And Thermal Radiation Control Prepared By Physical Vapour Deposition , Yamna El Mouedden, Ramzy Alghamedi, Mohammad Nur E Alam, Mikhail Vasiliev, Kamal Alameh
Mikhail Vasiliev
Growth of multilayer thin film structures containing dielectric and metal layers using physical vapor deposition is investigated for use in applications requiring the control of thermal and solar radiation propagating through glass windows. In particular, metal-dielectric multilayer structures reflecting UV, near-infrared and thermal radiations whilst maintaining a maximum transmission in the visible range are prepared using both an E-Beam and Thermal evaporator and a RF Magnetron sputtering system. Measured transmittance spectra for the developed structures are in agreement with simulation results and demonstrate that with the use of optimum metal-dielectric layer combination it is possible to realize a coated glass …
Metal-Semiconductor-Metal (Msm) Photodetectors With Plasmonic Nanogratings, Narottam K. Das, Ayman Karar, C L Tan, Mikhail Vasiliev, Kamal Alameh, Yong Tak Lee
Metal-Semiconductor-Metal (Msm) Photodetectors With Plasmonic Nanogratings, Narottam K. Das, Ayman Karar, C L Tan, Mikhail Vasiliev, Kamal Alameh, Yong Tak Lee
Mikhail Vasiliev
We discuss the light absorption enhancement factor dependence on the design of nanogratings inscribed into metal-semiconductor-metal photodetector (MSM-PD) structures. These devices are optimized geometrically, leading to light absorption improvement through plasmon-assisted effects. Finite-difference time-domain (FDTD) simulation results show ~50 times light absorption enhancement for 850 nm light due to improved optical signal propagation through the nanogratings. Also, we show that the light absorption enhancement is strongly dependent on the nanograting shapes in MSM-PDs.
Magnetic Field Sensors And Visualizers Using Magnetic Photonic Crystals, Mikhail Vasiliev, Kamal Alameh, Viatcheslav Kotov
Magnetic Field Sensors And Visualizers Using Magnetic Photonic Crystals, Mikhail Vasiliev, Kamal Alameh, Viatcheslav Kotov
Mikhail Vasiliev
Magneto-optical imaging is widely used to observe the domain patterns in magnetic materials, visualize defects in ferromagnetic objects, and measure the spatial distribution of stray magnetic fields. Optimized 1D magneto-photonic crystals enable a significant increase in the sensitivity of magneto-optical sensors. The properties of such devices based on the optimized reflection (doubled Faraday rotation) mode and the use of 1D magnetic photonic crystals as sensors are discussed. Experimental results of the fabrication and characterization of ferrite-garnet layers possessing uniaxial magnetic anisotropy are shown, and an optimized film structure suitable for magneto-optical imaging is proposed.
Microstructural Characterization Of Sputtered Garnet Materials And All-Garnet Magnetic Heterostructures: Establishing The Technology For Magnetic Photonic Crystal Fabrication, Mikhail Vasiliev, P.C. Wo, Kamal Alameh, Paul Munroe, Zonghan Xie, V.A. Kotov, V.I. Burkov
Microstructural Characterization Of Sputtered Garnet Materials And All-Garnet Magnetic Heterostructures: Establishing The Technology For Magnetic Photonic Crystal Fabrication, Mikhail Vasiliev, P.C. Wo, Kamal Alameh, Paul Munroe, Zonghan Xie, V.A. Kotov, V.I. Burkov
Mikhail Vasiliev
We have established a set of technologies for the deposition and annealing of magneto-optic ferrite and paramagnetic garnets, as well as multilayer nanostructures which are based on these materials, for use in magnetic photonic crystals. Transmission electron microscope analysis has been performed to investigate the structure of both amorphous and crystallized garnet layers, nanocrystallites and layer interfaces within all-garnet heterostructures.
Magnetic Photonic Crystals: 1-D Optimization And Applications For The Integrated Optics Devices, Mikhail Vasiliev, Kamal E. Alameh, Vladimir I. Belotelov, Vyacheslav A. Kotov, Anotoly K. Zvezdin
Magnetic Photonic Crystals: 1-D Optimization And Applications For The Integrated Optics Devices, Mikhail Vasiliev, Kamal E. Alameh, Vladimir I. Belotelov, Vyacheslav A. Kotov, Anotoly K. Zvezdin
Mikhail Vasiliev
The optimization of multilayer one-dimensional (1-D) magnetophotonic crystals (MPCs) with multiple phase shifts, enabling their design to be tailored to practical photonics applications, is reported. The properties of sample optimized structures suitable for application in infrared intensity modulators are discussed. A novel scheme of high-resolution magnetic field sensing using MPCs is proposed. The effect of material absorption on spectral properties is shown.
Modification Of Bi:Yig Film Properties By Substrate Surface Ion Pre-Treatment, A. Shaposhnikov, A. Prokopov, A. Karavainikov, V. Berzhansky, T. Mikhailova, V. Kotov, D. Balabanov, I. Sharay, O. Salyuk, Mikhail Vasiliev, V. Golub
Modification Of Bi:Yig Film Properties By Substrate Surface Ion Pre-Treatment, A. Shaposhnikov, A. Prokopov, A. Karavainikov, V. Berzhansky, T. Mikhailova, V. Kotov, D. Balabanov, I. Sharay, O. Salyuk, Mikhail Vasiliev, V. Golub
Mikhail Vasiliev
The effect of a controlled ion beam pre-treatment of (1 1 1)-oriented Gd3Ga5O12 substrates on the magneto-optical properties and surface morphology of the ultrathin bismuth-substituted yttrium–iron garnet films with a composition Bi2.8Y0.2Fe5O12 was studied. It has been shown that the observed sign inversion of magneto-optical effects (Faraday rotation and magnetic circular dichroism) observed in films that were deposited on the GGG substrate pre-treated by 1 keV and 4 keV Ar+ ion beams is a result of the substrate surface amorphization caused by the ion bombardment.
Multipartite Entanglement In A Discrete Magnetic Bands Magnetic Lattice, Ahmed Abdelrahman, Peter Hannaford, Mikhail Vasiliev, Kamal Alameh
Multipartite Entanglement In A Discrete Magnetic Bands Magnetic Lattice, Ahmed Abdelrahman, Peter Hannaford, Mikhail Vasiliev, Kamal Alameh
Mikhail Vasiliev
An asymmetric multi-quantum state magnetic lattice is proposed to host entangled system formed by using Bose Einstein Condensate. Discrete magnetic bands magnetic lattice is devised to locate a controllable long-range entanglement of a many qubits well separated in space. Confinement of the system may improve the condition for long-range entanglement.
Design Of Reconfigurable Optical Interconnects Employing Opto-Vlsi Processors, Roger Jeffery, Kamal Alameh, Mikhail Vasiliev
Design Of Reconfigurable Optical Interconnects Employing Opto-Vlsi Processors, Roger Jeffery, Kamal Alameh, Mikhail Vasiliev
Mikhail Vasiliev
We investigate the design and performance of a reconfigurable optical interconnect structure based on vertical-cavity surface-emitting lasers (VCSEL), Opto-VLSI processors and photodetector arrays. We optimise a proof-of-concept 3-VCSEL-element structure that eliminates crosstalk caused by unwanted diffracted optical beams and show that a bit error role (BER) of 10'17 is feasible at 3.2 Gbps for each channel.
High-Performance Thin-Film Garnet Materials For Magneto-Optic And Nanophotonic Applications., Mikhail Vasiliev, Mohammad Nur E Alam, Viacheslav Kotov, Kamal Alameh
High-Performance Thin-Film Garnet Materials For Magneto-Optic And Nanophotonic Applications., Mikhail Vasiliev, Mohammad Nur E Alam, Viacheslav Kotov, Kamal Alameh
Mikhail Vasiliev
Since the 1960's, Magneto-optic (MO) garnet materials have been studied extensively. These materials can possess world-record MO performance characteristics in terms of Faraday rotation and optical quality. Among the rear-earth-doped garnets, the Bi-substituted iron garnet is the best candidate for use as a functional material in different integrated-optics, imaging/image processing applications and also in forward-looking applications e.g. the design of metamaterials with non-reciprocal properties. We have established a set of technologies for fabricating ferrimagnetic garnet films of type (BiDy)3(FeGa)5O12 and also garnet-oxide nanocomposite (BiDy)3(FeGa)5O12 : Bi2O3 layers possessing record-high MO quality across the visible spectral range using RF-magnetron sputtering and …
Effect Of Oblique Light Incidence On Magnetooptical Properties Of One-Dimensional Photonic Crystals, Mikhail Vasiliev, Vladimir Belotelov, Andrey Kalish, Vyacheslav Kotov, Anotoly Zvezdin, Kamal Alameh
Effect Of Oblique Light Incidence On Magnetooptical Properties Of One-Dimensional Photonic Crystals, Mikhail Vasiliev, Vladimir Belotelov, Andrey Kalish, Vyacheslav Kotov, Anotoly Zvezdin, Kamal Alameh
Mikhail Vasiliev
We have investigated the magnetooptical properties of one-dimensional magnetic photonic crystals for the case of oblique light incidence. We developed a theoretical model based on the transfer matrix approach. We found several new effects such as transmittance resonance peak shift versus external magnetic field and the Faraday effect dependence on the incidence angle.We discuss several possible one-dimensional magnetic photonic crystals applications for the optical devices.
Microstructured Arrayed Microfluidic Waveguide Structure For Infrared Radiation Focusing And Transfer, Paul B. Laursen, Kamal Alameh, Mikhail Vasiliev, Nicholas C. Elliott
Microstructured Arrayed Microfluidic Waveguide Structure For Infrared Radiation Focusing And Transfer, Paul B. Laursen, Kamal Alameh, Mikhail Vasiliev, Nicholas C. Elliott
Mikhail Vasiliev
A microstructured arrayed microfluidic waveguide structure for infrared radiation focussing and transfer is proposed and demonstrated. The arrayed waveguide structure comprises Masterbond UV-curable epoxy UV15 optimised using ZEMAX optical design software to achieve high efficiency of heat capture through far-infrared light focussing and subsequent absorption of the radiation on a centralised fluid medium. A high degree of alignment of the precision-positioned fluidic microchannels with the symmetry axes and the focal plane locations of the cylindrical microlens array is demonstrated, which maximises the efficiency of absorption of the incident IR light energy within the moving fluid. Observation of ink flows through …
Experimental Investigation Of Magnetic Circular Dichroism Spectrum And Stress Induced Optical Activity In A Single-Defect Photonic Crystal, Mikhail Vasiliev, Kamal Alameh, Vladimir I. Burkov, V. V. Koledov, Viacheslav A. Kotov, V. G. Shavrov, Anotoly K. Zvezdin
Experimental Investigation Of Magnetic Circular Dichroism Spectrum And Stress Induced Optical Activity In A Single-Defect Photonic Crystal, Mikhail Vasiliev, Kamal Alameh, Vladimir I. Burkov, V. V. Koledov, Viacheslav A. Kotov, V. G. Shavrov, Anotoly K. Zvezdin
Mikhail Vasiliev
Experimental investigation results for the magnetic circular dichroism spectrum (MCD) of a photonic crystal (PC) are presented. We found that in the vicinity of the transmission peak within the photonic bandgap and also near the bandgap edges, the circular dichroism is measurable even in the absence of any applied magnetic field. The application of magnetic field leads to generating an additional MCD signal measurable at the wavelengths near the “defect mode” transmittance line.
Garnet Multilayer Thin Film Structure With Magnetostatically-Altered And Improved Magnetic Properties Prepared By Rf Magnetron Sputtering, Mohammad Nur-E-Alam, Mikhail Vasiliev, Viacheslav Kotov, Kamal Alameh
Garnet Multilayer Thin Film Structure With Magnetostatically-Altered And Improved Magnetic Properties Prepared By Rf Magnetron Sputtering, Mohammad Nur-E-Alam, Mikhail Vasiliev, Viacheslav Kotov, Kamal Alameh
Mikhail Vasiliev
We prepare an all-garnet multilayer film structure by sandwiching a magneto-soft garnet material in between two magneto-hard garnet materials with high bismuth substitution levels using RF magnetron sputtering technique and investigate the microstructure and the effects of magnetostatic inter-layer coupling on magnetic properties. Both types of the Bi-substituted magneto-optic garnet materials used possess excellent optical, magnetic and magneto-optical properties suitable for the application in different new and emerging technologies in optics and photonics. Garnet layers of composition type Bi2Dy1Fe4Ga1O12 have strong perpendicular magnetic anisotropy and Bi1.8Lu1.2Fe3.6Al1.4O12 magneto-soft layer features magnetization behavior similar to that of in-plane magnetized films. The all-garnet …
Magneto-Optical Visualisation For High-Resolution Forensic Data Recovery Using Advanced Thin Film Nano-Materials, M Nur-E-Alam, Mikhail Vasiliev, Kamal Alameh, Craig Valli
Magneto-Optical Visualisation For High-Resolution Forensic Data Recovery Using Advanced Thin Film Nano-Materials, M Nur-E-Alam, Mikhail Vasiliev, Kamal Alameh, Craig Valli
Mikhail Vasiliev
We develop and characterise new high-performance nano-engineered magneto-optic materials for use in laser-microscopy- based magnetic field visualisers featuring high sensitivity and resolution, low cost and small size. This type of visualisers will make it possible for forensic experts to recover erased data previously stored in high- and ultrahigh-density magnetic disks and hard disk drives.
Magnetic Heterostructures With Low Coercivity For High-Performance Magneto-Optic Devices, V. Kotov, A. Popkov, S. Soloviev, Mikhail Vasiliev, Kamal Alameh, Mohammad Alam, D. Balabanov
Magnetic Heterostructures With Low Coercivity For High-Performance Magneto-Optic Devices, V. Kotov, A. Popkov, S. Soloviev, Mikhail Vasiliev, Kamal Alameh, Mohammad Alam, D. Balabanov
Mikhail Vasiliev
In this work, we analyse the method of forming magneto-optically active heterostructures based on magnetic layers with different magnetic properties. Layers of one type possess a high effective constant of uniaxial magnetic anisotropy for which the condition is fulfilled, where Ku is the constant of uniaxial magnetic anisotropy and is the demagnetizing energy, and layers of the second type used possess in-plane or quasi-in-plane magnetization, in which the condition holds true. The layers of the first type, which we refer to as layers of positive effective uniaxial magnetic anisotropy, may have the composition Bi2Dy1Fe4Ga1O12 and the layers of second type …
Technological Challenges Of 1-Dimensional Magnetic Photonic Crystals, Mikhail Vasiliev, Kamal Alameh, Dmitry E. Balabanov, Vladimir I. Burkov, V. V. Koledov, Viacheslav A. Kotov, V. G. Shavrov, Anotoly K. Zvezdin
Technological Challenges Of 1-Dimensional Magnetic Photonic Crystals, Mikhail Vasiliev, Kamal Alameh, Dmitry E. Balabanov, Vladimir I. Burkov, V. V. Koledov, Viacheslav A. Kotov, V. G. Shavrov, Anotoly K. Zvezdin
Mikhail Vasiliev
Visible-region magnetic photonic crystals (MPC) designed for higher-order bandgap operation have been proposed to overcome the technological restrictions originating from the strong thickness dependency of the individual magnetic layer properties observed in MPC structures.
Nano-Engineered High-Performance Magneto-Optic Garnet Materials, Mohammad Nur-E-Alam, Mikhail Vasiliev, Viacheslav Kotov, Kamal Alameh
Nano-Engineered High-Performance Magneto-Optic Garnet Materials, Mohammad Nur-E-Alam, Mikhail Vasiliev, Viacheslav Kotov, Kamal Alameh
Mikhail Vasiliev
No abstract provided.
The Properties Of Nanocomposite (Bidy)3(Fega)5o12:Bi2o3 Magneto-Optic Garnet Films For Applications In Nanophotonics, Ultrafast Switching And Integrated Optoelectronics , Mikhail Vasiliev, Mohammad Nur E Alam, Viacheslav Kotov, Kamal Alameh
The Properties Of Nanocomposite (Bidy)3(Fega)5o12:Bi2o3 Magneto-Optic Garnet Films For Applications In Nanophotonics, Ultrafast Switching And Integrated Optoelectronics , Mikhail Vasiliev, Mohammad Nur E Alam, Viacheslav Kotov, Kamal Alameh
Mikhail Vasiliev
We investigate the properties and applications of newly-developed RF-sputtered nano-composites with record-high magneto-optic quality (exceeding 25° at 532 nm and 42° at 635 nm). Bi-substituted dysprosium-gallium iron garnet layers with excess co-sputtered bismuth oxide content are demonstrated to possess very attractive optical and magnetic properties, which makes them suitable for novel magneto-optic and nanophotonic applications.
Growth, Characterisation, And Properties Of Bi1.8lu1.2fe3.6al1.4o12 Garnet Films Prepared Using Two Different Substrate Temperatures, Mohammad Alam, Mikhail Vasiliev, Kamal Alameh
Growth, Characterisation, And Properties Of Bi1.8lu1.2fe3.6al1.4o12 Garnet Films Prepared Using Two Different Substrate Temperatures, Mohammad Alam, Mikhail Vasiliev, Kamal Alameh
Mikhail Vasiliev
We prepare highly Bismuth substituted iron garnet of composition type Bi1.8Lu1.2Fe3.6Al1.4O12 by using low and high substrate temperatures (250°C and 680°C) during the deposition process inside the vacuum chamber of RF magnetron sputtering system. The crystallisation process of this garnet type thin film materials are performed by means of optimised high temperature oven annealing process and conduct several characterisation techniques to obtain and evaluate their properties. All the optimally annealed samples possess very promising and attractive properties. Comparatively low coercive force (below 15 Oe) is achieved in garnet films prepared at high substrate temperature of 680°C, simultaneously with high MO …
Rf Magnetron Sputtered (Bidy)3(Fega)5o12:Bi2o3 Composite Garnet-Oxide Materials Possessing Record Magneto-Optic Quality In The Visible Spectral Region, Mikhail Vasiliev, Mohammad Alam, V.A. Kotov, Kamal Alameh, V.I. Belotelov, V.I. Burkov, A.K. Zvezdin
Rf Magnetron Sputtered (Bidy)3(Fega)5o12:Bi2o3 Composite Garnet-Oxide Materials Possessing Record Magneto-Optic Quality In The Visible Spectral Region, Mikhail Vasiliev, Mohammad Alam, V.A. Kotov, Kamal Alameh, V.I. Belotelov, V.I. Burkov, A.K. Zvezdin
Mikhail Vasiliev
Bismuth-substituted iron garnets are considered to be the most promising magneto-optical materials because of their excellent optical transparency and very high magneto-optical figures of merit in the near-infrared spectral region. However, the practical application of garnets in the visible and short-wavelength infrared parts of spectrum is currently limited, due to their very high optical absorption (especially in sputtered films) in these spectral regions. In this paper, we identify the likely source of excess absorption observed in sputtered garnet films in comparison with epitaxial layers and demonstrate (Bi,Dy)(3)(Fe,Ga)(5)O(12): Bi(2)O(3) composites possessing record MO quality in the visible region.
Microstructured Arrayed Microfluidic Waveguide Structure For Infrared Radiation Focusing And Transfer, Paul Laursen, Kamal Alameh, Mikhail Vasiliev, Nicholas Elliot
Microstructured Arrayed Microfluidic Waveguide Structure For Infrared Radiation Focusing And Transfer, Paul Laursen, Kamal Alameh, Mikhail Vasiliev, Nicholas Elliot
Mikhail Vasiliev
No abstract provided.