A5017010000- Optical measurement and interference techniques
- Advanced Measurement and Metrology Techniques
- ZnO doping and properties
- Surface Roughness and Optical Measurements
- Gas Sensing Nanomaterials and Sensors
- Photonic and Optical Devices
- Microwave Engineering and Waveguides
- Adaptive optics and wavefront sensing
- Semiconductor Lasers and Optical Devices
- Optical Coatings and Gratings
- Transition Metal Oxide Nanomaterials
- Thin-Film Transistor Technologies
- Laser Material Processing Techniques
- Scientific Measurement and Uncertainty Evaluation
- Advanced Frequency and Time Standards
- Geophysics and Sensor Technology
- Optical Systems and Laser Technology
- Pulsars and Gravitational Waves Research
- Advanced Fiber Optic Sensors
- Random lasers and scattering media
- Sparse and Compressive Sensing Techniques
- Nanofabrication and Lithography Techniques
- Ga2O3 and related materials
- Structural Health Monitoring Techniques
- Cybersecurity and Information Systems
National Institute for Laser Plasma and Radiation Physics
2015-2024
North Carolina State University
2022
Plasma (Russia)
2011
The University of Western Australia
2003-2004
In lieu of the traditional method data encryption using Hadamard matrices we here propose a which change in part mathematical with physical means, namely transform Fourier lens. The has lower power compression, but advantage encoding compensated for this disadvantage. Our approach two parts, an encryption-compression stage, and decryption-decompression are supposed to be complementary coupled by means computer controls both experiments uses output stage as input stage.
In this work, rapid thermal annealing (RTA) was applied to indium tin oxide (ITO) films in ambient atmosphere, resulting significant improvements of the quality ITO that are commonly used as conductive transparent electrodes for photovoltaic structures. Starting from a single sintered target (purity 99.95%), thin predefined thickness (230 nm, 300 nm and 370 nm) were deposited at room temperature by radio-frequency magnetron sputtering (rfMS). After deposition, subjected RTA process 575 °C...
The article present an ultralow frequency passive vibration isolation device as part of the preisolation stage for Australian International Gravitational Observatory (AIGO). This isolator is based on Roberts linkage and simulates a very long radius conical pendulum to provide two-dimensional isolation. It designed second horizontal component preisolator it will support remaining four stages AIGO chain. A description together with theoretical model its measured performance are presented. With...
Advanced laser interferometer detectors utilizing more than 100 W of power and with ∼106 circulating present many technological problems. The Australian Consortium for Interferometric Gravitational Astronomy (ACIGA) is developing a high research facility in Gingin, north Perth, Western Australia, which will test techniques the next generation interferometers. In particular it thermal lensing compensation control strategies optical cavities spring effects parametric instabilities may major...
The increasing amount of data generated by space applications poses several challenges due to limited resources available onboard: power, memory, computation, rate. In this paper, we propose Compressed Sensing (CS) as the key tool face those via compressive imaging. This signal processing technique, only recently applied applications, dramatically simplifies image acquisition featuring native compression/encryption and enabling onboard analysis, allowing design simpler lighter optical...
Low dimensions of the nanostructured thin films are essential in applications miniaturized optical systems. Noble metal different thicknesses (4–10 nm) were obtained by radio frequency magnetron sputtering (rfMS) with controlled morphology. They exhibit behavior useful to metamaterial structures possible space industry. Optimized deposition conditions led a good surface morphology, consisting nanoparticles between 6 nm and 11 roughness 0.7 1.5 nm, determined atomic force microscopy...
Abstract The paper introduces a method for the measurement of monochromatic light using geometric phase shift in polarizing interferometer and applying Fourier transform spectroscopy method. This is achieved with no mirror displacement or change actual optical path difference. Our uses rotation half-wave plate increments on order degrees arc, which easier to control reliable reproduce. approach provides flexibility choosing spectral range novel way performing such measurements. It...
Single-pixel camera (SPC) is an alternative architecture for imaging systems that emerged as application of the compressive sensing theory. The SPC's distinctive feature single detector measures linear combinations pixels instead in array cameras. measurements are obtained by projecting scene on a spatial light modulator (SLM), other component SPC architecture. This paper discusses problem resolution SPC. We show terms point spread function (PSF), model similar to except fact role taken over...
Compressive Sensing refers to the acquisition in compressed form of sparse signals. One CS applications is Single Pixel Camera that rethinks conventional imaging systems. The key part camera a Spatial Light Modulator (SLM), which provides mechanism for taking arbitrary measurements scene. non-uniform sampling (NUS) scenario offers simple procedure select random samples from scene, instead projections. This paper analyses performance using NUS case two categories samples: randomly distributed...
In this paper a Fourier transform digital holography experimental arrangement is presented. It actually hybrid arrangement, half analog. The hologram was constructed using the analogous means of so called lensless configuration. recorded digitally by camera with large CCD array in stead recording medium. image analyzed computer and original reconstructed discrete transform.
A new approach to metrology for the range below 100 nm is based on large fiducial grids optical encoders produced by interference / lithography. Since encoder can only be as accurate grating scale, advance in this area depends availability of plates nanometer accuracy. Various commercially available or home made holographic gratings were checked using interferometric methods and compared with AFM device results. The budget errors was analyzed necessary improvements measuring technology are presented.
In this paper, we investigate the use of radiation pressure force as test mass actuation for laser interferometer gravitational wave detectors. It is shown that it viable to provide control on masses frequencies above ~0.2 Hz in high performance vibration isolation systems. A very low mass, frequency resonator has been used verify not corrupted by other forces such due radiometer effects.
In this paper we present some results regarding undoped and doped ZnO thin films deposited on various substrates like glass, silicon kapton by rf magnetron sputtering. The influence of the amount aluminum as well usage different final photovoltaic properties is studied. For this, structural‐morphological optical investigations are conducted. It was found that three important factors must be taken into account for adjusting desired application intended films. These are: deposition conditions,...