We use balanced optical low-coherence interferometry to measure the ultralow light power back-reflected and/or back-scattered by interfaces. Indeed, backscattered from surfaces can be a critical source of noise in interferometric gravitational-wave detectors, such as Laser Interferometer Gravitational-Wave Observatory (LIGO), Virgo, or Space Antenna (LISA), and therefore, it is required charact...

 Oxyfluoride glass ceramics containing CaF2nano-crystals doped with Y3+ ions were prepared by one-step crystallization of SiO2- Al2O3- CaO- CaF2 glasses at different temperatures. X- ray diffraction (XRD) results have revealed that CaF2 was the only precipitated crystalline phase in glass ceramic samples. According to the XRD results, a glass ceramic was selected as the best sample in order to ...

This article discusses details study on crystallization , optical properties of Li-Al-Si-La glass containing nanocrystalline LaF3.and their optical energy gaps. The Urbach energy of glass samples was evaluated. By using (2% mole) Tb the green–blue range emission occurred, while by accumulation 1% mole Gd beside Tb, the indigo emission intensity (418 to 441 nm) increased.

BK7 glass is widely used in various optical instruments as a common ceramic material. However, there are still several difficulties the polishing process due to its material properties. Ultrasonic vibration–assisted (UVAP) for excellent removal few researches on model of UVAP tilted. Therefore, this paper investigates problem. A was established titled column polishing; The pressure distribution...

This paper investigates the potential of a new integrated solar concentrated photovoltaic (CPV) system that uses solo point focus Fresnel lens for multiple multi-junction cells (MJSCs). The proposed comprises an FL concentrator as primary optical element, multi-leg homogeniser secondary element (SOE), plano-concave lens, and four MJSCs. A three-dimensional model this was developed using ray tra...

Amorphous semiconductors are materials with a brilliant prospect for a wide range of optical applications like solar cells, optical sensors, optical devices, and memories. The purpose of the present research was to study the semiconducting optical properties of SiO2-Al2O3-CaF2 and SiO2-Al2O3-BaF2 oxyfluoride...

We propose and demonstrate novel methods that enable simultaneous measurements of the phase index, the group index, and the geometrical thickness of an optically transparent object by combining optical low-coherence interferometer and confocal optics. The low-coherence interferometer gives information relating the group index with the thickness, while the confocal optics allows access to the ph...