Experimental investigation of the propagation properties of bloch
... estimated imaginary part of the refractive indexes of SiO2 and SiNx are approximately 10−4 [23]. The values are selected to match with experimental investigations. The periodicity of the multilayer is terminated by a 50 nm-thick terminating layer (top layer) of SiNx. The thickness of the top layer d ...
... estimated imaginary part of the refractive indexes of SiO2 and SiNx are approximately 10−4 [23]. The values are selected to match with experimental investigations. The periodicity of the multilayer is terminated by a 50 nm-thick terminating layer (top layer) of SiNx. The thickness of the top layer d ...
Coatings, Filters, and Surface Finishes
... layer of less active metal (e.g., copper, Inconel, or nickel) and a coat of paint. On the other hand, if silver is protected from sulfides in the air, it lasts for months, and it can be applied chemically in the lab, which is sometimes a very important property. Gold is the best mirror coating in th ...
... layer of less active metal (e.g., copper, Inconel, or nickel) and a coat of paint. On the other hand, if silver is protected from sulfides in the air, it lasts for months, and it can be applied chemically in the lab, which is sometimes a very important property. Gold is the best mirror coating in th ...
full text pdf
... gions near their surfaces at specific wavelengths of light, controlled by the nanostructure geometry. The geometry− and size−dependent properties of nanoparticles [10–15] have potential applications in nanophotonics, biophotonics and biomedicine [16–19], near−field scanning optical mi− croscopy [20] ...
... gions near their surfaces at specific wavelengths of light, controlled by the nanostructure geometry. The geometry− and size−dependent properties of nanoparticles [10–15] have potential applications in nanophotonics, biophotonics and biomedicine [16–19], near−field scanning optical mi− croscopy [20] ...
jnr1de7.pdf
... Chapter 1. Introduction 1.1.Introduction The research developed in this thesis is within the framework of optical signal processing, and optical information systems. In particular, our research is focused on color pattern recognition and on the improvement of an optical processor working in real ti ...
... Chapter 1. Introduction 1.1.Introduction The research developed in this thesis is within the framework of optical signal processing, and optical information systems. In particular, our research is focused on color pattern recognition and on the improvement of an optical processor working in real ti ...
Full-Text PDF
... fabrication of advanced nanostructured optical devices. Depending on the characteristics of the considered physical system (dimension, materials, timescale, etc.), there are different ways to model the ongoing optical phenomena. For instance, if light wavelength is much smaller of the system dimensi ...
... fabrication of advanced nanostructured optical devices. Depending on the characteristics of the considered physical system (dimension, materials, timescale, etc.), there are different ways to model the ongoing optical phenomena. For instance, if light wavelength is much smaller of the system dimensi ...
design and analysis of variable gain amplifier with
... through fiber for very long distances in the form of laser [1]. An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert system in to an electrical signal automatically. Optical fiber amplifiers provide the amplification of optical signals by effe ...
... through fiber for very long distances in the form of laser [1]. An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert system in to an electrical signal automatically. Optical fiber amplifiers provide the amplification of optical signals by effe ...
ENG165-265.2017 .4
... Y, and Z axes, as well as rotated, enabling more complex shapes with accuracy better than one mil. (this is called CNC plunger EDM) • The spark discharges are pulsed on and off at a high frequency cycle and can repeat 250,000 times per second. Each discharge melts or vaporizes a small area of the wo ...
... Y, and Z axes, as well as rotated, enabling more complex shapes with accuracy better than one mil. (this is called CNC plunger EDM) • The spark discharges are pulsed on and off at a high frequency cycle and can repeat 250,000 times per second. Each discharge melts or vaporizes a small area of the wo ...
Document
... Y, and Z axes, as well as rotated, enabling more complex shapes with accuracy better than one mil. (this is called CNC plunger EDM) • The spark discharges are pulsed on and off at a high frequency cycle and can repeat 250,000 times per second. Each discharge melts or vaporizes a small area of the wo ...
... Y, and Z axes, as well as rotated, enabling more complex shapes with accuracy better than one mil. (this is called CNC plunger EDM) • The spark discharges are pulsed on and off at a high frequency cycle and can repeat 250,000 times per second. Each discharge melts or vaporizes a small area of the wo ...
Fabrication of two-layer integrated phase mask for
... the case of positive resist, the overexposed material is then dissolved away in the postexposure processing. The underexposed region forms a periodic network and acts as a 3D photonic crystal template. For negative photoresists, the underexposed regions can then be selectively removed using a develo ...
... the case of positive resist, the overexposed material is then dissolved away in the postexposure processing. The underexposed region forms a periodic network and acts as a 3D photonic crystal template. For negative photoresists, the underexposed regions can then be selectively removed using a develo ...
FABRICATION OF MICROFLUIDIC STRUCTURES BY LASER
... results in power loss from mode mismatch. Common optical fiber has an approximately Gaussian beam shape, with a 1/e2 radius of 5.2 µm. This is significantly larger than the mode size within ...
... results in power loss from mode mismatch. Common optical fiber has an approximately Gaussian beam shape, with a 1/e2 radius of 5.2 µm. This is significantly larger than the mode size within ...
Fabrication of Cube Beamsplitters for White Light Interferometry
... modulo ambiguity associated with interference periodicity of single laser source systems. This advantage is based on the principle that acceptable fringe visibility only occurs when both arms of the interferometer have matching optical path lengths (OPL) for each wavelength of the broadband light so ...
... modulo ambiguity associated with interference periodicity of single laser source systems. This advantage is based on the principle that acceptable fringe visibility only occurs when both arms of the interferometer have matching optical path lengths (OPL) for each wavelength of the broadband light so ...
Recent Advances in ALON Optical Ceramic
... When compared to conventional glass/plastic laminates used against armor piercing rounds, ALON™ transparent armor provides equivalent protection at half the weight and thickness. Some comparative ballistic results between conventional glass laminates and ALON laminates are shown in Figure 6. These r ...
... When compared to conventional glass/plastic laminates used against armor piercing rounds, ALON™ transparent armor provides equivalent protection at half the weight and thickness. Some comparative ballistic results between conventional glass laminates and ALON laminates are shown in Figure 6. These r ...
Silicon optical modulators - Optoelectronics Research Centre
... So far in this text we have discussed how optical modulators in silicon can vary the refractive index of the material, or how to induce absorption. The latter directly modulates the intensity of a propagating mode, so it is obvious how modulation is achieved in such devices. However, in order to con ...
... So far in this text we have discussed how optical modulators in silicon can vary the refractive index of the material, or how to induce absorption. The latter directly modulates the intensity of a propagating mode, so it is obvious how modulation is achieved in such devices. However, in order to con ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.