OKO guide to adaptive optics
... represented as linear systems, so that the adaptive optical system can be controlled within the framework of traditional linear control theory. There are several DM types:: • Membrane DM [2, 3] are formed by a thin membrane, deformed by an array of electrostatic or magnetic actuators. • Bimorph DM [ ...
... represented as linear systems, so that the adaptive optical system can be controlled within the framework of traditional linear control theory. There are several DM types:: • Membrane DM [2, 3] are formed by a thin membrane, deformed by an array of electrostatic or magnetic actuators. • Bimorph DM [ ...
Development of a process for characterization of Nd:YAG crystals
... million during 2001. Even in the uncertain economy, demand for lasers is expected to grow. According to current estimates, the non-diode laser market will reach $2 billion in the year 2002 (Kincade and Anderson, 2002). The essential component found in a Nd:YAG laser is the crystal responsible for th ...
... million during 2001. Even in the uncertain economy, demand for lasers is expected to grow. According to current estimates, the non-diode laser market will reach $2 billion in the year 2002 (Kincade and Anderson, 2002). The essential component found in a Nd:YAG laser is the crystal responsible for th ...
1 - Foundation for Research and Technology
... compensating metamaterial losses by introducing gain. In our corresponding design studies, we have considered SRR on top of a thin gain layer. We using electron-beam lithography have also fabricated many corresponding structures. Various gain layers are available to us from cooperation partner, i.e. ...
... compensating metamaterial losses by introducing gain. In our corresponding design studies, we have considered SRR on top of a thin gain layer. We using electron-beam lithography have also fabricated many corresponding structures. Various gain layers are available to us from cooperation partner, i.e. ...
Holographic Optical Beam-Steering (HOBS)
... (lasercom). Lasercom is superior to other methods of wireless communication with respect to data transfer rates and transmission security because it is very difficult to jam the beam or intercept data [Cadogan and Mulholland 1996; Henniger and Wilfert 2010][Ghuman and Willebrand 2002, pg. 2,5][Majum ...
... (lasercom). Lasercom is superior to other methods of wireless communication with respect to data transfer rates and transmission security because it is very difficult to jam the beam or intercept data [Cadogan and Mulholland 1996; Henniger and Wilfert 2010][Ghuman and Willebrand 2002, pg. 2,5][Majum ...
Optical Parametric Processes with Femtosecond
... Third Harmonic Generation in a Micro-Structured BBO Crystal ............................................. 65 4.1. Introduction ............................................................................................................................ 65 4.2. The Materials Micro-Processing Laborat ...
... Third Harmonic Generation in a Micro-Structured BBO Crystal ............................................. 65 4.1. Introduction ............................................................................................................................ 65 4.2. The Materials Micro-Processing Laborat ...
Adaptive Control of Ultrashort Laser Pulses for
... Curiosity and the desire to understand the world around them is one of the most valuable human traits that has helped to discover fundamental laws and to develop basic techniques to control fundamental processes. After mastering the laws of classical mechanics at the end of the 19th century, however ...
... Curiosity and the desire to understand the world around them is one of the most valuable human traits that has helped to discover fundamental laws and to develop basic techniques to control fundamental processes. After mastering the laws of classical mechanics at the end of the 19th century, however ...
The Optical Cavity
... may assume it can is adefine collimated (slowly diverging) the intensity that stays in the cavity one round trip. the If thetext two mirrors have reflectanc beam with a diameter of 1.2 mm. Using theafter analysis from on Gaussian reflection coefficients) R1,2 , for example, then the survival probabili ...
... may assume it can is adefine collimated (slowly diverging) the intensity that stays in the cavity one round trip. the If thetext two mirrors have reflectanc beam with a diameter of 1.2 mm. Using theafter analysis from on Gaussian reflection coefficients) R1,2 , for example, then the survival probabili ...
Numerical techniques for Fresnel diffraction in computational
... real object can be reproduced by a hologram. Thus viewing a hologram is no different than viewing the actual object which it represents. In the comprehension of a three-dimensional (3D) scene, the human visual system relies on many depth cues, all of which can be reproduced by holography. To better ...
... real object can be reproduced by a hologram. Thus viewing a hologram is no different than viewing the actual object which it represents. In the comprehension of a three-dimensional (3D) scene, the human visual system relies on many depth cues, all of which can be reproduced by holography. To better ...
Fabrication of Diffractive Lenses Soft X-ray with Resolution
... Since the discovery of x-rays, it was clear they could be an extremely useful tool for imaging. However, the impossibility of using conventional optics was also obvious from the very beginning. Without appropriate focusing devices, x-ray microscopy remained as a speculative subject for more than hal ...
... Since the discovery of x-rays, it was clear they could be an extremely useful tool for imaging. However, the impossibility of using conventional optics was also obvious from the very beginning. Without appropriate focusing devices, x-ray microscopy remained as a speculative subject for more than hal ...
Basic Wavefront Aberration Theory for Optical Metrology
... defined as shown in Fig. 4b. Polar coordinates are used for most of the aberration formulas, because the Seidel aberrations and Zernike coefficients are circularly symmetric. The relationship between rectangular and polar coordinates as used in this chapter is shown in Fig. 4b. Angles increase in th ...
... defined as shown in Fig. 4b. Polar coordinates are used for most of the aberration formulas, because the Seidel aberrations and Zernike coefficients are circularly symmetric. The relationship between rectangular and polar coordinates as used in this chapter is shown in Fig. 4b. Angles increase in th ...
Modern Optical Engineering
... course of study and that in the whole country there were less than a dozen potential employers for a graduate optical engineer. Despite the Dean’s gloom-and-doom prognostication, the future turned out amazingly well, and I have thoroughly enjoyed the practice of optical engineering and the people as ...
... course of study and that in the whole country there were less than a dozen potential employers for a graduate optical engineer. Despite the Dean’s gloom-and-doom prognostication, the future turned out amazingly well, and I have thoroughly enjoyed the practice of optical engineering and the people as ...
Modeling Moiré: Visual Beat Effects in Nature and Optical Metrology
... mathematical computing software [14]. Pursuant to the two different aspects of this work, this paper is divided into two major sections: the first describes the moiré simulations that were created (§2), and the second discusses the collimation test instrument that was set up, the experimental resul ...
... mathematical computing software [14]. Pursuant to the two different aspects of this work, this paper is divided into two major sections: the first describes the moiré simulations that were created (§2), and the second discusses the collimation test instrument that was set up, the experimental resul ...
Light manipulation with encoded plasmonic nanostructures Chenglong Zhao , Jiasen Zhang
... metal film can radiatively leak through the film and the substrate, and finally be collected by an oil-immerse lens with high numerical aperture. It allows fast mapping the SPP near-field in the way of far-field detection, compared to other time-consuming scanning techniques, such as near-field scan ...
... metal film can radiatively leak through the film and the substrate, and finally be collected by an oil-immerse lens with high numerical aperture. It allows fast mapping the SPP near-field in the way of far-field detection, compared to other time-consuming scanning techniques, such as near-field scan ...
Customer-Made 3×3 Polymer Optical Fiber Splitter Based on Green
... that the excessive loss is high enough where most of the loss exceeds 10 dB. It can be considered as a great loss for a communication system in which the normal loss of POF is about 1 dB m−1. This excessive loss caused by light through the POF splitter that is not refracted out entirely. This may be ...
... that the excessive loss is high enough where most of the loss exceeds 10 dB. It can be considered as a great loss for a communication system in which the normal loss of POF is about 1 dB m−1. This excessive loss caused by light through the POF splitter that is not refracted out entirely. This may be ...
New Approaches to Gyroscopic Lasers
... gain medium for the gyroscope. Both neodymium doped and erbium ytterbium co-doped phosphate glass lasers were constructed. Initially linear cavity designs were constructed to test the suitability of the gain media. Both laser systems employed longitudinal laser diode pumping. Thirty six perimeter ri ...
... gain medium for the gyroscope. Both neodymium doped and erbium ytterbium co-doped phosphate glass lasers were constructed. Initially linear cavity designs were constructed to test the suitability of the gain media. Both laser systems employed longitudinal laser diode pumping. Thirty six perimeter ri ...
The Strontium Optical Lattice Clock
... One of the most well-developed applications of coherent interaction with atoms is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressiv ...
... One of the most well-developed applications of coherent interaction with atoms is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressiv ...
The Strontium Optical Lattice Clock
... One of the most well-developed applications of coherent interaction with atoms is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressiv ...
... One of the most well-developed applications of coherent interaction with atoms is atomic frequency standards and clocks. Atomic clocks find significant roles in a number of scientific and technological settings. State-of-the-art, laser-cooled, Cs-fountain microwave clocks have demonstrated impressiv ...
Lithium Niobate Microphotonic Modulators
... First and foremost I would like to offer my entire family the gratitude that words alone cannot describe for the constant love, giving, sharing, support, and encouragement that has defined much of who I am today. They are all truly the backbone of my life. To my dad whom I owe so much for the years ...
... First and foremost I would like to offer my entire family the gratitude that words alone cannot describe for the constant love, giving, sharing, support, and encouragement that has defined much of who I am today. They are all truly the backbone of my life. To my dad whom I owe so much for the years ...
RESONATOR OPTICS
... The frequency selectivity of an optical resonator makes it useful as an optical filter or spectrum analyzer. Its most important use, however, is as a “container” within which laser light is generated. The laser is an optical resonator containing a medium that amplifies light. The resonator determine ...
... The frequency selectivity of an optical resonator makes it useful as an optical filter or spectrum analyzer. Its most important use, however, is as a “container” within which laser light is generated. The laser is an optical resonator containing a medium that amplifies light. The resonator determine ...
High Harmonic Generation for Coherent Diffractive Imaging
... where only a few harmonic orders of short wavelength or a dominant photon energy are required and any optics in the harmonic beam path, such as reflection gratings, is undesirable. The novel and flexible approach of spectral extraction based on the application of the maximum entropy method to the in ...
... where only a few harmonic orders of short wavelength or a dominant photon energy are required and any optics in the harmonic beam path, such as reflection gratings, is undesirable. The novel and flexible approach of spectral extraction based on the application of the maximum entropy method to the in ...
NGAO NGS WFS design review - Caltech Optical Observatories
... • 5x5 mode of operation – to simply the size of moving parts while facilitating the two pupil sampling modes, we use the same collimator and post-lenslet relay for both the 63 and 5 sub-ap mode of operation. – We choose 48 pixels/sub-aperture (instead of 50 pixels/sub-ap) to enable 4x4 binned pixel/ ...
... • 5x5 mode of operation – to simply the size of moving parts while facilitating the two pupil sampling modes, we use the same collimator and post-lenslet relay for both the 63 and 5 sub-ap mode of operation. – We choose 48 pixels/sub-aperture (instead of 50 pixels/sub-ap) to enable 4x4 binned pixel/ ...
Low-Temperature Bonding for Silicon-Based Micro
... diagnosis and monitoring of human diseases using autofluoresnce or fluorescence lifetime imaging [1]. Another example is a bioanalytical sensing system that allows detection and monitoring of Escherichia coli cell in food and water [2]. One of the challenges for such systems is to integrate optical, ...
... diagnosis and monitoring of human diseases using autofluoresnce or fluorescence lifetime imaging [1]. Another example is a bioanalytical sensing system that allows detection and monitoring of Escherichia coli cell in food and water [2]. One of the challenges for such systems is to integrate optical, ...
Ans: Optical Fiber Communication System
... An optical fiber (or optical fiber) is a flexible, transparent fiber made of extruded glass (silica) or plastic, slightly thicker than a human hair. It can function as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber. The field of applied science and engineering conc ...
... An optical fiber (or optical fiber) is a flexible, transparent fiber made of extruded glass (silica) or plastic, slightly thicker than a human hair. It can function as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber. The field of applied science and engineering conc ...
Wavefront Aberration - University of Arizona
... defined as shown in Fig. 4b. Polar coordinates are used for most of the aberration formulas, because the Seidel aberrations and Zernike coefficients are circularly symmetric. The relationship between rectangular and polar coordinates as used in this chapter is shown in Fig. 4b. Angles increase in th ...
... defined as shown in Fig. 4b. Polar coordinates are used for most of the aberration formulas, because the Seidel aberrations and Zernike coefficients are circularly symmetric. The relationship between rectangular and polar coordinates as used in this chapter is shown in Fig. 4b. Angles increase in th ...
Simulation of Fiber Fuse Phenomenon in Single
... damaged, and the damaged fiber cannot be used in an optical communication system. The damage is made manifest by periodic or nonperiodic bullet-shaped cavities left in the core [7]–[13]. It was found that molecular oxygen was released and remained in the cavities while maintaining high pressure (abo ...
... damaged, and the damaged fiber cannot be used in an optical communication system. The damage is made manifest by periodic or nonperiodic bullet-shaped cavities left in the core [7]–[13]. It was found that molecular oxygen was released and remained in the cavities while maintaining high pressure (abo ...
Confocal microscopy
Confocal microscopy is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of adding a spatial pinhole placed at the confocal plane of the lens to eliminate out-of-focus light. It enables the reconstruction of three-dimensional structures from the obtained images. This technique has gained popularity in the scientific and industrial communities and typical applications are in life sciences, semiconductor inspection and materials science.