BEST OF - Edmund Optics
... VIS-NIR: Our visible/near-infrared broadband anti-reflection coating is specially optimized to yield maximum transmission (>99%) in the near infrared. Telecom-NIR: Our Telecom/near-infrared is a specialized broadband AR coating for popular telecommunications wavelengths from 1200 – 1600nm. UV-AR and ...
... VIS-NIR: Our visible/near-infrared broadband anti-reflection coating is specially optimized to yield maximum transmission (>99%) in the near infrared. Telecom-NIR: Our Telecom/near-infrared is a specialized broadband AR coating for popular telecommunications wavelengths from 1200 – 1600nm. UV-AR and ...
Metamaterials: a new frontier of science and technology Chem. Soc. Rev 40
... respectively. Substituting proper values into eqn (5), we can characterize material properties over a wide frequency range from microwave to optical. For noble metals, op,e is at visible or UV frequency and o0,e is taken as zero under the free electron approximation. This means that the permittivity ...
... respectively. Substituting proper values into eqn (5), we can characterize material properties over a wide frequency range from microwave to optical. For noble metals, op,e is at visible or UV frequency and o0,e is taken as zero under the free electron approximation. This means that the permittivity ...
Refractometry of microscopic objects using digital holography
... the movements of the Becke lines between different focus depths [6]. The oblique illumination method involves a blocking of a part of the illuminating light in a microscope and observation of the “shadows” generated by the object. Whether the “shadow” is on the dark side of the observable area or on ...
... the movements of the Becke lines between different focus depths [6]. The oblique illumination method involves a blocking of a part of the illuminating light in a microscope and observation of the “shadows” generated by the object. Whether the “shadow” is on the dark side of the observable area or on ...
Metamaterials: a new frontier of science and technology Chem. Soc. Rev 40
... respectively. Substituting proper values into eqn (5), we can characterize material properties over a wide frequency range from microwave to optical. For noble metals, op,e is at visible or UV frequency and o0,e is taken as zero under the free electron approximation. This means that the permittivit ...
... respectively. Substituting proper values into eqn (5), we can characterize material properties over a wide frequency range from microwave to optical. For noble metals, op,e is at visible or UV frequency and o0,e is taken as zero under the free electron approximation. This means that the permittivit ...
Optical negative refraction by four-wave mixing in thin metallic nanostructures LETTERS *
... difficult. Here, we report a simple but different scheme to demonstrate experimentally nonlinear negative refraction at optical frequencies using four-wave mixing in nanostructured metal films. The refractive index can be designed at will by simply tuning the wavelengths of the interacting waves, wh ...
... difficult. Here, we report a simple but different scheme to demonstrate experimentally nonlinear negative refraction at optical frequencies using four-wave mixing in nanostructured metal films. The refractive index can be designed at will by simply tuning the wavelengths of the interacting waves, wh ...
Cylindrical adaptive lenses - Durham University Community
... resistance of the control electrode s. The technology of the evaporation of high resistance transparent electrodes allows the production of coatings with sheet resistances up to 16 M/ [6]. For instance, let us consider a cylindrical modal LC lens with a width l=1 mm, thickness of LC layer d = 25 ...
... resistance of the control electrode s. The technology of the evaporation of high resistance transparent electrodes allows the production of coatings with sheet resistances up to 16 M/ [6]. For instance, let us consider a cylindrical modal LC lens with a width l=1 mm, thickness of LC layer d = 25 ...
CHAPTER 5: LIGHT
... 1. Magnifying glass (simple microscope ): A lens acts as a magnifying glass when the object is placed as in case 5 on page 23. i) A magnifying glass consists of a (converging / diverging) lens. ii) The object must be placed at a distance (more than f / same as f / less than f / between f and 2f / mo ...
... 1. Magnifying glass (simple microscope ): A lens acts as a magnifying glass when the object is placed as in case 5 on page 23. i) A magnifying glass consists of a (converging / diverging) lens. ii) The object must be placed at a distance (more than f / same as f / less than f / between f and 2f / mo ...
Enhanced localization of Dyakonov-like surface waves in left
... 共nob , neb兲, i.e., nob ⬍ nm ⬍ neb. Dyakonov waves feature unique properties: they are hybrid waves, i.e., they can not be decoupled into either TE or TM modes, and they only exist for a well-defined range of orientations of the optical axis with respect to the propagation direction, hereafter referr ...
... 共nob , neb兲, i.e., nob ⬍ nm ⬍ neb. Dyakonov waves feature unique properties: they are hybrid waves, i.e., they can not be decoupled into either TE or TM modes, and they only exist for a well-defined range of orientations of the optical axis with respect to the propagation direction, hereafter referr ...
Acousto-Optic Effect and Its use in Signal Processing Abstract 1
... Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal ...
... Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal ...
BASIC THEORY OF PARTIAL COHERENCE
... will be seen to have rather far-reaching implications in the problems of image formation. For most applications, the primary exposing radiation may be safely taken as incoherent. For example, sunlight is coherent only over a distance of approximately 1/20 mm. Thus, even a reconnaissance system which ...
... will be seen to have rather far-reaching implications in the problems of image formation. For most applications, the primary exposing radiation may be safely taken as incoherent. For example, sunlight is coherent only over a distance of approximately 1/20 mm. Thus, even a reconnaissance system which ...
Analysis of Optical Systems I
... In this chapter we shall look at some very useful, and quite simple, techniques for analyzing optical systems. Most of our attention will be directed towards optical systems that have axial symmetry. So, for example, we shall examine various properties of lenses, flat and spherical mirrors, plane-pa ...
... In this chapter we shall look at some very useful, and quite simple, techniques for analyzing optical systems. Most of our attention will be directed towards optical systems that have axial symmetry. So, for example, we shall examine various properties of lenses, flat and spherical mirrors, plane-pa ...
Arbitrary GRIN component fabrication in optically
... not demonstrated index modulation transversely. Transverse index modulation in polymers has been demonstrated, however, these methods are either difficult to fully control, the process is time consuming or is limited in the GRIN profile they can produce. Methods include polymer GRIN lens rod fabrica ...
... not demonstrated index modulation transversely. Transverse index modulation in polymers has been demonstrated, however, these methods are either difficult to fully control, the process is time consuming or is limited in the GRIN profile they can produce. Methods include polymer GRIN lens rod fabrica ...
Negative refraction, subwavelength focusing and beam formation by
... medium. This time we have a right-handed (positive index) PC which is just exhibiting negative refraction. √ The advantage of using the first band is that, since λ > 2 2a, the propagation does not suffer from Bragg reflections inside the PC and a well-defined single beam propagation is guaranteed wi ...
... medium. This time we have a right-handed (positive index) PC which is just exhibiting negative refraction. √ The advantage of using the first band is that, since λ > 2 2a, the propagation does not suffer from Bragg reflections inside the PC and a well-defined single beam propagation is guaranteed wi ...
Pdf - Text of NPTEL IIT Video Lectures
... Let us see this in the ray diagram as we it will be much simpler here, you can see like, we have shown you in the finite corrected optics. Here the objective lens is there, there is a tube length and there is the space between the objective, and tube lens is called infinity focal space or infinity s ...
... Let us see this in the ray diagram as we it will be much simpler here, you can see like, we have shown you in the finite corrected optics. Here the objective lens is there, there is a tube length and there is the space between the objective, and tube lens is called infinity focal space or infinity s ...
Accurate predictive model for twisted nematic liquid crystal devices. Application
... by definition optical, the input signal may be introduced either optically or ...
... by definition optical, the input signal may be introduced either optically or ...
1 Introduction to Optics and Photophysics - Wiley-VCH
... socks and shoes. Such an electric field has a direction not only when it is static, as in the case of the jumper, but also when it is dynamic, as in the case of light. In the latter case, the direction corresponds to the direction of polarization of the light, which is discussed later. Waves, such as ...
... socks and shoes. Such an electric field has a direction not only when it is static, as in the case of the jumper, but also when it is dynamic, as in the case of light. In the latter case, the direction corresponds to the direction of polarization of the light, which is discussed later. Waves, such as ...
Total 3D imaging of phase objects using defocusing microscopy
... theoretical framework, can resolve surface-membranes of RBCs separated by axial distances down to 300 nm. Transparent objects that would be invisible in a standard bright-field optical microscope can turn visible by defocusing the microscope, since the act of defocusing introduces a phase difference ...
... theoretical framework, can resolve surface-membranes of RBCs separated by axial distances down to 300 nm. Transparent objects that would be invisible in a standard bright-field optical microscope can turn visible by defocusing the microscope, since the act of defocusing introduces a phase difference ...
Chiral surface waves supported by biaxial hyperbolic metamaterials ORIGINAL ARTICLE Wen-Long Gao
... explored in applications like super-resolution imaging5–7, biosensing8,9, wave guiding9–11 and photolithography12,13. Recently, it has been shown that by nanostructuring the metal surface, it is possible to modify the dispersion of SPPs or excite the SPPs in a prescribed manner14–19. It has also bee ...
... explored in applications like super-resolution imaging5–7, biosensing8,9, wave guiding9–11 and photolithography12,13. Recently, it has been shown that by nanostructuring the metal surface, it is possible to modify the dispersion of SPPs or excite the SPPs in a prescribed manner14–19. It has also bee ...
infos on Underwater optics theory
... The variations in the ray paths surrounding the image will have, as we shall see, a bad effect on the definition of the subject, particularly the rendition of small details. These notions are not specific to underwater photography: diffusion can be observed whenever there is mist or fog, even when i ...
... The variations in the ray paths surrounding the image will have, as we shall see, a bad effect on the definition of the subject, particularly the rendition of small details. These notions are not specific to underwater photography: diffusion can be observed whenever there is mist or fog, even when i ...
Microscopes - Photonics Research Group
... distance f 9 1 z 9 behind Lob, where f 9 is the back focal length of Lob and z 9 is the optical tube length of the microscope. In general, O9 is an aerial image for which an ocular Loc (or the eyepiece) acts as a magnifier in front of the eye. Since Loc , coupled with the corneal surface and lens of ...
... distance f 9 1 z 9 behind Lob, where f 9 is the back focal length of Lob and z 9 is the optical tube length of the microscope. In general, O9 is an aerial image for which an ocular Loc (or the eyepiece) acts as a magnifier in front of the eye. Since Loc , coupled with the corneal surface and lens of ...
7.1 textbook answers - aiss-science-9
... c Critical angle: The angle of an incident light ray that will cause the light to refract exactly 90° to the normal. Light incident at angles greater than the critical angle will undergo total internal reflection. Light incident at angles less than the critical angle will pass through the interface ...
... c Critical angle: The angle of an incident light ray that will cause the light to refract exactly 90° to the normal. Light incident at angles greater than the critical angle will undergo total internal reflection. Light incident at angles less than the critical angle will pass through the interface ...
Experimental method for reliably establishing the refractive index of
... been shown responsible for the iridescence in the majority of species studied, a rigorous method for reliably characterising the complex refractive indices of each system has largely not been demonstrated. To this end, we initiated this study. In general, when modelling the optics of many-layer syst ...
... been shown responsible for the iridescence in the majority of species studied, a rigorous method for reliably characterising the complex refractive indices of each system has largely not been demonstrated. To this end, we initiated this study. In general, when modelling the optics of many-layer syst ...
1 Basic Optics - Wiley-VCH
... to construct the position of images and their magnification formed by optical instruments. In Section 1.4, we will discuss image formation by optical systems using the concept of light rays. However, they cannot be used to estimate, for example, the ultimate resolution of the instruments since this i ...
... to construct the position of images and their magnification formed by optical instruments. In Section 1.4, we will discuss image formation by optical systems using the concept of light rays. However, they cannot be used to estimate, for example, the ultimate resolution of the instruments since this i ...
- Europhysics News
... reconstructed sections was viewed as if along one axis of the section plane, to provide a side view of the spheres. Viewed from this direction, all spheres lie nearly in the same plane (as the sample geometry requires) and the spheres have again circular profiles. The two spheres that were in contac ...
... reconstructed sections was viewed as if along one axis of the section plane, to provide a side view of the spheres. Viewed from this direction, all spheres lie nearly in the same plane (as the sample geometry requires) and the spheres have again circular profiles. The two spheres that were in contac ...
RADAR CROSS-SECTION STUDIES OF SPHERICAL LENS
... At microwave frequencies the more popular choice for the design of efficient reflectors is a stepped-index Luneburg Lens (LL) with attached metallic spherical cap [2–6]. In this paper we consider the possibility of replacing the relatively-expensive-to-manufacture LL by the cheaper SL. The use of SLs f ...
... At microwave frequencies the more popular choice for the design of efficient reflectors is a stepped-index Luneburg Lens (LL) with attached metallic spherical cap [2–6]. In this paper we consider the possibility of replacing the relatively-expensive-to-manufacture LL by the cheaper SL. The use of SLs f ...
Superlens
A practical superlens, or super lens, is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is a feature of conventional lenses and microscopes that limits the fineness of their resolution. Many lens designs have been proposed that go beyond the diffraction limit in some way, but there are constraints and obstacles involved in realizing each of them.