High optical absorption in graphene
... Light absorption in thin films has always been a relevant topic in optics, especially from the application point of view. Graphene is in many ways the ultimate thin film, only one atomic layer thick, and has photonic properties of high interest for optoelectronic applications [1]. Noteworthy is that ...
... Light absorption in thin films has always been a relevant topic in optics, especially from the application point of view. Graphene is in many ways the ultimate thin film, only one atomic layer thick, and has photonic properties of high interest for optoelectronic applications [1]. Noteworthy is that ...
Processing of Graphene combining Optical Detection and Scanning
... the substrate. This substrate allows for detection of graphene using conventional light microscopes due to a strong amplitude modulation of reflected light at the interface of graphene, silicon dioxide and silicon [18]. This amplitude modulation causes a marginal but significant colour shift for gra ...
... the substrate. This substrate allows for detection of graphene using conventional light microscopes due to a strong amplitude modulation of reflected light at the interface of graphene, silicon dioxide and silicon [18]. This amplitude modulation causes a marginal but significant colour shift for gra ...
Photonic Crystals - Materials Computation Center
... NASA Jet Propulsion Laboratory California Institute of Technology ...
... NASA Jet Propulsion Laboratory California Institute of Technology ...
Non-iterative phase hologram computation for low
... CGHs are ideally complex valued functions that modulate both the amplitude and phase of the incident light. Yet, available SLMs can provide only some restricted type of modulation, such as phase-only, amplitude-only or binary [14, 15]. One option is to perform direct quantization on the ideal full c ...
... CGHs are ideally complex valued functions that modulate both the amplitude and phase of the incident light. Yet, available SLMs can provide only some restricted type of modulation, such as phase-only, amplitude-only or binary [14, 15]. One option is to perform direct quantization on the ideal full c ...
Portable Sensing Field Device
... available for relatively low prices does not change the complexity of building one yourself. Time-of-flight based rangefinders are extremely complex and require the designers to be extremely precise in their actions. The devices that are currently on the market that achieve a similar function usuall ...
... available for relatively low prices does not change the complexity of building one yourself. Time-of-flight based rangefinders are extremely complex and require the designers to be extremely precise in their actions. The devices that are currently on the market that achieve a similar function usuall ...
demolition general notes
... program and field adjust set points based on actual daylight levels in the various spaces. Photocell shall automatically dim the luminaires in the daylight zone to maintain a User/Owner approved lighting level when sufficient daylight is present in each space. Cycling of lights on/off or dim raise/l ...
... program and field adjust set points based on actual daylight levels in the various spaces. Photocell shall automatically dim the luminaires in the daylight zone to maintain a User/Owner approved lighting level when sufficient daylight is present in each space. Cycling of lights on/off or dim raise/l ...
Influence of optical forces on nonlinear optical frequency conversion
... Optomechanical devices based on the transverse gradient force, generally consist of a substrate and a suspended waveguide [5] or two parallel waveguides [6]. The deformation contributes to the effective index change and has been widely used to tune the linear characteristics such as phase, coupling ...
... Optomechanical devices based on the transverse gradient force, generally consist of a substrate and a suspended waveguide [5] or two parallel waveguides [6]. The deformation contributes to the effective index change and has been widely used to tune the linear characteristics such as phase, coupling ...
Lec03 - nptel
... figure shows a cross-section of an optical fiber with a core of refractive index n 1 and a cladding of refractive index n2. The incident ray AO (shown by dotted line) is incident at an angle ϕ with the axis of the fibre. The refracted ray for AO in the core (dotted line ON1) fails to be incident on ...
... figure shows a cross-section of an optical fiber with a core of refractive index n 1 and a cladding of refractive index n2. The incident ray AO (shown by dotted line) is incident at an angle ϕ with the axis of the fibre. The refracted ray for AO in the core (dotted line ON1) fails to be incident on ...
Lecture 25: Lithography
... with no reduction in size) but usually the size is reduced so that the pattern is transferred to a smaller region on the wafer. This is done by using suitable lens to demagnify the pattern. Lithography can be broadly divided into two stages, each of which consists of several steps. 1. First, the pat ...
... with no reduction in size) but usually the size is reduced so that the pattern is transferred to a smaller region on the wafer. This is done by using suitable lens to demagnify the pattern. Lithography can be broadly divided into two stages, each of which consists of several steps. 1. First, the pat ...
Measuring the Real Point Spread Function of High Numerical
... concave reflective surface — of the same or larger numerical aperture and of perfect (comparatively speaking) optical quality. This is problematic. Even if two lenses of the same type are available, a problem still remains of apportioning the measured aberrations to the individual lenses. The star t ...
... concave reflective surface — of the same or larger numerical aperture and of perfect (comparatively speaking) optical quality. This is problematic. Even if two lenses of the same type are available, a problem still remains of apportioning the measured aberrations to the individual lenses. The star t ...
AN 447: Interfacing Altera Devices with 3.3/3.0/2.5 V LVTTL
... Table 3: Maximum Allowed Current Metrics Required to Drive Supported Altera Devices without ...
... Table 3: Maximum Allowed Current Metrics Required to Drive Supported Altera Devices without ...
An efficient approach to noise analysis through multidimensional
... sources in terms of carrier velocity and population fluctuations—called diffusion and generation-recombination noise sources, respectively. Second, they evaluate the effect of microscopic fluctuations on voltage or current fluctuations at the device terminals. Owing to the small amplitude of microsc ...
... sources in terms of carrier velocity and population fluctuations—called diffusion and generation-recombination noise sources, respectively. Second, they evaluate the effect of microscopic fluctuations on voltage or current fluctuations at the device terminals. Owing to the small amplitude of microsc ...
(full text)
... A finite-element method for calculating the illumination-dependence of absorption in three-dimensional nanostructures is presented based on the radio frequency module of the Comsol Multiphysics software package (Comsol AB). This method is capable of numerically determining the optical response and n ...
... A finite-element method for calculating the illumination-dependence of absorption in three-dimensional nanostructures is presented based on the radio frequency module of the Comsol Multiphysics software package (Comsol AB). This method is capable of numerically determining the optical response and n ...
D12 in docx
... architectures based on Al-doped ZnO grown by atomic-layer deposition. Plasma frequencies up to visible frequencies have been achieved at reasonably small losses [D12:7]. Thus, this approach appears to be very attractive for three-dimensional infrared metamaterials and transformation-optics architect ...
... architectures based on Al-doped ZnO grown by atomic-layer deposition. Plasma frequencies up to visible frequencies have been achieved at reasonably small losses [D12:7]. Thus, this approach appears to be very attractive for three-dimensional infrared metamaterials and transformation-optics architect ...
slides - Indico
... PMOS smaller than 1/3 (found for devices operating in strong inversion) NMOS achieves a smaller ENC at a smaller Ci/CD since it operates closer to weak inversion with a larger transconductance gm 12-16 Sept 2005, Heidelberg ...
... PMOS smaller than 1/3 (found for devices operating in strong inversion) NMOS achieves a smaller ENC at a smaller Ci/CD since it operates closer to weak inversion with a larger transconductance gm 12-16 Sept 2005, Heidelberg ...
The effects of longitudinal chromatic aberration and a shift in the
... The modulation transfer function for the diffraction limited eye was calculated (Eq. (1) in Appendix A) using a model originally described by Hopkins (1955) and Smith (1982) (the program was written by L.R. Stark). This model describes the ability of an optical system to transfer object contrast to ...
... The modulation transfer function for the diffraction limited eye was calculated (Eq. (1) in Appendix A) using a model originally described by Hopkins (1955) and Smith (1982) (the program was written by L.R. Stark). This model describes the ability of an optical system to transfer object contrast to ...
Design and construction of a refracting telescope
... Any incident ray travelling parallel to the principal axis of a converging lens will refract through the lens and travel through a focal point on the opposite side of the lens Any incident ray travelling through the focal point on the way to the lens will refract through the lens and travel parallel ...
... Any incident ray travelling parallel to the principal axis of a converging lens will refract through the lens and travel through a focal point on the opposite side of the lens Any incident ray travelling through the focal point on the way to the lens will refract through the lens and travel parallel ...
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS (G02F takes
... • Other IPC classes which are not used for classification are: • G02B 7/185 - G02B 7/198 (subject-matter covered by G02B 7/182 and subgroups), • G02B 27/18 (subject-matter covered in H04N and G03B), and • G02B 27/24 (subject-matter covered by G02B 27/22 and subgroups). Indexing Codes in general: Cla ...
... • Other IPC classes which are not used for classification are: • G02B 7/185 - G02B 7/198 (subject-matter covered by G02B 7/182 and subgroups), • G02B 27/18 (subject-matter covered in H04N and G03B), and • G02B 27/24 (subject-matter covered by G02B 27/22 and subgroups). Indexing Codes in general: Cla ...
Spectral Domain Optical Coherence Tomography
... Compared with traditional TDOCT, SDOCT technology yields unprecedented acquisition speeds and significantly higher axial resolutions using a potentially affordable SLD source. This system produced high quality images while operating at safe ocular exposure levels, even below that of the commercially ...
... Compared with traditional TDOCT, SDOCT technology yields unprecedented acquisition speeds and significantly higher axial resolutions using a potentially affordable SLD source. This system produced high quality images while operating at safe ocular exposure levels, even below that of the commercially ...
Get PDF - OSA Publishing
... useful for my fast-moving sample [22]? Which techniques offer the best compromise between spatiotemporal resolution and 3D imaging capability [23]? What superresolution methods are available for cell biologists [24], and how are they applied in an optimal fashion [25]? How would SIM perform in the s ...
... useful for my fast-moving sample [22]? Which techniques offer the best compromise between spatiotemporal resolution and 3D imaging capability [23]? What superresolution methods are available for cell biologists [24], and how are they applied in an optimal fashion [25]? How would SIM perform in the s ...
Full-Text PDF
... Abstract: In the recent past, the field of optofluidics has thrived from the immense efforts of researchers from diverse communities. The concept of optofluidics combines optics and microfluidics to exploit novel properties and functionalities. In the very beginning, the unique properties of liquid, ...
... Abstract: In the recent past, the field of optofluidics has thrived from the immense efforts of researchers from diverse communities. The concept of optofluidics combines optics and microfluidics to exploit novel properties and functionalities. In the very beginning, the unique properties of liquid, ...
Slow light in various media: a tutorial
... strength is zero, while the maximum value of oscillator strength is unity. Strictly speaking, the transitions with zero oscillator strength are called “forbidden,” while all other transitions are called “allowed,” but it is also commonplace to refer to all the transitions with a very small oscillato ...
... strength is zero, while the maximum value of oscillator strength is unity. Strictly speaking, the transitions with zero oscillator strength are called “forbidden,” while all other transitions are called “allowed,” but it is also commonplace to refer to all the transitions with a very small oscillato ...
Total Internal Reflection Fluorescence
... NOTE: As the cells’ refractive index is typically higher than water, the incident angle of the illumination beam may need to be increased in order to achieve TIR at this new surface. ALTERNATE PROTOCOL ...
... NOTE: As the cells’ refractive index is typically higher than water, the incident angle of the illumination beam may need to be increased in order to achieve TIR at this new surface. ALTERNATE PROTOCOL ...
The Microscope in a Computer: Image Synthesis from Three
... in which η0 = (µ0 /ǫ0 )1/2 is the wave impedance of free space. Although alternative terminologies do exist, we will use the term light intensity or simply intensity for the radiated power per unit area. The light intensity is a direct measure of the signal collected by recording media that convert ...
... in which η0 = (µ0 /ǫ0 )1/2 is the wave impedance of free space. Although alternative terminologies do exist, we will use the term light intensity or simply intensity for the radiated power per unit area. The light intensity is a direct measure of the signal collected by recording media that convert ...
Study on high signal-to-noise ratio (SNR) silicon p
... internal photoelectric effect and on the theory of p-n junction [2]. Presently, most of the photodetectors, which include photoresistors, photodiodes, phototransistors integrated photodetectors and so on, belong to semiconductor photodetectors and mostly adopt the material of element semiconductor a ...
... internal photoelectric effect and on the theory of p-n junction [2]. Presently, most of the photodetectors, which include photoresistors, photodiodes, phototransistors integrated photodetectors and so on, belong to semiconductor photodetectors and mostly adopt the material of element semiconductor a ...
Night vision device
A night vision device (NVD) is an optoelectronic device that allows images to be produced in levels of light approaching total darkness. The image may be a conversion to visible light of both visible light and near-infrared, while by convention detection of thermal infrared is denoted thermal imaging. The image produced is typically monochrome, e.g. shades of green. NVDs are most often used by the military and law enforcement agencies, but are available to civilian users. The term usually refers to a complete unit, including an image intensifier tube, a protective and generally water-resistant housing, and some type of mounting system. Many NVDs also include optical components such as a sacrificial lens, or telescopic lenses or mirrors. An NVD may have an IR illuminator, making it an active as opposed to passive night vision device.Night vision devices were first used in World War II, and came into wide use during the Vietnam War. The technology has evolved greatly since their introduction, leading to several ""generations"" of night vision equipment with performance increasing and price decreasing. Consequently, they are available for a wide range of applications, e.g. for gunners, drivers and aviators. Another term is ""night optical/observation device"" or NOD.