A Carpet Cloak Device for Visible Light
... top surface. The porosity of this network is increased by oxidizing several atomic layers of silicon on the internal surfaces at 300°C and subsequently removing this oxide layer by selective etching. By repeating the oxidation and etching several times, the solid silicon is slowly consumed, leaving ...
... top surface. The porosity of this network is increased by oxidizing several atomic layers of silicon on the internal surfaces at 300°C and subsequently removing this oxide layer by selective etching. By repeating the oxidation and etching several times, the solid silicon is slowly consumed, leaving ...
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... cavity mirrors, a very long effective optical path length could be reached with an enhancement factor of 2 × finesse/π, even though the cavity length is rather short. Another attractive property is its simplicity since few instruments can construct a CRDS setup and the lock of laser frequency to cav ...
... cavity mirrors, a very long effective optical path length could be reached with an enhancement factor of 2 × finesse/π, even though the cavity length is rather short. Another attractive property is its simplicity since few instruments can construct a CRDS setup and the lock of laser frequency to cav ...
of optical-fiber dispersion
... It is well known that chirped (aperiodic) refractiveindex Bragg gratings can be used for compensating for the dispersion of optical fiber waveguides.' When used in reflection mode (in contrast to transmission mode), such Bragg gratings exhibit large dispersion. As well, the sign of the dispersion in ...
... It is well known that chirped (aperiodic) refractiveindex Bragg gratings can be used for compensating for the dispersion of optical fiber waveguides.' When used in reflection mode (in contrast to transmission mode), such Bragg gratings exhibit large dispersion. As well, the sign of the dispersion in ...
: (2%)
... by the ?rst and second re?ectors, for wave energy of a electro-optic crystal, shifts the polarization of wave en given wave length which has a first given linear polar 15 ergy passing therethrough in accordance with the signal ization, and to provide a second optical resonant cav level applied there ...
... by the ?rst and second re?ectors, for wave energy of a electro-optic crystal, shifts the polarization of wave en given wave length which has a first given linear polar 15 ergy passing therethrough in accordance with the signal ization, and to provide a second optical resonant cav level applied there ...
Activity Instructions - the WOW Lab at McGill University
... • one red laser • one piece each of green and red JELL-O (optional: one piece each of orange and blue JELL-O) • cue card print-outs (Mission 3) Station 4 - Complete the Optical Course • green laser • one or two pieces of green JELL-O • cue card print-outs (Mission 4) The JELL-O activities were desig ...
... • one red laser • one piece each of green and red JELL-O (optional: one piece each of orange and blue JELL-O) • cue card print-outs (Mission 3) Station 4 - Complete the Optical Course • green laser • one or two pieces of green JELL-O • cue card print-outs (Mission 4) The JELL-O activities were desig ...
Reference Guide to Fiber Optic Testing Glossary Reference Guide to Fib
... molecule or nucleus in an excited state drops to a lower-energy state, resulting in the creation of a photon. (2) Stimulated emission is the process by which, when perturbed by a photon, matter may lose energy resulting in the creation of another photon. The perturbing photon is not destroyed in the ...
... molecule or nucleus in an excited state drops to a lower-energy state, resulting in the creation of a photon. (2) Stimulated emission is the process by which, when perturbed by a photon, matter may lose energy resulting in the creation of another photon. The perturbing photon is not destroyed in the ...
Silicon optical modulators - Optoelectronics Research Centre
... computing, there is also a plethora of other application areas that will benefit from the success of silicon photonics. These include fibre-to-the-home (FTTH) or fibre-to-the-premises (FTTP), environmental monitoring, biological and chemical sensing, medical and military applications, astronomy etc. ...
... computing, there is also a plethora of other application areas that will benefit from the success of silicon photonics. These include fibre-to-the-home (FTTH) or fibre-to-the-premises (FTTP), environmental monitoring, biological and chemical sensing, medical and military applications, astronomy etc. ...
Fast-Fourier-domain delay line for in vivo optical coherence
... commercially available polygonal mirror array 共similar to the one used in this study兲 and a parallelepiped,10 but this system also suffers from high group-delay nonlinearity. A rotating prism array with internal reflection was demonstrated at 2 kHz.11 It exhibits improved group-delay linearity 共99%兲 ...
... commercially available polygonal mirror array 共similar to the one used in this study兲 and a parallelepiped,10 but this system also suffers from high group-delay nonlinearity. A rotating prism array with internal reflection was demonstrated at 2 kHz.11 It exhibits improved group-delay linearity 共99%兲 ...
Manipulating atoms with photons (Nobel lecture of C. Cohen
... Electromagnetic interactions play a central role in low energy physics. They are responsible for the cohesion of atoms and molecules and they are at the origin of the emission and absorption of light by such systems. This light is not only a source of information on the structure of atoms. It can al ...
... Electromagnetic interactions play a central role in low energy physics. They are responsible for the cohesion of atoms and molecules and they are at the origin of the emission and absorption of light by such systems. This light is not only a source of information on the structure of atoms. It can al ...
Wavefront Technology
... Dr.Yeswant Rajagopal, Medical Consultant, Aravind Eye Hospital, Madurai ...
... Dr.Yeswant Rajagopal, Medical Consultant, Aravind Eye Hospital, Madurai ...
Lecture 18
... (A) the plasma membrane labeled with DiI in a hippocampal neuron (15 sec) (B) mitochondria labeled with MitoTracker Red in a BS-C-1 cell (10 sec) (C) the ER labeled with ER-Tracker Red in a BS-C-1 cell (10 sec) (D) lysosomes labeled with LysoTracker Red in a BS-C-1 cell (1 sec) ...
... (A) the plasma membrane labeled with DiI in a hippocampal neuron (15 sec) (B) mitochondria labeled with MitoTracker Red in a BS-C-1 cell (10 sec) (C) the ER labeled with ER-Tracker Red in a BS-C-1 cell (10 sec) (D) lysosomes labeled with LysoTracker Red in a BS-C-1 cell (1 sec) ...
Comparison of Phase Diversity and Curvature Wavefront Sensing
... Dir0 = 5), Ii '2, the first 0Th magnitude (the MTF, "ft 1 I), the first OTF phase (4 j), a horizontal cut through i (from d.c. to the edge), the 0Th phase difference (4i — t2) and a horizontal cut through (41 — 2). Figure 4 shows the same cut through (4j — 2) for increasing extra-focal distances (± ...
... Dir0 = 5), Ii '2, the first 0Th magnitude (the MTF, "ft 1 I), the first OTF phase (4 j), a horizontal cut through i (from d.c. to the edge), the 0Th phase difference (4i — t2) and a horizontal cut through (41 — 2). Figure 4 shows the same cut through (4j — 2) for increasing extra-focal distances (± ...
Soliton Radiation Beat Analysis of Optical Pulses Generated from
... high-resolution astronomical spectrographs. However, there is a variety of novel astronomical instruments that operate in the low- and medium resolution range. They also would profit from the deployment of frequency combs as calibration marks. We propose a fibre-based approach for optical frequency ...
... high-resolution astronomical spectrographs. However, there is a variety of novel astronomical instruments that operate in the low- and medium resolution range. They also would profit from the deployment of frequency combs as calibration marks. We propose a fibre-based approach for optical frequency ...
Numerical Analysis of Relative Phase and Amplitude at the
... It is proven that self-phase modulation, as a nonlinear optical effect, leading to the occurrence frequency shift, called chirp. It will cause a raise or lower edge of the optical pulse. However, it is possible that this nonlinear effect used to reduce the dispersion in optical fibers. In this case, ...
... It is proven that self-phase modulation, as a nonlinear optical effect, leading to the occurrence frequency shift, called chirp. It will cause a raise or lower edge of the optical pulse. However, it is possible that this nonlinear effect used to reduce the dispersion in optical fibers. In this case, ...
n 1n d
... The corresponding modulation of the coherent scattering length density b1 is two orders of magnitude larger than in the best PNR materials reported up to now!! b1 = (bN), due to phase separation of the constituent compounds (b) can be large even if (N) is relatively small !!! M. Fally, I. Dreve ...
... The corresponding modulation of the coherent scattering length density b1 is two orders of magnitude larger than in the best PNR materials reported up to now!! b1 = (bN), due to phase separation of the constituent compounds (b) can be large even if (N) is relatively small !!! M. Fally, I. Dreve ...
Electromagnetically induced transparency
... Two general detection protocols of optical biosensors 1. Fluorescence-based detection Intensity of the fluorescence: the number of target molecules Extremely sensitive, down to a single molecule detection (1) Suffers from laborious labeling processes, that may also interfere with the function of a ...
... Two general detection protocols of optical biosensors 1. Fluorescence-based detection Intensity of the fluorescence: the number of target molecules Extremely sensitive, down to a single molecule detection (1) Suffers from laborious labeling processes, that may also interfere with the function of a ...
Detailed Study Of AlAs-Oxidized Apertures in VCSEL Cavities for
... the study of polarization properties of higher order transverse modes. Some work has been done already in developing vectorial optical models for VCSEL structures. In [12], an approach is presented based on the weighted index method, but is unable to handle diffraction effects which become predomina ...
... the study of polarization properties of higher order transverse modes. Some work has been done already in developing vectorial optical models for VCSEL structures. In [12], an approach is presented based on the weighted index method, but is unable to handle diffraction effects which become predomina ...
Superluminal and Slow Light Propagation in a Room
... Ar-ion laser operating at 514.5 nm was used to pump population from the ground state to the broad 4F2 absorption band of ruby. Electrons decay from this band to a metastable level within a few picoseconds, and eventually return to the ground level with a population relaxation time (T1) of a few mill ...
... Ar-ion laser operating at 514.5 nm was used to pump population from the ground state to the broad 4F2 absorption band of ruby. Electrons decay from this band to a metastable level within a few picoseconds, and eventually return to the ground level with a population relaxation time (T1) of a few mill ...
FILTERS AND BEAM SPLITTERS Several of the applications of
... Wavelength-selective filters are used to produce or select specific color or band of color from a white light source, to isolate a specific wavelength, or to reject a specific wavelength or band of wavelengths. We will study three general classes of wavelength-selective filters according to their us ...
... Wavelength-selective filters are used to produce or select specific color or band of color from a white light source, to isolate a specific wavelength, or to reject a specific wavelength or band of wavelengths. We will study three general classes of wavelength-selective filters according to their us ...
Various Indoor OFDM Optical Wireless Communication Systems and
... Abstract— In this paper, the performance of indoor OFDM(Orthogonal Frequency Division Multiplexing) optical wireless communication systems in the presence of LED clipping distortions is analysed. The Orthogonal frequency division multiplexing (OFDM) is used in many wired and wireless broadband commu ...
... Abstract— In this paper, the performance of indoor OFDM(Orthogonal Frequency Division Multiplexing) optical wireless communication systems in the presence of LED clipping distortions is analysed. The Orthogonal frequency division multiplexing (OFDM) is used in many wired and wireless broadband commu ...
The interference characteristics of light
... to the direction of the incidence light [8], so it is a cooperative target in application. But the cat-eye optical lens is a non-cooperative target whose parameters are unknown. By using the active laser detection technique based on the theory of cat-eye effect of optical lens, a much larger detecti ...
... to the direction of the incidence light [8], so it is a cooperative target in application. But the cat-eye optical lens is a non-cooperative target whose parameters are unknown. By using the active laser detection technique based on the theory of cat-eye effect of optical lens, a much larger detecti ...
(full text)
... nearly perfect absorptance in NbN thin films of the appropriate thickness illuminated at the angle of total internal reflection (TIR) by s-polarized light [5]. As the NbN nanowire arrays are similar to wire-grid polarizers, to analyze their polarization-dependent absorptance, rigorous coupled-wave a ...
... nearly perfect absorptance in NbN thin films of the appropriate thickness illuminated at the angle of total internal reflection (TIR) by s-polarized light [5]. As the NbN nanowire arrays are similar to wire-grid polarizers, to analyze their polarization-dependent absorptance, rigorous coupled-wave a ...
aqsproto
... data. These data are collected by thousands of monitoring stations operated primarily by State and Local Agencies. EPA uses this data to assess the overall status of the nation’s air quality and to prepare reports to Congress as mandated by the Clean Air Act. EPA also uses the data to identify areas ...
... data. These data are collected by thousands of monitoring stations operated primarily by State and Local Agencies. EPA uses this data to assess the overall status of the nation’s air quality and to prepare reports to Congress as mandated by the Clean Air Act. EPA also uses the data to identify areas ...
3D optical data storage
3D optical data storage is the term given to any form of optical data storage in which information can be recorded and/or read with three-dimensional resolution (as opposed to the two-dimensional resolution afforded, for example, by CD).This innovation has the potential to provide petabyte-level mass storage on DVD-sized discs (120mm). Data recording and readback are achieved by focusing lasers within the medium. However, because of the volumetric nature of the data structure, the laser light must travel through other data points before it reaches the point where reading or recording is desired. Therefore, some kind of nonlinearity is required to ensure that these other data points do not interfere with the addressing of the desired point.No commercial product based on 3D optical data storage has yet arrived on the mass market, although several companies are actively developing the technology and claim that it may become available ""soon"".