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... University of California in San Diego, San Diego, United States We investigated surface plasmons in graphene and phonon polaritons in a natural hyperbolic material hexagonal boron nitride (hBN) using infrared nano-imaging. Peculiar properties of phonon polaritons in hBN enabled sub-diffractional foc ...
... University of California in San Diego, San Diego, United States We investigated surface plasmons in graphene and phonon polaritons in a natural hyperbolic material hexagonal boron nitride (hBN) using infrared nano-imaging. Peculiar properties of phonon polaritons in hBN enabled sub-diffractional foc ...
Experimental Verification of n = 0 Structures for Visible Light
... arrays [50]. Figure 2(j) presents the simulated analog of Fig. 2(i), showing identical behavior of the enhancement as a function of wavelength and waveguide width. Differences in the peak wavelengths between theory and experiment are attributed to small differences in the geometry and material const ...
... arrays [50]. Figure 2(j) presents the simulated analog of Fig. 2(i), showing identical behavior of the enhancement as a function of wavelength and waveguide width. Differences in the peak wavelengths between theory and experiment are attributed to small differences in the geometry and material const ...
Full-Text PDF
... that will preferably couple to the waveguide mode with a separation of 4.3 nm and a FSR of 14.5 nm which is consistent for silicon (refractive index 3.47) at λ = 1559 for a θ of 40◦ . This angle is close to the propagating angle in the bus waveguide calculated with a mode solver to be 47◦ . It is im ...
... that will preferably couple to the waveguide mode with a separation of 4.3 nm and a FSR of 14.5 nm which is consistent for silicon (refractive index 3.47) at λ = 1559 for a θ of 40◦ . This angle is close to the propagating angle in the bus waveguide calculated with a mode solver to be 47◦ . It is im ...
Chapter 2.1 - Focusing Fundamentals
... With perfect optics, 84% of the light from the star will be in the bright center, another 7% in the first ring, 3% in the second ring, etc. A telescope with a central obstruction, will spread the light out into the diffraction rings as illustrated by figure 2.1.2. Poor optics will cause a similar ef ...
... With perfect optics, 84% of the light from the star will be in the bright center, another 7% in the first ring, 3% in the second ring, etc. A telescope with a central obstruction, will spread the light out into the diffraction rings as illustrated by figure 2.1.2. Poor optics will cause a similar ef ...
Alternative Beam Splitter/Compensator Configurations for Reduction
... using the Michelson interferometer have been in development since the 1950s. 1 The fundamentals of these techniques were well documented in the 1970 Aspen International Conference on Fourier Spectroscopy.2 The conventional Fourier Transform Spectrometer (FTS) splits incoming electromagnetic radiatio ...
... using the Michelson interferometer have been in development since the 1950s. 1 The fundamentals of these techniques were well documented in the 1970 Aspen International Conference on Fourier Spectroscopy.2 The conventional Fourier Transform Spectrometer (FTS) splits incoming electromagnetic radiatio ...
Results from an Extremely Sensitive Rayleigh
... before, however, when the photon is re-emitted, it is of a different frequency than the incident photon. For this reason, the Raman scatter detection channel must be designed to accept a different wavelength of light than the incident photons that are sent out at 532 nm. The most prevalent atmospher ...
... before, however, when the photon is re-emitted, it is of a different frequency than the incident photon. For this reason, the Raman scatter detection channel must be designed to accept a different wavelength of light than the incident photons that are sent out at 532 nm. The most prevalent atmospher ...
Thesis Manuscript - Materials Physics Center
... One of the most promising and most active nowadays research field in nanoscience, is the field of Nano-Plasmonics, which describes the light interaction with nanostructured metallic systems. The optical response of these nanostructures is determined by a collective resonance of conduction electrons ...
... One of the most promising and most active nowadays research field in nanoscience, is the field of Nano-Plasmonics, which describes the light interaction with nanostructured metallic systems. The optical response of these nanostructures is determined by a collective resonance of conduction electrons ...
Nano-optics of surface plasmon polaritons
... phenomena such as Raman scattering, second harmonic generation (SHG), fluorescence, etc. [1,5]. The intrinsically two-dimensional nature of SPPs provides significant flexibility in engineering SPPbased all-optical integrated circuits needed for optical communications and optical computing [6,7]. The re ...
... phenomena such as Raman scattering, second harmonic generation (SHG), fluorescence, etc. [1,5]. The intrinsically two-dimensional nature of SPPs provides significant flexibility in engineering SPPbased all-optical integrated circuits needed for optical communications and optical computing [6,7]. The re ...
Optical Methods for Tympanic Membrane Characterisation Towards Objective Otoscopy in Otitis Media
... membranes (TM) of the patient, usually be means of otoscopy. The general aim of this thesis was to develop optical methods that enable quantification of TM characteristics associated with otitis media. Diffuse reflectance spectroscopy was applied to quantify TM erythema using previously suggested er ...
... membranes (TM) of the patient, usually be means of otoscopy. The general aim of this thesis was to develop optical methods that enable quantification of TM characteristics associated with otitis media. Diffuse reflectance spectroscopy was applied to quantify TM erythema using previously suggested er ...
PRELIMINARY STUDY ON PHOTONIC CRYSTAL
... when the reflection spectrum beetle wing soaked or put in the water, as shown in Figure 5. The experimental results show that the intensity of the reflection spectrum shifts from 485 nm when the photonic crystal cavity containing air, to 505 nm while photonic crystal cavity containing water. ...
... when the reflection spectrum beetle wing soaked or put in the water, as shown in Figure 5. The experimental results show that the intensity of the reflection spectrum shifts from 485 nm when the photonic crystal cavity containing air, to 505 nm while photonic crystal cavity containing water. ...
Double Negative Materials (DNM) - Institute for Defense Analyses
... Components in Some Developments Using Complex Notation) for the Response From a Forced Harmonic System ......................................................... 3-3 3-4. Transport of EM Radiation Through a Material Showing the Source (S), a dipole Absorber/Emitter in the Material, and an External Po ...
... Components in Some Developments Using Complex Notation) for the Response From a Forced Harmonic System ......................................................... 3-3 3-4. Transport of EM Radiation Through a Material Showing the Source (S), a dipole Absorber/Emitter in the Material, and an External Po ...
Transversal ultrasonic probe
... Figure 8 - C-scan on the S0 Lamb mode. Disturbance caused by the tip to the fringes of equal thickness. The lower picture of fig. 8 shows that the parabolic tip has little effect on the position of two neighbouring fringes. This gives an idea of the disturbed area: a region of approximately 100 µm a ...
... Figure 8 - C-scan on the S0 Lamb mode. Disturbance caused by the tip to the fringes of equal thickness. The lower picture of fig. 8 shows that the parabolic tip has little effect on the position of two neighbouring fringes. This gives an idea of the disturbed area: a region of approximately 100 µm a ...
Manual Physical Chemistry III
... Experimental 1: Determination of Surface Tension of Liquids by drop weight Method ............................................ 2 Experimental 2: Determination of Surface Tension Liquids by Capillary Rise Method ............................................... 8 Experimental 3: To find out the partiti ...
... Experimental 1: Determination of Surface Tension of Liquids by drop weight Method ............................................ 2 Experimental 2: Determination of Surface Tension Liquids by Capillary Rise Method ............................................... 8 Experimental 3: To find out the partiti ...
Tuning of resonance-spacing in a traveling-wave
... resonator coupling by tuning the phase difference between the two arms of the interferometer. Figure 3 shows the normalized frequency-splitting as a function of phase difference between the arms of interferometer denoted by Arm1 and Arm2 in Fig. 1(c), respectively. Since any phase change in the inte ...
... resonator coupling by tuning the phase difference between the two arms of the interferometer. Figure 3 shows the normalized frequency-splitting as a function of phase difference between the arms of interferometer denoted by Arm1 and Arm2 in Fig. 1(c), respectively. Since any phase change in the inte ...
Resolution-and throughput-enhanced spectroscopy using high
... able to enter the spectrometer- therefore resulting in a decrease in light throughput of the resulting spectrum. The depletion of light can be detrimental to application where transient phenomena are the subject f study or systems that are photon-starved -where the amount of light available to the ...
... able to enter the spectrometer- therefore resulting in a decrease in light throughput of the resulting spectrum. The depletion of light can be detrimental to application where transient phenomena are the subject f study or systems that are photon-starved -where the amount of light available to the ...
PRELIMINARY STUDY ON PHOTONIC CRYSTAL
... [1]. For example, the structure and shape of honey is hexagonal structure which is the most efficient and powerful than other structures, so that this structure has been utilized in the field of technology of building structures [2]. Another example is the wing of butterflies and some insects intere ...
... [1]. For example, the structure and shape of honey is hexagonal structure which is the most efficient and powerful than other structures, so that this structure has been utilized in the field of technology of building structures [2]. Another example is the wing of butterflies and some insects intere ...
HOLOGRAPHY, 1948-1971
... waves which have a definite phase. But an ordinary photograph loses the phase completely, it records only the intensities. No wonder we lose the phase, if there is nothing to compare it with! Let us see what happens if we add a My argument is illustrated in Figure standard to it, a “coherent backgro ...
... waves which have a definite phase. But an ordinary photograph loses the phase completely, it records only the intensities. No wonder we lose the phase, if there is nothing to compare it with! Let us see what happens if we add a My argument is illustrated in Figure standard to it, a “coherent backgro ...
Determination of the transfer function for optical surface topography
... consists of measuring the noise and flatness of the instrument, amplification coefficients, linearity and squareness of the scales, which although common to all instrument types, do not give a complete system characterization. These parameters, for example, do not describe the response of the system ...
... consists of measuring the noise and flatness of the instrument, amplification coefficients, linearity and squareness of the scales, which although common to all instrument types, do not give a complete system characterization. These parameters, for example, do not describe the response of the system ...
Discussion questions Section 29.4 Images of images 851
... that it doesn’t really matter. When a mirror has shallow curvature, all the reflected rays hit the same point, so 1 could be expressed in any units you like. It could, for instance, be 1 cm, unless your mirror is smaller than 1 cm! The only way to find out anything mathematical about the rays is to ...
... that it doesn’t really matter. When a mirror has shallow curvature, all the reflected rays hit the same point, so 1 could be expressed in any units you like. It could, for instance, be 1 cm, unless your mirror is smaller than 1 cm! The only way to find out anything mathematical about the rays is to ...
Fiber Waveguide
... change at the core–cladding interface, such fibers are called step-index fibers. In a different type of fiber, known as graded-index fiber, the refractive index decreases gradually inside the core. Considerable insight in the guiding properties of optical fibers can be gained by using a ray picture ...
... change at the core–cladding interface, such fibers are called step-index fibers. In a different type of fiber, known as graded-index fiber, the refractive index decreases gradually inside the core. Considerable insight in the guiding properties of optical fibers can be gained by using a ray picture ...
Do Solitonlike Self-Similar Waves Exist in Nonlinear Optical Media?
... direction. No such confinement occurs in the x direction along which n varies as indicated in Eq. (11). To satisfy Eq. (1), the refractive index must be graded with n1 ’ 0:1 cm2 , which lead to w0 70 m near 1:55 m. The diffraction length for this value of w0 is about 2 cm. If we use n2 6 10 ...
... direction. No such confinement occurs in the x direction along which n varies as indicated in Eq. (11). To satisfy Eq. (1), the refractive index must be graded with n1 ’ 0:1 cm2 , which lead to w0 70 m near 1:55 m. The diffraction length for this value of w0 is about 2 cm. If we use n2 6 10 ...
Surface plasmon resonance microscopy
Surface Plasmon Resonance Microscopy (SPRM) is a label free analytical tool that combines the surface plasmon resonance of metallic surfaces with imaging of the metallic surface.The heterogeneity of the refractive index of the metallic surface imparts high contrast images, caused by the shift in the resonance angle.SPRM can achieve a thickness sensitivity of few tenths of nanometer and lateral resolution achieves values of micrometer scale.SPRM is used to characterize surfaces, self-assembled monolayers, multilayer films, metal nanoparticles, oligonucleotides arrays, binding and reduction reactions.Surface Plasmon polaritons are surface electromagnetic waves coupled to oscillating free electrons of a metallic surface that propagate along a metal/dielectric interface.Since polaritons are highly sensitive to small changes in the refractive index of the metallic material,it can be used as a biosensing tool that does not require labeling. SPRM measurements can be made in real-time.Wang and collaborators studied the binding kinetics of membrane proteins in single cells.The experimental setup of an SPRM can be seen in the Figure 1, where an adherent cell is grown on a gold film and placed in an inverted microscope, p-polarized light was used to create the surface plasmons on the gold film and a CCD camera was used to create the SPR image.