Spectroscopy – I. Gratings and Prisms
... If we could see the whole spectrum (radio to γ–ray), then every order would completely overlap with every other order. In reality, of course, many effects limit what we can see/measure. For example, the atmosphere will eliminate most photons at shorter wavelengths than about 340nm – as well as large ...
... If we could see the whole spectrum (radio to γ–ray), then every order would completely overlap with every other order. In reality, of course, many effects limit what we can see/measure. For example, the atmosphere will eliminate most photons at shorter wavelengths than about 340nm – as well as large ...
Far-Field Optical Superlens
... fringe images for each object (Figure 3a). The periodicity of the fringe images in the far field increases for objects with characteristic sizes that approach the period of the FSL grating (Λ ) 150 nm). This effect is similar to Moiré fringes but occurs in the near-field zone. The fringe period, δ, ...
... fringe images for each object (Figure 3a). The periodicity of the fringe images in the far field increases for objects with characteristic sizes that approach the period of the FSL grating (Λ ) 150 nm). This effect is similar to Moiré fringes but occurs in the near-field zone. The fringe period, δ, ...
Spatiotemporal pattern formation in
... The instability threshold is inferred from the lowest-lying branches of the stability condition of the most unstable mode: s max(K; G0 , E0 , r0) 5 0. The polarity of the external field exerts a profound influence on the stability behavior of the medium. In the case of positive polarity (E 0 . 0) th ...
... The instability threshold is inferred from the lowest-lying branches of the stability condition of the most unstable mode: s max(K; G0 , E0 , r0) 5 0. The polarity of the external field exerts a profound influence on the stability behavior of the medium. In the case of positive polarity (E 0 . 0) th ...
Optical path function.
... High beam divergence along the beamline: Æ large optical devices Æ high costs and low optical qualities With a not brilliant source the spot size can be made small only reducing the photon flux. ...
... High beam divergence along the beamline: Æ large optical devices Æ high costs and low optical qualities With a not brilliant source the spot size can be made small only reducing the photon flux. ...
Introduction
... wavenumber). This advantage of FT spectrometers is known as CONNES’ advantage. 2) The JAQUINOT advantage arises from the fact that the circular apertures used in FTIR spectrometers has a larger area than the slits used in grating spectrometers, thus enabling higher throughput of radiation. ...
... wavenumber). This advantage of FT spectrometers is known as CONNES’ advantage. 2) The JAQUINOT advantage arises from the fact that the circular apertures used in FTIR spectrometers has a larger area than the slits used in grating spectrometers, thus enabling higher throughput of radiation. ...
super-resolved fluorescence microscopy
... technique remains technically cumbersome and its applications have remained limited to surface studies. The scientific and technical breakthrough in super-resolved fluorescence microscopy has instead come in the form of far-field excitation techniques of two main types, as will be described in the ...
... technique remains technically cumbersome and its applications have remained limited to surface studies. The scientific and technical breakthrough in super-resolved fluorescence microscopy has instead come in the form of far-field excitation techniques of two main types, as will be described in the ...
S U P E R -R E S O LV... Scientific Background on the Nobel Prize in Chemistry 2014
... technique remains technically cumbersome and its applications have remained limited to surface studies. The scientific and technical breakthrough in super-resolved fluorescence microscopy has instead come in the form of far-field excitation techniques of two main types, as will be described in the ...
... technique remains technically cumbersome and its applications have remained limited to surface studies. The scientific and technical breakthrough in super-resolved fluorescence microscopy has instead come in the form of far-field excitation techniques of two main types, as will be described in the ...
Replication of Holograms with Corn Syrup by Rubbing
... information to a corn syrup film, and these techniques are easy, cheap, and accessible. Replication with this material using lithographic and rubbing techniques is also interesting since it is an unusually clean process. The material has an auto developing property, which makes the use of chemical w ...
... information to a corn syrup film, and these techniques are easy, cheap, and accessible. Replication with this material using lithographic and rubbing techniques is also interesting since it is an unusually clean process. The material has an auto developing property, which makes the use of chemical w ...
After referees Review article final_FINAL3
... multiplex advantage of FPA technology to image a full prostate organ section with an approximate area of 40x50mm. The complete chemical image consisted of approximately 66.3 million complete infrared spectra and took just 14 hours to acquire. In a related paper39 the same author showed that the smal ...
... multiplex advantage of FPA technology to image a full prostate organ section with an approximate area of 40x50mm. The complete chemical image consisted of approximately 66.3 million complete infrared spectra and took just 14 hours to acquire. In a related paper39 the same author showed that the smal ...
Method and apparatus for gas discharge laser output light
... [0009] FIG. 1 shoWs schematically one possible optical arrangement according to aspects of an embodiment of the ...
... [0009] FIG. 1 shoWs schematically one possible optical arrangement according to aspects of an embodiment of the ...
A guide to super-resolution fluorescence microscopy
... The process of fluorescence imaging with a well-designed microscope is somewhat similar to painting the perfect object structure with a fuzzy brush. The shape (or rather the intensity distribution) of this brush is called the point spread function (PSF) as it describes how a point-like object is spr ...
... The process of fluorescence imaging with a well-designed microscope is somewhat similar to painting the perfect object structure with a fuzzy brush. The shape (or rather the intensity distribution) of this brush is called the point spread function (PSF) as it describes how a point-like object is spr ...
45.Z-scan measurement of the nonlinear refractive index of graphene
... reported in [5]. From this value of I sat , we can calculate the nonlinear absorption coefficient β that appears in [13]. The maximum transmittance difference for threelayer graphene is ΔT 0 5.1%, indicating almost complete saturation of the absorption. Measurement of the maximal transmittance dif ...
... reported in [5]. From this value of I sat , we can calculate the nonlinear absorption coefficient β that appears in [13]. The maximum transmittance difference for threelayer graphene is ΔT 0 5.1%, indicating almost complete saturation of the absorption. Measurement of the maximal transmittance dif ...
Laser Beams and Resonators
... (11) one arrives at differential equations for g and h of the form d2 Hm dx2 ...
... (11) one arrives at differential equations for g and h of the form d2 Hm dx2 ...
Far-field optical microscope with nanometer-scale
... microscope is limited by the wavelength of visible light. The reason for the limited resolution is diffraction and, ultimately, the uncertainty principle: a wave can not be localized much tighter than half of its vacuum wavelength λ/2. Immersion microscopes ...
... microscope is limited by the wavelength of visible light. The reason for the limited resolution is diffraction and, ultimately, the uncertainty principle: a wave can not be localized much tighter than half of its vacuum wavelength λ/2. Immersion microscopes ...
Kogelnik and Li
... Pierce [8]. The behavior of Gaussian laser beams as they interact with various optical structures has been analyzed by Goubau [9], Kogelnik [lo], [l 11, and others. The present paper summarizes the various theories and is dividedinto three parts. The first part treats the passage of paraxial rays th ...
... Pierce [8]. The behavior of Gaussian laser beams as they interact with various optical structures has been analyzed by Goubau [9], Kogelnik [lo], [l 11, and others. The present paper summarizes the various theories and is dividedinto three parts. The first part treats the passage of paraxial rays th ...
fourier transform infra-red (ftir) spectroscopy
... When check mark is on the [AutoCalc] section, the software automatically determines the factor with which the intensity at the wavenumber position corresponds to the clicked position becomes "0" (or "1" when multiplication or division has been selected) in the resulting spectrum, and then starts the ...
... When check mark is on the [AutoCalc] section, the software automatically determines the factor with which the intensity at the wavenumber position corresponds to the clicked position becomes "0" (or "1" when multiplication or division has been selected) in the resulting spectrum, and then starts the ...
Detennining the Phase Diagra1n and Aggregate Size of a Chro1nonic Liquid Crystal J
... governed by the temperatures and pressures to which a material is subjected, and the majority of compounds change from solids to liquids to gases as the temperature increases under constant pressure. For one out of every several hundred randomly synthesized organic compounds, however, there exists a ...
... governed by the temperatures and pressures to which a material is subjected, and the majority of compounds change from solids to liquids to gases as the temperature increases under constant pressure. For one out of every several hundred randomly synthesized organic compounds, however, there exists a ...
Disorder-Enhanced Imaging with Spatially Controlled Light
... The importance of light for mankind is reflected by the tremendous efforts to take control over its creation and propagation. Profiting from the interplay between light and matter, carefully designed optical elements, such as mirrors and lenses, have been successfully employed in the last centuries ...
... The importance of light for mankind is reflected by the tremendous efforts to take control over its creation and propagation. Profiting from the interplay between light and matter, carefully designed optical elements, such as mirrors and lenses, have been successfully employed in the last centuries ...
Non-Collinear Second Harmonic Generation in
... the nonlinear regime. All the properties of the newly generated light can be completely different from the properties of the incident beam. An increasing number of photonic applications based on these nonlinear effects are routinely in use, but for other desired and in principle possible new commerc ...
... the nonlinear regime. All the properties of the newly generated light can be completely different from the properties of the incident beam. An increasing number of photonic applications based on these nonlinear effects are routinely in use, but for other desired and in principle possible new commerc ...
Highly doped InP as a low loss plasmonic material for
... to many applications by means of intensely localized electric field at the interface and enhanced light-matter interactions. Plasmonics for the mid-IR wavelength region offers unique functionalities for thermal imaging, due to the peak emission wavelength for the temperatures ranging from 200 to 140 ...
... to many applications by means of intensely localized electric field at the interface and enhanced light-matter interactions. Plasmonics for the mid-IR wavelength region offers unique functionalities for thermal imaging, due to the peak emission wavelength for the temperatures ranging from 200 to 140 ...
Optimization of axial resolution in a confocal microscope with
... different with a finite-sized detector. It is of practical significance that for a given finite-sized detector there is an optimum configuration (value of d) for the confocal microscope with D-shaped apertures. Figure 2(b) shows the variation of the half-width of the axial response as a function of ...
... different with a finite-sized detector. It is of practical significance that for a given finite-sized detector there is an optimum configuration (value of d) for the confocal microscope with D-shaped apertures. Figure 2(b) shows the variation of the half-width of the axial response as a function of ...
Optical contrast and clarity of graphene on an
... and by the optical properties of the film. The details of the substrate structure are not required to derive r⬘. This finding allows us to identify the value r of the substrate that optimizes either the contrast or the clarity for graphene imaging. The equations derived here apply to any ambient med ...
... and by the optical properties of the film. The details of the substrate structure are not required to derive r⬘. This finding allows us to identify the value r of the substrate that optimizes either the contrast or the clarity for graphene imaging. The equations derived here apply to any ambient med ...
Counterpropagating optical beams and solitons
... the mutual change of the optical refractive index. A configuration of two waves interacting in a NL material is one of the most frequent ones in laser physics and wave mixing experiments. Numerous concepts in NL optics, such as phase conjugation, Bragg reflection by volume gratings, wave-mixing in pho ...
... the mutual change of the optical refractive index. A configuration of two waves interacting in a NL material is one of the most frequent ones in laser physics and wave mixing experiments. Numerous concepts in NL optics, such as phase conjugation, Bragg reflection by volume gratings, wave-mixing in pho ...
Nonlinear Beam Shaping with Plasmonic Metasurfaces
... ABSTRACT: We present here a method for generating second-harmonic beams with tailored beam profiles using nonlinear metasurfaces based on split ring resonators. By manipulating both the phase and the amplitude of the quadratic nonlinear coefficient locally, at the single inclusion level, the emitted se ...
... ABSTRACT: We present here a method for generating second-harmonic beams with tailored beam profiles using nonlinear metasurfaces based on split ring resonators. By manipulating both the phase and the amplitude of the quadratic nonlinear coefficient locally, at the single inclusion level, the emitted se ...