Analytical technique: Fluorescence Spectroscopy
... Sampling and type of analysis: this technique can be applied to solid samples, powders, films and solutions of materials and is ideal for the measurement of the emission and excitation spectra of materials which may provide indications of the presence (qualitative) of fluorophores or chromophores. W ...
... Sampling and type of analysis: this technique can be applied to solid samples, powders, films and solutions of materials and is ideal for the measurement of the emission and excitation spectra of materials which may provide indications of the presence (qualitative) of fluorophores or chromophores. W ...
LAB 3 - SPATIAL COHERENCE AND OPTICAL IMAGING
... Using very rough estimates for the wavelength of the filters, show that the dot spacing measured in Part II are consistent with Fourier optics principles. What did using the interference filters do to the spectrum of the light source? (3 points) ...
... Using very rough estimates for the wavelength of the filters, show that the dot spacing measured in Part II are consistent with Fourier optics principles. What did using the interference filters do to the spectrum of the light source? (3 points) ...
12. Infrared and Visible Waves
... How do infrared thermometers work? An infrared thermometer enables the remote sensing of temperature. It does this by detecting the infrared radiation emitted by an object and converting it into a temperature. The eardrum is an accurate point for measuring the body’s temperature, because it is deep ...
... How do infrared thermometers work? An infrared thermometer enables the remote sensing of temperature. It does this by detecting the infrared radiation emitted by an object and converting it into a temperature. The eardrum is an accurate point for measuring the body’s temperature, because it is deep ...
In situ high-resolution atomic force microscope imaging of biological
... was achieved. This resolution can be explained by the presence of a microapex on the AFM tip. Resolution was diminished after LiCl treatment and after regeneration of the S layer and is probably a consequence of surface softening. It is also shown that, in contrast to the imaging of rigid samples, t ...
... was achieved. This resolution can be explained by the presence of a microapex on the AFM tip. Resolution was diminished after LiCl treatment and after regeneration of the S layer and is probably a consequence of surface softening. It is also shown that, in contrast to the imaging of rigid samples, t ...
Optical generation and detection of elastic waves in solids
... D. Royer, M.-H. Noroy, M. Fink. Optical generation and detection of elastic waves in solids. ...
... D. Royer, M.-H. Noroy, M. Fink. Optical generation and detection of elastic waves in solids. ...
Attosecond angular streaking - the Max Planck Institute for the
... CEP to the peak ionization streaking angle – as expected for an ideal circularly polarized streaking field (Fig. 1c and d). A different streaking technique with sub-femtosecond time resolution was demonstrated before, the so-called “attosecond-streaking” or “energy streaking” with which the electric ...
... CEP to the peak ionization streaking angle – as expected for an ideal circularly polarized streaking field (Fig. 1c and d). A different streaking technique with sub-femtosecond time resolution was demonstrated before, the so-called “attosecond-streaking” or “energy streaking” with which the electric ...
ieee-icra-2005
... usually slow and imprecise, results also cannot be estimated. Later on, closed-loop task-oriented autonomous control [13] was developed to avoid problems. This system is limited by executing only the given tasks without user intervention. Yet, the automatic control in nanoworld is still challenging ...
... usually slow and imprecise, results also cannot be estimated. Later on, closed-loop task-oriented autonomous control [13] was developed to avoid problems. This system is limited by executing only the given tasks without user intervention. Yet, the automatic control in nanoworld is still challenging ...
Dynamic electrostatic force microscopy in liquid media
... with the experimental data for the frequency 5 MHz which were obtained with the parameters previously derived for 20 MHz with no additional fitting parameters. At lower frequencies, the agreement is still reasonable although some deviations between theoretical calculations and measurements start to a ...
... with the experimental data for the frequency 5 MHz which were obtained with the parameters previously derived for 20 MHz with no additional fitting parameters. At lower frequencies, the agreement is still reasonable although some deviations between theoretical calculations and measurements start to a ...
Multiple-wavelength operation of electroabsorption intensity
... using a rapid thermal processor at 590 °C for 120 s. Asgrown samples 共without implant兲 were included into each run to act as the control sample. The samples were faced down on a piece of GaAs substrate to provide arsenic overpressure to the surface and hence to minimize the outdiffusion of arsenic d ...
... using a rapid thermal processor at 590 °C for 120 s. Asgrown samples 共without implant兲 were included into each run to act as the control sample. The samples were faced down on a piece of GaAs substrate to provide arsenic overpressure to the surface and hence to minimize the outdiffusion of arsenic d ...
CP1: Investigation into the Feasibility of a Three Axis
... technique. Therefore they have used ‘ideal’ samples such as highly reflective, smooth surfaces. This section explains how and why interferometry is used on biological samples and reviews recent developments in the field. A common problem in biological optical microscopy is low contrast between featu ...
... technique. Therefore they have used ‘ideal’ samples such as highly reflective, smooth surfaces. This section explains how and why interferometry is used on biological samples and reviews recent developments in the field. A common problem in biological optical microscopy is low contrast between featu ...
Laser - bYTEBoss
... Emission of Radiation A mechanism for emitting electromagnetic radiation, often visible light, via the process of stimulated ...
... Emission of Radiation A mechanism for emitting electromagnetic radiation, often visible light, via the process of stimulated ...
Pulsed-source and swept-source spectral-domain optical coherence tomography with reduced motion artifacts
... yields S ≈ sin 2 (k0 ∆z ) /(k0 ∆z ) 2 for a square pulse and S ≈ exp[−k0 2 ∆z 2 /(2 ln 2)] for a Gaussian pulse where τ is a pulse width determined at its half power points (or full-width-athalf-maximum, FWHM) and ∆z = vzτ denotes the axial displacement of the sample during the pulse width τ. These ...
... yields S ≈ sin 2 (k0 ∆z ) /(k0 ∆z ) 2 for a square pulse and S ≈ exp[−k0 2 ∆z 2 /(2 ln 2)] for a Gaussian pulse where τ is a pulse width determined at its half power points (or full-width-athalf-maximum, FWHM) and ∆z = vzτ denotes the axial displacement of the sample during the pulse width τ. These ...
using ultra-short millimetre wave pulses
... detector. This arrangement was much more sensitive than the direct detection but the IF pulse width was broadened to 700ps. This is believed to be caused by a combination of the mixer, IF amplifier and coaxial detector response times. Note also that 140ps is actually less than one cycle of 5GHz and ...
... detector. This arrangement was much more sensitive than the direct detection but the IF pulse width was broadened to 700ps. This is believed to be caused by a combination of the mixer, IF amplifier and coaxial detector response times. Note also that 140ps is actually less than one cycle of 5GHz and ...
Dense plasma diagnostics with an amplitude-division soft-x-ray laser
... Interferometry with visible and ultraviolet lasers has been used for more than three decades to obtain multidimensional maps of the electron density in a large variety of dense plasmas.1,2 However, free –free absorption and refraction of the probe beam limit the maximum electron density, plasma size ...
... Interferometry with visible and ultraviolet lasers has been used for more than three decades to obtain multidimensional maps of the electron density in a large variety of dense plasmas.1,2 However, free –free absorption and refraction of the probe beam limit the maximum electron density, plasma size ...
Measuring the Complete Transverse Spatial Mode Spectrum
... properly choosing their focal lengths, it is not necessary to displace the S± systems nor the interferometer arms. To demonstrate that our data analysis scheme is feasible and does not require a large number of measurements for each φ± , we have numerically simulated the transformation and processin ...
... properly choosing their focal lengths, it is not necessary to displace the S± systems nor the interferometer arms. To demonstrate that our data analysis scheme is feasible and does not require a large number of measurements for each φ± , we have numerically simulated the transformation and processin ...
ATR Accessories: An Overview
... ideal for the analysis of solids, liquids, pastes and gels. The UATR employs a DiCompTM crystal, which is composed of a diamond ATR with a zinc selenide focusing element which is in direct contact with the diamond. The focusing element provides interfacing optics for the IR radiation into the diamon ...
... ideal for the analysis of solids, liquids, pastes and gels. The UATR employs a DiCompTM crystal, which is composed of a diamond ATR with a zinc selenide focusing element which is in direct contact with the diamond. The focusing element provides interfacing optics for the IR radiation into the diamon ...
Raman spectroscopy of nanostructures and single molecules
... easily available accessories. Infrared spectroscopy, spanning from 20 to 13000 cm-1, is a comprehensive tool for the quantitative study of vibrational modes in terms of changes in electric dipoles associated with vibrations and rotations. In addition, the electronic structure, as in highly correlate ...
... easily available accessories. Infrared spectroscopy, spanning from 20 to 13000 cm-1, is a comprehensive tool for the quantitative study of vibrational modes in terms of changes in electric dipoles associated with vibrations and rotations. In addition, the electronic structure, as in highly correlate ...
From near-field optics to optical antennas
... and serves as a source of information from which the sample properties are reconstructed. Manipulating the relative separation between probe and sample adds to the information content. A near-field image is recorded by raster scanning the probe over the sample, or vice versa, while continuously dete ...
... and serves as a source of information from which the sample properties are reconstructed. Manipulating the relative separation between probe and sample adds to the information content. A near-field image is recorded by raster scanning the probe over the sample, or vice versa, while continuously dete ...
The principle of the experiment - Syrte
... a few tens of nanometers to several microns, however, none of them have yet reached the uncertainties achieved by the best mechanical measurements. Typically, experiments measuring the atom-wall QED interaction have an overall relative uncertainty at or above 10 %.4 In this project we pursue an orig ...
... a few tens of nanometers to several microns, however, none of them have yet reached the uncertainties achieved by the best mechanical measurements. Typically, experiments measuring the atom-wall QED interaction have an overall relative uncertainty at or above 10 %.4 In this project we pursue an orig ...
Our single crystal CVD diamond opens the way to new
... Element Six, part of the De Beers Group of Companies, designs, develops and produces synthetic diamond and other supermaterials, and operates worldwide with primary manufacturing facilities in China, Germany, Ireland, South Africa, the UK and US. Element Six supermaterial solutions are used in appli ...
... Element Six, part of the De Beers Group of Companies, designs, develops and produces synthetic diamond and other supermaterials, and operates worldwide with primary manufacturing facilities in China, Germany, Ireland, South Africa, the UK and US. Element Six supermaterial solutions are used in appli ...
Self-stabilized single-longitudinal-mode operation
... of the waveforms of -200 Q-switched pulses. The pulse-to-pulse intensity fluctuation is <0.1%. There are also no detectable pulse-shape variations. Figure 4 shows the lasing spectrum of the Q-switched pulses measured by a grating spectrometer. The laser stably operates in single longitudinal mode wi ...
... of the waveforms of -200 Q-switched pulses. The pulse-to-pulse intensity fluctuation is <0.1%. There are also no detectable pulse-shape variations. Figure 4 shows the lasing spectrum of the Q-switched pulses measured by a grating spectrometer. The laser stably operates in single longitudinal mode wi ...
Criteria for Optical Systems: Optical Path Difference • Optical Path
... and the conductivity σ of the material ...
... and the conductivity σ of the material ...
Optical Sources and Detectors
... Variations in strength are described in more precise physical terms, which have developed in the areas called radiometry and photometry. Radiometry is the science of measurement of electromagnetic radiation. In the discussion we present the radiometric quantities or physical terms used to characteri ...
... Variations in strength are described in more precise physical terms, which have developed in the areas called radiometry and photometry. Radiometry is the science of measurement of electromagnetic radiation. In the discussion we present the radiometric quantities or physical terms used to characteri ...
Presentation
... Media, characterized by permittivity (or permeability) tensors with opposite signs of diagonal components, exhibit hyperbolic-type dispersion in space of wave vectors. Such media are referred as hyperbolic metamaterials (HMMs). A distinctive feature of such media is a capability to support propagati ...
... Media, characterized by permittivity (or permeability) tensors with opposite signs of diagonal components, exhibit hyperbolic-type dispersion in space of wave vectors. Such media are referred as hyperbolic metamaterials (HMMs). A distinctive feature of such media is a capability to support propagati ...
AFM-IR
AFM-IR refers to atomic force microscope (AFM) based infrared (IR) spectroscopy. AFM-IR is a technique for chemical analysis of samples at nanoscale spatial resolution. AFM-IR is related to techniques including Tip-Enhanced Raman Spectroscopy (TERS) and scanning near-field optical microscopy (SNOM) and other methods of vibrational analysis with scanning probe microscopy. The AFM-IR technique uses a sharp tip of an AFM probe to measure the absorption of infrared light by a sample. Recording the amount of IR absorption as a function of wavelength or wavenumber creates nanoscale IR absorption spectra, which can be used to chemically characterize and even identify unknown materials. Recording the IR absorption as a function of position can be used to create chemical composition maps that show the spatial distribution of different chemical components. AFM-IR can overcome the diffraction limit that limits the spatial resolution of conventional infrared microscopy and microspectroscopy to the scale of several microns. AFM-IR can achieve spatial resolution down to around 20 nm, limited in some case only by the sharpness of the AFM probe tip and sensitivity down to the scale of molecular monolayers.