Ultrafast Internal Conversion of Aromatic Molecules Studied
... important topographic feature of the surface crossings for non-adiabatic transitions is the conical intersection, which is funnel-shaped in two-dimensional coordinate space but actually is a seam of crossing between multi-dimensional potential energy surfaces [2–5]. The conical intersection facilita ...
... important topographic feature of the surface crossings for non-adiabatic transitions is the conical intersection, which is funnel-shaped in two-dimensional coordinate space but actually is a seam of crossing between multi-dimensional potential energy surfaces [2–5]. The conical intersection facilita ...
Construction of a Calcium Matter-Wave Interferometer
... work, and extra-curricular growth at a fraction of the cost. The Physics and Astronomy Department, in particular, goes out of its way to provide the best educational opportunities that it can. Having spent my entire pursuit of higher education within this department, I would like to express my grati ...
... work, and extra-curricular growth at a fraction of the cost. The Physics and Astronomy Department, in particular, goes out of its way to provide the best educational opportunities that it can. Having spent my entire pursuit of higher education within this department, I would like to express my grati ...
PASSION FOR PRECISION
... quantities such as length or voltage into a frequency in order to make accurate measurement. This is what my friend and mentor Arthur Schawlow at Stanford University had in mind when he advised his students: “Never measure anything but frequency!” Measuring a frequency, i.e. counting the number of c ...
... quantities such as length or voltage into a frequency in order to make accurate measurement. This is what my friend and mentor Arthur Schawlow at Stanford University had in mind when he advised his students: “Never measure anything but frequency!” Measuring a frequency, i.e. counting the number of c ...
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... nonlinearity and coherence, solitons cannot form at any size, as there is a unique existence condition for soliton formation 关3兴. In fact, the size of the filaments which is most close to the condition for soliton formation determines the modulation scale or the spatial frequency that will enjoy the ...
... nonlinearity and coherence, solitons cannot form at any size, as there is a unique existence condition for soliton formation 关3兴. In fact, the size of the filaments which is most close to the condition for soliton formation determines the modulation scale or the spatial frequency that will enjoy the ...
PPT - Institute of Physics, Bhubaneswar
... Increasing the length doesn‘t help due to strong absorption in the medium Electromagnetically Induced Transparency (EIT) provides a larger 3rd order non-linearity without absorption. ...
... Increasing the length doesn‘t help due to strong absorption in the medium Electromagnetically Induced Transparency (EIT) provides a larger 3rd order non-linearity without absorption. ...
Semiconductor Disk Lasers: Recent Advances in Generation of
... the 2–3 μm wavelength range. Most recently, GaSb-based SDLs incorporating semiconductor saturable absorber mirrors were used to generate optical pulses as short as 384 fs at 2 μm, the shortest pulses obtained from a semiconductor laser at this wavelength range. ...
... the 2–3 μm wavelength range. Most recently, GaSb-based SDLs incorporating semiconductor saturable absorber mirrors were used to generate optical pulses as short as 384 fs at 2 μm, the shortest pulses obtained from a semiconductor laser at this wavelength range. ...
Optically Pumped Solid-State Lasers
... A large number of paramagnetic ions from the iron, rare-earth (lanthanide) and actinide groups of the periodic table exhibit laser action when doped into a large number of host crystals or glasses. In a separate class of solid-state lasers — the so-called stoichiometric lasers the active ion is not ...
... A large number of paramagnetic ions from the iron, rare-earth (lanthanide) and actinide groups of the periodic table exhibit laser action when doped into a large number of host crystals or glasses. In a separate class of solid-state lasers — the so-called stoichiometric lasers the active ion is not ...
Measuring the spatiotemporal electric field of
... a distance d between them, which is usually ⬍1 mm), the collimated beams cross at angle , which is equal to d / f, and we place a camera at the crossing point in order to record their interference. In the other dimension we use a diffraction grating and a cylindrical lens to map the wavelength onto ...
... a distance d between them, which is usually ⬍1 mm), the collimated beams cross at angle , which is equal to d / f, and we place a camera at the crossing point in order to record their interference. In the other dimension we use a diffraction grating and a cylindrical lens to map the wavelength onto ...
Principles, Instrumentation, and Applications of Infrared Multispectral
... images contain signals that are generated by molecules or units in a sample, plotted as a function of spectral and spatial distribution (Morris 1993). As such, a single data set consists of both spatial and spectral information. The typical dimensions of this data set range from 256 256 to 1024 ...
... images contain signals that are generated by molecules or units in a sample, plotted as a function of spectral and spatial distribution (Morris 1993). As such, a single data set consists of both spatial and spectral information. The typical dimensions of this data set range from 256 256 to 1024 ...
Atomic Spectroscopy
... which these energy shifts take place are exactly the same for both emission and absorption. Thus, atomic emission spectroscopy is a process in which the light emitted by excited atoms or ions is measured. The emission occurs when sufficient energy (which may be thermal, light or electrical) is provi ...
... which these energy shifts take place are exactly the same for both emission and absorption. Thus, atomic emission spectroscopy is a process in which the light emitted by excited atoms or ions is measured. The emission occurs when sufficient energy (which may be thermal, light or electrical) is provi ...
Antireflective Coatings
... Antireflective Coatings Single Layer MgF2 AR Coatings (SAR) Multilayer AR Coatings (VAR) Broadband Multilayer AR Coatings (WAR) Dual Wavelength Band AR Coatings (DAR) Partial Reflective Coatings Single Wavelength Band PR Coatings (SPR) Broadband PR Coatings (BPR) Beamsplitter Coatings Laser Line Pol ...
... Antireflective Coatings Single Layer MgF2 AR Coatings (SAR) Multilayer AR Coatings (VAR) Broadband Multilayer AR Coatings (WAR) Dual Wavelength Band AR Coatings (DAR) Partial Reflective Coatings Single Wavelength Band PR Coatings (SPR) Broadband PR Coatings (BPR) Beamsplitter Coatings Laser Line Pol ...
Mid Infrared digital holography and Terahertz imaging
... interferograms of non-real objects, numerically created, are used to realize real holograms to be analogically reconstructed, and Digital Holography, in which the recording process is carried out by means of digital recording devices and the reconstruction process is performed numerically. The first ...
... interferograms of non-real objects, numerically created, are used to realize real holograms to be analogically reconstructed, and Digital Holography, in which the recording process is carried out by means of digital recording devices and the reconstruction process is performed numerically. The first ...
Ultrafast Acoustic Phonon Ballistics in Semiconductor Heterostructures
... (which is normally averaged over time, electron energy, etc.), and is strongly related to ultrafast laser-induced melting of semiconductors [12], where a large enough plasma density instantaneously destabilizes and melts the lattice without it being directly heated to its melting point. The phonon p ...
... (which is normally averaged over time, electron energy, etc.), and is strongly related to ultrafast laser-induced melting of semiconductors [12], where a large enough plasma density instantaneously destabilizes and melts the lattice without it being directly heated to its melting point. The phonon p ...
`Lissajous-like` trajectories in optical tweezers
... function of micro-scale biological systems. This understanding may also facilitate the development of artificial micro-swimmers and fluid pumps, and inform the growing field of microrobotics [11–14]. Many low Reynolds number micro-particle systems have been understood with the aid of optical tweezer ...
... function of micro-scale biological systems. This understanding may also facilitate the development of artificial micro-swimmers and fluid pumps, and inform the growing field of microrobotics [11–14]. Many low Reynolds number micro-particle systems have been understood with the aid of optical tweezer ...
High-temperature ultrafast polariton parametric amplification in
... curve2 (Fig. 1). The excitation angle is chosen to allow energy and momentum conservation for the scattering between two polaritons, one into the lowest-energy state (with in-plane wavevector k = 0) and the other into a higher-energy state (2Ek = E0 + E2k has to be ful®lled, where Ek is the energy o ...
... curve2 (Fig. 1). The excitation angle is chosen to allow energy and momentum conservation for the scattering between two polaritons, one into the lowest-energy state (with in-plane wavevector k = 0) and the other into a higher-energy state (2Ek = E0 + E2k has to be ful®lled, where Ek is the energy o ...
Optical frequency modulated continuous wave (FMCW) range and
... is depleted of free carriers. In a LED, some of the recombination of electron-hole-pairs in and close to the junction gives rise to the generation of photons by so called spontaneous emission. The energy levels of the materials used to form the p-n junction determine if it is suited for photon gener ...
... is depleted of free carriers. In a LED, some of the recombination of electron-hole-pairs in and close to the junction gives rise to the generation of photons by so called spontaneous emission. The energy levels of the materials used to form the p-n junction determine if it is suited for photon gener ...
A Brief History of the Microscope and its Significance
... It was evident to users of the light microscope that there were still unsolved problems with thick, highly scattering specimens. The use of the fluorescent light microscope together with fluorescent, thick specimens was difficult; moreover, light from above and below the focal plane contributed to a ...
... It was evident to users of the light microscope that there were still unsolved problems with thick, highly scattering specimens. The use of the fluorescent light microscope together with fluorescent, thick specimens was difficult; moreover, light from above and below the focal plane contributed to a ...
Scanning Transmission Electron Microscopy
... Having described STEM imaging and analysis we return to some instrumental aspects of STEM. We discuss typical column design, and then go on to analyze the requirements for the electron gun in STEM. Consideration of the effect of the finite gun brightness brings us to a discussion of the resolution l ...
... Having described STEM imaging and analysis we return to some instrumental aspects of STEM. We discuss typical column design, and then go on to analyze the requirements for the electron gun in STEM. Consideration of the effect of the finite gun brightness brings us to a discussion of the resolution l ...
super-resolved fluorescence microscopy
... creates an evanescent wave, which penetrates about 100 nm into the medium and can be used to excite fluorescent molecules in the very small volume next to the interface. By this microscopy method the axial resolution is greatly improved in relation to that of standard microscopy but its applicabilit ...
... creates an evanescent wave, which penetrates about 100 nm into the medium and can be used to excite fluorescent molecules in the very small volume next to the interface. By this microscopy method the axial resolution is greatly improved in relation to that of standard microscopy but its applicabilit ...
S U P E R -R E S O LV... Scientific Background on the Nobel Prize in Chemistry 2014
... creates an evanescent wave, which penetrates about 100 nm into the medium and can be used to excite fluorescent molecules in the very small volume next to the interface. By this microscopy method the axial resolution is greatly improved in relation to that of standard microscopy but its applicabilit ...
... creates an evanescent wave, which penetrates about 100 nm into the medium and can be used to excite fluorescent molecules in the very small volume next to the interface. By this microscopy method the axial resolution is greatly improved in relation to that of standard microscopy but its applicabilit ...
Appendix D – Raman Spectra
... Comparing again to [7] and [8], one can notice a very noisy baseline in these results compared to those published previously. It is typical for there to be noise in the RBM range [6]. However, there is quite a considerable amount of noise in these spectra, especially that of the 532 nm spectrum. Thi ...
... Comparing again to [7] and [8], one can notice a very noisy baseline in these results compared to those published previously. It is typical for there to be noise in the RBM range [6]. However, there is quite a considerable amount of noise in these spectra, especially that of the 532 nm spectrum. Thi ...
Super-Resolution Microscopy: Interference and Pattern Techniques
... nanometer resolution, on the one hand, and light microscopy with a broad applicability, on the other hand, allowed for groundbreaking scientific achievements. Even though EM delivers unmatched resolution, light microscopy has never lost its relevance. Because of the vast propagation of fluorescent lab ...
... nanometer resolution, on the one hand, and light microscopy with a broad applicability, on the other hand, allowed for groundbreaking scientific achievements. Even though EM delivers unmatched resolution, light microscopy has never lost its relevance. Because of the vast propagation of fluorescent lab ...
Fabrication and characterization of silicone-based - lammp
... Branson) for 30 minutes. This solution should be stirred several times during this period to prevent the TiO2 from settling. During this 30 minute period the bulk PDMS and India ink can be combined. To make the highly viscous PDMS easier to work with, we transfer it from the original 1 gallon paint ...
... Branson) for 30 minutes. This solution should be stirred several times during this period to prevent the TiO2 from settling. During this 30 minute period the bulk PDMS and India ink can be combined. To make the highly viscous PDMS easier to work with, we transfer it from the original 1 gallon paint ...
Document
... The measurable quantities are the scattered and the absorbed light that is proportional to the cross section. Applying Mie theory of light scattering ...
... The measurable quantities are the scattered and the absorbed light that is proportional to the cross section. Applying Mie theory of light scattering ...
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.