Ultrafast Nonlinear Optical Signals Viewed from the Molecule`s
... By using a quantum description of the field we show that examination of the relevant processes from the viewpoint of the material naturally leads to a description in terms of transition amplitudes rather than susceptibilities. Once the optical signals have been recast in terms of these transition am ...
... By using a quantum description of the field we show that examination of the relevant processes from the viewpoint of the material naturally leads to a description in terms of transition amplitudes rather than susceptibilities. Once the optical signals have been recast in terms of these transition am ...
The optics and performance of dual-focus fluorescence correlation
... overlapping foci with a fixed distance between them [10]. By measuring the ACF from each focus as well as the cross-correlation function (CCF) between both foci and applying a global fit to all curves, one can extract absolute values of diffusion coefficient if the interfocal distance is well known. ...
... overlapping foci with a fixed distance between them [10]. By measuring the ACF from each focus as well as the cross-correlation function (CCF) between both foci and applying a global fit to all curves, one can extract absolute values of diffusion coefficient if the interfocal distance is well known. ...
Using the Spectrophotometer
... • Wipe off your cuvette containing the blank solution with a KimWipe and place it in the single cuvette holder or in position 1 of the multiple cuvette holder in the sample compartment. Make sure that position 1 is aligned with the light source. Be sure to have the clear faces of the cuvette facing ...
... • Wipe off your cuvette containing the blank solution with a KimWipe and place it in the single cuvette holder or in position 1 of the multiple cuvette holder in the sample compartment. Make sure that position 1 is aligned with the light source. Be sure to have the clear faces of the cuvette facing ...
Chapter 5 Experimental Apparatus II
... to suppression of the absorption of rescattered light in the MOT. The second-hand absorption of photons that have already been spontaneously scattered by MOT atoms, or “radiation trapping,” leads to temperature and density limitations in free-space MOTs [Sesko91; Ellinger94]. These rescattering even ...
... to suppression of the absorption of rescattered light in the MOT. The second-hand absorption of photons that have already been spontaneously scattered by MOT atoms, or “radiation trapping,” leads to temperature and density limitations in free-space MOTs [Sesko91; Ellinger94]. These rescattering even ...
Generation of radially and azimuthally polarized light by optical
... For optical measurements, the samples are illuminated from the metal film side with a tungsten halogen white light source, and the transmitted light is collected by using a 40 × objective (NA = 0.6) on an inverted optical microscope. Although the subwavelength radial periods of the nanoslits exclude ...
... For optical measurements, the samples are illuminated from the metal film side with a tungsten halogen white light source, and the transmitted light is collected by using a 40 × objective (NA = 0.6) on an inverted optical microscope. Although the subwavelength radial periods of the nanoslits exclude ...
Depth of field and improved resolution of slit-scan flow systems
... development was the application of a flow cuvette in which the cells were moving through the detection volume3. These early microscope based flow cytometers used microscope objectives with low numerical aperture in combination with a cylinder lens to obtain an asymmetrical, slit-like shaped focus. I ...
... development was the application of a flow cuvette in which the cells were moving through the detection volume3. These early microscope based flow cytometers used microscope objectives with low numerical aperture in combination with a cylinder lens to obtain an asymmetrical, slit-like shaped focus. I ...
Laser Bleaching of Carbon Nanotubes Suspension in
... 1748 cm-1 – to the lactones, the peaks with the shifts of 1163 cm-1 and 1059 cm-1 – to the ethers (R‑O‑C‑O‑R). It is difficult to interpret the peaks with the shifts of 816 cm-1, 713 cm-1, 650 cm-1, 541 cm-1. However, one can attribute the frequency range 720‑740 cm-1 to the methylene groups (-CH2-C ...
... 1748 cm-1 – to the lactones, the peaks with the shifts of 1163 cm-1 and 1059 cm-1 – to the ethers (R‑O‑C‑O‑R). It is difficult to interpret the peaks with the shifts of 816 cm-1, 713 cm-1, 650 cm-1, 541 cm-1. However, one can attribute the frequency range 720‑740 cm-1 to the methylene groups (-CH2-C ...
The Construction and Characterization of a Magneto
... atomic sample, on the other hand, is a superior form of storage medium due both to its weak internal and external interactions (which leads to increased coherence lifetime) and its narrow velocity distribution (which means nearly all the atoms in the sample are in resonance with the light field). Al ...
... atomic sample, on the other hand, is a superior form of storage medium due both to its weak internal and external interactions (which leads to increased coherence lifetime) and its narrow velocity distribution (which means nearly all the atoms in the sample are in resonance with the light field). Al ...
Bistable localized emission states in a 200 μm broad
... chosen, at locations away from the nearto the detection part, and also to allow the field boundaries and defect lines. The injected field to enter the cavity. VCSEL was biased to be within the bistability range of these two spots. Figure 2 displays near-field intensity distributions during the exper ...
... chosen, at locations away from the nearto the detection part, and also to allow the field boundaries and defect lines. The injected field to enter the cavity. VCSEL was biased to be within the bistability range of these two spots. Figure 2 displays near-field intensity distributions during the exper ...
Tapered Fiber Fabrication
... internal reflection involves placing two highly polished surfaces within about one wavelength of each other so that the second can “pick up” the field from the first [Heald95]. Tapered fibers increase the strength of the evanescent field by confining the light into a small space. This increases the ...
... internal reflection involves placing two highly polished surfaces within about one wavelength of each other so that the second can “pick up” the field from the first [Heald95]. Tapered fibers increase the strength of the evanescent field by confining the light into a small space. This increases the ...
Measuring amplitude and phase of light emerging from
... In general, a high numerical aperture (NA) of the observation objective ensures high-resolution of the amplitude and phase measurements. Moreover, high magnification provides more pixels on an image sensor for small fields. We use highly corrected large NA objectives, e.g, a 100X / NA 0.9 dry objec ...
... In general, a high numerical aperture (NA) of the observation objective ensures high-resolution of the amplitude and phase measurements. Moreover, high magnification provides more pixels on an image sensor for small fields. We use highly corrected large NA objectives, e.g, a 100X / NA 0.9 dry objec ...
Biomedical Imaging and Applied Optics Laboratory
... spheroidal scatterers whose interactions with light are governed by Mie theory. Mie theory provides an analytical closed-form description of optical scattering from single spheroidal particles as a function of particle size, refractive index, wavelength, observation angle, and optical polarization. ...
... spheroidal scatterers whose interactions with light are governed by Mie theory. Mie theory provides an analytical closed-form description of optical scattering from single spheroidal particles as a function of particle size, refractive index, wavelength, observation angle, and optical polarization. ...
Optical tweezers using a diode laser
... have carefully distinguished amongst pressure (due to reflection and absorption), and the gradient forces (due to refraction), and radiometer forces due to thermal gradients. (Optical trapping occurs where the net gradient and radiation pressure balance each other.) The forces tend to be perpendicul ...
... have carefully distinguished amongst pressure (due to reflection and absorption), and the gradient forces (due to refraction), and radiometer forces due to thermal gradients. (Optical trapping occurs where the net gradient and radiation pressure balance each other.) The forces tend to be perpendicul ...
Displacement Measuring Interferometry
... 4.9 Summary: Using Displacement Interferometry............................................................. 221 References......................................................................................................................................222 ...
... 4.9 Summary: Using Displacement Interferometry............................................................. 221 References......................................................................................................................................222 ...
Optimization of axial resolution in a confocal microscope with
... media by confocal systems with off-axis illumination and detection have been presented [12,13]. However, although these studies have demonstrated the power of off-axis geometry, this approach does not include diffraction effects that are the subject of this study. Unfortunately, other methods of tre ...
... media by confocal systems with off-axis illumination and detection have been presented [12,13]. However, although these studies have demonstrated the power of off-axis geometry, this approach does not include diffraction effects that are the subject of this study. Unfortunately, other methods of tre ...
Diffraction
... When the central maximum of one image falls on the first minimum of the other image, the images are said to be just resolved. For a slit with width a, the limiting angle of resolution is: min = /a. For a circular aperture of diameter D, the limiting angle of resolution is: min = 1.22(/D). ...
... When the central maximum of one image falls on the first minimum of the other image, the images are said to be just resolved. For a slit with width a, the limiting angle of resolution is: min = /a. For a circular aperture of diameter D, the limiting angle of resolution is: min = 1.22(/D). ...
JOURNAL OF T O THE EUROPEAN OPTI CAL SOCI ETY
... A homocentric beam of light rays leaves an infinite small surface element dxdy containing the point ( x, y) of the planar source-object. After passing an entrance pupil of the optical system it is collected at the optically conjugated infinite small surface element dx 0 dy0 containing the point ( x ...
... A homocentric beam of light rays leaves an infinite small surface element dxdy containing the point ( x, y) of the planar source-object. After passing an entrance pupil of the optical system it is collected at the optically conjugated infinite small surface element dx 0 dy0 containing the point ( x ...
fourier transform infra-red (ftir) spectroscopy
... levels. Infrared spectroscopy is the study of interactions between matter and electromagnetic fields in the IR region. In this spectral region, the EM waves mainly couple with the molecular vibrations. In other words, a molecule can be excited to a higher vibrational state by absorbing IR radiation. ...
... levels. Infrared spectroscopy is the study of interactions between matter and electromagnetic fields in the IR region. In this spectral region, the EM waves mainly couple with the molecular vibrations. In other words, a molecule can be excited to a higher vibrational state by absorbing IR radiation. ...
Catalyst characterization: characterization techniques
... By microscopy we intend both the conventional optical and the modem electron microscopies: i.e. SEM (scanning electron microscopy) and TEM (transmission electron microscopy), with increasing resolution power up to few Angstroms. They are substantially qualitative techniques. However they have, in re ...
... By microscopy we intend both the conventional optical and the modem electron microscopies: i.e. SEM (scanning electron microscopy) and TEM (transmission electron microscopy), with increasing resolution power up to few Angstroms. They are substantially qualitative techniques. However they have, in re ...
Kuhnke Laser Shutter DS200X8 - Kendrion Kuhnke Automation GmbH
... DS200X8 can be connected to a water-based cooling system. In ...
... DS200X8 can be connected to a water-based cooling system. In ...
Optical amplifiers
... will have repeated bouts of physical sickness. So when you pump this guy with, say, a pint of beer, he is excited into a higher state of drunkenness, just as the erbium ions are excited into higher energy states when pumped by a laser. If you continue the pumping, feeding the student with beer and t ...
... will have repeated bouts of physical sickness. So when you pump this guy with, say, a pint of beer, he is excited into a higher state of drunkenness, just as the erbium ions are excited into higher energy states when pumped by a laser. If you continue the pumping, feeding the student with beer and t ...
EE 420 - Optical Fiber Communications Lab
... 4- Align the fibers ends. The two fibers must be first visually aligned. Use the following procedure for the visual alignment: - Use the magnifying glass as an aid, because the fibers’ tips may be hard to see and use a black background for much improved visibility. Use the black plate and screen to ...
... 4- Align the fibers ends. The two fibers must be first visually aligned. Use the following procedure for the visual alignment: - Use the magnifying glass as an aid, because the fibers’ tips may be hard to see and use a black background for much improved visibility. Use the black plate and screen to ...
Diffuse Reflectance Spectroscopy
... through the sample. Using model-based techniques or statistical approaches such as multivariate analysis, optical properties of the sample can be extracted from light distribution in tissue that further leads to valuable diagnostics Fig. 1.1: Basic concept behind information such as the health state ...
... through the sample. Using model-based techniques or statistical approaches such as multivariate analysis, optical properties of the sample can be extracted from light distribution in tissue that further leads to valuable diagnostics Fig. 1.1: Basic concept behind information such as the health state ...
Technological Education Institute (TEI) of Piraeus
... Fiber optic sensors: distributed fiber sensors Raman and stimulated Brillouin scatter distributed optical sensors - Modification of the spectral content of the light propagating through the fiber in response to an external measurand - The measurand is determined by evaluating the spectral content ...
... Fiber optic sensors: distributed fiber sensors Raman and stimulated Brillouin scatter distributed optical sensors - Modification of the spectral content of the light propagating through the fiber in response to an external measurand - The measurand is determined by evaluating the spectral content ...
Defect-tolerant extreme ultraviolet nanoscale printing L. Urbanski, * A. Isoyan, A. Stein,
... rate of 1 Hz. The exposure time can be reduced increasing the repetition rate of the laser to 4 Hz [9]. After the exposure, the resist was developed and inspected with an atomic force microscope (AFM). The AFM scans of the prints in the sample are illustrated in Figs. 3(c) and 3(d). Both scans are 2 ...
... rate of 1 Hz. The exposure time can be reduced increasing the repetition rate of the laser to 4 Hz [9]. After the exposure, the resist was developed and inspected with an atomic force microscope (AFM). The AFM scans of the prints in the sample are illustrated in Figs. 3(c) and 3(d). Both scans are 2 ...