Measuring Human Chromosomes using Confocal microscopy
... confocal microscopy and the volume measuring will be compared and analysed in ptychography with the same spread. Therefore a slide with same size and shape attached with thin and transparent grid map was prepared. Using the LEXT software program provided by Olympus OLS4100 confocal laser microscope, ...
... confocal microscopy and the volume measuring will be compared and analysed in ptychography with the same spread. Therefore a slide with same size and shape attached with thin and transparent grid map was prepared. Using the LEXT software program provided by Olympus OLS4100 confocal laser microscope, ...
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... each active device. Prior work has demonstrated that spatial profiling of the surface temperature of individual active optoelectronic devices using micro-thermocouples can be used to determine the internal optical power distribution and to characterize optical properties such as gain, quantum effici ...
... each active device. Prior work has demonstrated that spatial profiling of the surface temperature of individual active optoelectronic devices using micro-thermocouples can be used to determine the internal optical power distribution and to characterize optical properties such as gain, quantum effici ...
Modulation transfer function model of a Scophony infrared scene
... detector in the image plane, the transfer function of the amplifier electronics, and a term caused by Bragg-angle detuning over the bandwidth of the amplitude modulation (AM) video signal driving the AO cell. The finite bandwidth of the input video signal caused a spread in the Bragg angle required ...
... detector in the image plane, the transfer function of the amplifier electronics, and a term caused by Bragg-angle detuning over the bandwidth of the amplitude modulation (AM) video signal driving the AO cell. The finite bandwidth of the input video signal caused a spread in the Bragg angle required ...
View PDF - Adelphi University
... Paper 070447 received May 24, 2007; accepted for publication Jul. 18, 2007; published online Dec. 18, 2007. ...
... Paper 070447 received May 24, 2007; accepted for publication Jul. 18, 2007; published online Dec. 18, 2007. ...
Photoacoustic microscopy with 2
... As an emerging high-resolution imaging modality, photoacoustic microscopy 共PAM兲 images optically absorbing microstructures by detecting transient acoustic waves generated from laser-induced thermal-elastic expansion.1 Current mainstream high-resolution optical imaging techniques mainly include confo ...
... As an emerging high-resolution imaging modality, photoacoustic microscopy 共PAM兲 images optically absorbing microstructures by detecting transient acoustic waves generated from laser-induced thermal-elastic expansion.1 Current mainstream high-resolution optical imaging techniques mainly include confo ...
Light-induced vibration in the hearing organ Linköping University Post Print
... surface of the bead moved toward the laser beam and then returned to its equilibrium position as the light turned off (Figure 2a). This polarity of motion is consistent with thermal expansion of the excited bead and tissues. Following this initial spike of movement were physiologically vulnerable, g ...
... surface of the bead moved toward the laser beam and then returned to its equilibrium position as the light turned off (Figure 2a). This polarity of motion is consistent with thermal expansion of the excited bead and tissues. Following this initial spike of movement were physiologically vulnerable, g ...
Signal-to-Signal-to-Noise-Ratio of Full-Field Fourier
... In 3F-OCT we use a holographic interferometer instead of the Michelson interferometer typically used for “flying spot” OCT configurations. Here for simplicity we describe 3F-OCT in the transmission mode (extendable to reflection mode). Our optical source is launched into a fiber-optic coupler which ...
... In 3F-OCT we use a holographic interferometer instead of the Michelson interferometer typically used for “flying spot” OCT configurations. Here for simplicity we describe 3F-OCT in the transmission mode (extendable to reflection mode). Our optical source is launched into a fiber-optic coupler which ...
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... comes at the expense of greater propagation loss as the electric field overlaps more strongly with the metal. Absorption loss is especially severe on high-index semiconductor substrates, such as Si or InP, where the SPP mode confinement is higher than on dielectric substrates, and propagation loss i ...
... comes at the expense of greater propagation loss as the electric field overlaps more strongly with the metal. Absorption loss is especially severe on high-index semiconductor substrates, such as Si or InP, where the SPP mode confinement is higher than on dielectric substrates, and propagation loss i ...
Fiber Bragg Grating sensors to measure the coefficient of
... the PMMA for use in cryogenic sensors has been also checked. The FBG sensors have several and well-known advantages: compactness, intrinsic multiplexing, lower cost of the devices for the data acquisition, noise immunity (especially with respect to the electromagnetic fields), low attenuation of the ...
... the PMMA for use in cryogenic sensors has been also checked. The FBG sensors have several and well-known advantages: compactness, intrinsic multiplexing, lower cost of the devices for the data acquisition, noise immunity (especially with respect to the electromagnetic fields), low attenuation of the ...
Dispersion measurements with white-light interferometry
... is often categorized as incoherent light and is therefore presumed to be of little use in a modern optics lab where lasers abound. Indeed, if one is to define temporal coherence as the ability of an electric field to interfere with a delayed version of itself, then the light from a helium –neon lase ...
... is often categorized as incoherent light and is therefore presumed to be of little use in a modern optics lab where lasers abound. Indeed, if one is to define temporal coherence as the ability of an electric field to interfere with a delayed version of itself, then the light from a helium –neon lase ...
Time-resolved detection of propagating Lamb waves in thin
... only allow to excite ultra-high frequency modes but also affect the eigenmodes of the membrane. Although the difference in longitudinal impedances of Al and Si is negligible, the difference in shear impedances is significant and, thus, the modification of the spectra of the Lamb modes in the presenc ...
... only allow to excite ultra-high frequency modes but also affect the eigenmodes of the membrane. Although the difference in longitudinal impedances of Al and Si is negligible, the difference in shear impedances is significant and, thus, the modification of the spectra of the Lamb modes in the presenc ...
Shock temperature measurements in metals
... or gaps,betweenthe sampleand anvil. At a givenHugoniot pressurean initially poroussampleattains highertemperatures than a sample of ideal crystal density. Samplematerial adjacent to a gap is multiply shockedand alsoreaches anomalouslyhigh temperatures. In addition, it is desirable for the samplesto ...
... or gaps,betweenthe sampleand anvil. At a givenHugoniot pressurean initially poroussampleattains highertemperatures than a sample of ideal crystal density. Samplematerial adjacent to a gap is multiply shockedand alsoreaches anomalouslyhigh temperatures. In addition, it is desirable for the samplesto ...
Noise-related resolution limit of dispersion measurements with white
... spectrally resolved interferometry are given in Section 6); however, a detailed comparison between spectrally resolved and spectrally integrated detection methods goes beyond the scope of this paper. Spectral resolution, the accuracy of GDD determination, and the measurement time are the key paramet ...
... spectrally resolved interferometry are given in Section 6); however, a detailed comparison between spectrally resolved and spectrally integrated detection methods goes beyond the scope of this paper. Spectral resolution, the accuracy of GDD determination, and the measurement time are the key paramet ...
Picosecond-resolution soft-x-ray laser plasma interferometry
... dispersion of the soft-x-ray laser on its ruled section. This IR laser diode for alignment is chosen to have a temporal coherence length similar to or shorter than that of the soft-x-ray laser 共⬃400 m 1兾e HW兲.17 This ensures that the arm lengths are matched with sufficient precision to warrant the ...
... dispersion of the soft-x-ray laser on its ruled section. This IR laser diode for alignment is chosen to have a temporal coherence length similar to or shorter than that of the soft-x-ray laser 共⬃400 m 1兾e HW兲.17 This ensures that the arm lengths are matched with sufficient precision to warrant the ...
Paper Title
... In our recent works we have shown already that IR laser radiation could be used for direct writing of microlenses on the polymer piezoelectric substrates. Now we’ll discuss a possibility of acoustic waves generation in polymer piezoelectric films with use of IR laser beam. Such a possibility makes p ...
... In our recent works we have shown already that IR laser radiation could be used for direct writing of microlenses on the polymer piezoelectric substrates. Now we’ll discuss a possibility of acoustic waves generation in polymer piezoelectric films with use of IR laser beam. Such a possibility makes p ...
Single-shot measurement of a 52 fs pulse
... prisms." The advantages of using these prisms are a very high transmission ratio (>92%) and a good compactness (50 X 50 cm2). With this system we have ...
... prisms." The advantages of using these prisms are a very high transmission ratio (>92%) and a good compactness (50 X 50 cm2). With this system we have ...
E, EE - OSA Publishing
... emitted light comes from aperturing by the boundaries of the gain medium, just as coherent light results from aperturing of an incoherent source such as an incandescent lamp. The description of amplified spontaneous emission (ASE) devices is, however, more complex, in part because the source and the ...
... emitted light comes from aperturing by the boundaries of the gain medium, just as coherent light results from aperturing of an incoherent source such as an incandescent lamp. The description of amplified spontaneous emission (ASE) devices is, however, more complex, in part because the source and the ...
www.osa-opn.org 24 | OPN October 2008 Two positively charged
... The most intuitive way to understand the extreme nonlinear interaction that leads to attosecond pulses is through the semi-classical re-collision model. A strong infrared light pulse illuminating an atom or molecule creates a “free” electron wave packet by multiphoton ionization, usually approximate ...
... The most intuitive way to understand the extreme nonlinear interaction that leads to attosecond pulses is through the semi-classical re-collision model. A strong infrared light pulse illuminating an atom or molecule creates a “free” electron wave packet by multiphoton ionization, usually approximate ...
Report - Physics - University of Arkansas
... literature that pulsed Ti:Sapphire systems produce an output power of 0.1 to 3 W of power, while continuous wave systems can maintain a power of several watts. The pulse width of Ti:Sapphire systems is generally on the order of 100 fs, though several research setups of the lasers have approached wid ...
... literature that pulsed Ti:Sapphire systems produce an output power of 0.1 to 3 W of power, while continuous wave systems can maintain a power of several watts. The pulse width of Ti:Sapphire systems is generally on the order of 100 fs, though several research setups of the lasers have approached wid ...
Helium Neon Laser - Educational Lasers
... the fine-adjustment screws of the etalon holder. When increasing the tilting angle the laser turns first off, before it emits again in the next higher longitudinal mode. This test can be done up to more than 10 mode orders. In addition, longitudinal modes and their frequency distance can be determin ...
... the fine-adjustment screws of the etalon holder. When increasing the tilting angle the laser turns first off, before it emits again in the next higher longitudinal mode. This test can be done up to more than 10 mode orders. In addition, longitudinal modes and their frequency distance can be determin ...
Mechanical mapping with chemical specificity by confocal Brillouin
... stabilized against lateral drifts, which may occur during long time acquisitions. This is realized selecting a reference area within the illuminated region (through the red-yellow boxes in the figures) and using an image recognition software which supplies a feedback signal to the positioning stage. ...
... stabilized against lateral drifts, which may occur during long time acquisitions. This is realized selecting a reference area within the illuminated region (through the red-yellow boxes in the figures) and using an image recognition software which supplies a feedback signal to the positioning stage. ...
Advanced Microscopy
... confocal microscopy - lateral resolution illumination and imaging is done with the same lens psf is a the product of illumination and detection psf ! pconf (ξ, ρ) = p(ξ, ρ) × p(ξ, ρ) confocal detection with an infinitely small detector (pinhole) ...
... confocal microscopy - lateral resolution illumination and imaging is done with the same lens psf is a the product of illumination and detection psf ! pconf (ξ, ρ) = p(ξ, ρ) × p(ξ, ρ) confocal detection with an infinitely small detector (pinhole) ...
IOSR Journal of Applied Physics (IOSR-JAP)
... An infrared camera or thermal imaging camera is a device that forms an image using infrared radiation emitted by object and its surrounding. Due to its reliance on variation of self-emitted radiation of scene contents rather than reflected radiation. It is superior to conventional cameras in many re ...
... An infrared camera or thermal imaging camera is a device that forms an image using infrared radiation emitted by object and its surrounding. Due to its reliance on variation of self-emitted radiation of scene contents rather than reflected radiation. It is superior to conventional cameras in many re ...
Total Internal Reflection Spectroscopy for Studying Soft Matter
... two main approaches to achieving surface selectivity. The first is to use a form of spectroscopy where the selection rules—arising from the symmetry of the molecular transitions—mean that only molecules at an interface can be detected. Second-order nonlinear optical techniques, such as sum-frequency ...
... two main approaches to achieving surface selectivity. The first is to use a form of spectroscopy where the selection rules—arising from the symmetry of the molecular transitions—mean that only molecules at an interface can be detected. Second-order nonlinear optical techniques, such as sum-frequency ...
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.