Ultrafast and High Resolution Crack Detection Using Fully
... Photonic time-stretch (PTS) technique, also known as dispersive Fourier transform [1], has enabled ultrafast interrogation of fiber Bragg grating (FBG) sensors with unprecedented measurement speed of tens of MHz [2]. This is made possible by using chromatic dispersion to largely stretch an ultrashor ...
... Photonic time-stretch (PTS) technique, also known as dispersive Fourier transform [1], has enabled ultrafast interrogation of fiber Bragg grating (FBG) sensors with unprecedented measurement speed of tens of MHz [2]. This is made possible by using chromatic dispersion to largely stretch an ultrashor ...
IJCA 47A(6) 815-820
... after the removal of SDA. In order to study the effect of surfactant concentration, time and temperature dependence of the reaction, a series of samples were synthesized which varied in their surfactant concentration, time and temperature of reaction. The results have been given in Fig. 1. The sampl ...
... after the removal of SDA. In order to study the effect of surfactant concentration, time and temperature dependence of the reaction, a series of samples were synthesized which varied in their surfactant concentration, time and temperature of reaction. The results have been given in Fig. 1. The sampl ...
The Setup, Design, and Implementation of a Photoluminescence Experiment on Quantum Wells
... functional and optimized by aligning its cavity, to create an experimental setup designed for completing photoluminescence experiments, to integrate the Ti:Sapphire laser into the setup, and to begin running exp ...
... functional and optimized by aligning its cavity, to create an experimental setup designed for completing photoluminescence experiments, to integrate the Ti:Sapphire laser into the setup, and to begin running exp ...
acknowledgements
... 3a. To minimize the deformation of the IR-generated DOE during the reconstruction process, polymer films were aluminized after the hole pattern had been written in them. Aluminum film was used due to its high (IR) reflection and high thermal conductivity to increase heat transfer from the irradiated ...
... 3a. To minimize the deformation of the IR-generated DOE during the reconstruction process, polymer films were aluminized after the hole pattern had been written in them. Aluminum film was used due to its high (IR) reflection and high thermal conductivity to increase heat transfer from the irradiated ...
HeNe The Helium-Neon Laser - University of Toronto Physics
... change the mode pattern by adjusting the position and size of the diaphragm or by adjusting the laser mirrors. Modes can be recorded using the camera and computer setup. When the laser is as purely TEM00 as possible, is the output distribution a Gaussian, or still have higher modes mixed in? Using t ...
... change the mode pattern by adjusting the position and size of the diaphragm or by adjusting the laser mirrors. Modes can be recorded using the camera and computer setup. When the laser is as purely TEM00 as possible, is the output distribution a Gaussian, or still have higher modes mixed in? Using t ...
Microsoft Word Format - University of Toronto Physics
... change the mode pattern by adjusting the position and size of the diaphragm or by adjusting the laser mirrors. Modes can be recorded using the camera and computer setup. When the laser is as purely TEM00 as possible, is the output distribution a Gaussian, or still have higher modes mixed in? Using t ...
... change the mode pattern by adjusting the position and size of the diaphragm or by adjusting the laser mirrors. Modes can be recorded using the camera and computer setup. When the laser is as purely TEM00 as possible, is the output distribution a Gaussian, or still have higher modes mixed in? Using t ...
Efficient electromagnetically induced transparency COMMUNICATIONS
... first experimental observation of CPT in atomic sodium [6], EIT and CPT have been studied extensively because of many potential applications, for example frequency upconversion [7,8], lasers without inversion [9,10], and highgain phase conjugation [I 1,121. Recently, we observed EIT and enhanced fou ...
... first experimental observation of CPT in atomic sodium [6], EIT and CPT have been studied extensively because of many potential applications, for example frequency upconversion [7,8], lasers without inversion [9,10], and highgain phase conjugation [I 1,121. Recently, we observed EIT and enhanced fou ...
HIGH TRANSMISSION SILICON (HiTranTM) FOR INFRARED
... 53% for HiTranTM uncoated samples. At wavelengths just around 4 μm there is an impurity absorption coming from interstitial oxygen in Czochralski silicon. Therefore, for optical grade silicon which is mostly based on Czochralski, transmission above 50% for uncoated samples cannot be guaranteed. The ...
... 53% for HiTranTM uncoated samples. At wavelengths just around 4 μm there is an impurity absorption coming from interstitial oxygen in Czochralski silicon. Therefore, for optical grade silicon which is mostly based on Czochralski, transmission above 50% for uncoated samples cannot be guaranteed. The ...
Two-Photon Excited Fluorescence Microscopy - Spectra
... generated everywhere along the optical axis. Upon twophoton absorption at 800 nm, fluorescence is observed exclusively at the focal point of the objective. By using high numerical aperture objectives, fluorescence induced by twophoton absorption can be confined to only a few hundred nanometers of pa ...
... generated everywhere along the optical axis. Upon twophoton absorption at 800 nm, fluorescence is observed exclusively at the focal point of the objective. By using high numerical aperture objectives, fluorescence induced by twophoton absorption can be confined to only a few hundred nanometers of pa ...
Ph 76 ADVANCED PHYSICS LABORATORY — ATOMIC
... If the atoms in the vapor cell had a single excited state but two hyperfine ground states (we call them both “ground” states because neither can decay via an allowed transition), and the separation of the ground states was less than the Doppler width, then one might see a spectrum like in Figure 4. ...
... If the atoms in the vapor cell had a single excited state but two hyperfine ground states (we call them both “ground” states because neither can decay via an allowed transition), and the separation of the ground states was less than the Doppler width, then one might see a spectrum like in Figure 4. ...
Ph 76 ADVANCED PHYSICS LABORATORY — ATOMIC AND
... If the atoms in the vapor cell had a single excited state but two hyperfine ground states (we call them both “ground” states because neither can decay via an allowed transition), and the separation of the ground states was less than the Doppler width, then one might see a spectrum like in Figure 4. ...
... If the atoms in the vapor cell had a single excited state but two hyperfine ground states (we call them both “ground” states because neither can decay via an allowed transition), and the separation of the ground states was less than the Doppler width, then one might see a spectrum like in Figure 4. ...
Modeling, Simulation and Application of the Probe Beam Deflection
... • What is Photoacoustic Tomography? Photoacoustic Tomography (PAT) is accomplished by measuring the propagating acoustic energy radiated from a sample of tissue whose thermal expansion is invoked by a pulse laser. An image of the tissue composition is reconstructed based on the measurement of the of ...
... • What is Photoacoustic Tomography? Photoacoustic Tomography (PAT) is accomplished by measuring the propagating acoustic energy radiated from a sample of tissue whose thermal expansion is invoked by a pulse laser. An image of the tissue composition is reconstructed based on the measurement of the of ...
THE SEVENTH FRAMEWORK PROGRAMME
... experiments, the carrier-envelope phase of the laser system was not yet stable, so the only conclusion that could be drawn at this time Fig 3: XUV spectrum. was that the number of pulses was significantly reduced, perhaps down to 2-3 pulses. Since then, the CEP has been stabilized and the pulse dura ...
... experiments, the carrier-envelope phase of the laser system was not yet stable, so the only conclusion that could be drawn at this time Fig 3: XUV spectrum. was that the number of pulses was significantly reduced, perhaps down to 2-3 pulses. Since then, the CEP has been stabilized and the pulse dura ...
CH915: Elemental Analysis
... Chemical inertness of reaction vessels and any other material samples come into contact with Working environment ...
... Chemical inertness of reaction vessels and any other material samples come into contact with Working environment ...
ps fiber laser for CARS-authorproof-v2
... state lasers based on titanium:sapphire are perhaps the most widely used in multiphoton microscopy because they satisfy all of these requirements. However, these free space lasers are costly and require precise mechanical alignment and vibrational isolation for good performance. ...
... state lasers based on titanium:sapphire are perhaps the most widely used in multiphoton microscopy because they satisfy all of these requirements. However, these free space lasers are costly and require precise mechanical alignment and vibrational isolation for good performance. ...
Design for a Compact Tunable Ti:Sapphire Laser.
... Tunable single-mode lasers are widely used in spectroscopic, optical, and quantum-optics experiments. In the visible and near-infrared spectral ranges, dye and Ti:sapphire lasers1,2 are commercially available, but they suffer from a complex design and tend to be rather costly. In fact, continuous tu ...
... Tunable single-mode lasers are widely used in spectroscopic, optical, and quantum-optics experiments. In the visible and near-infrared spectral ranges, dye and Ti:sapphire lasers1,2 are commercially available, but they suffer from a complex design and tend to be rather costly. In fact, continuous tu ...
Biology 177: Principles of Modern Microscopy
... r is the center-to-center distance (in cm) between the donor and acceptor tD is the fluorescence lifetime of the donor in the absence of FRET ...
... r is the center-to-center distance (in cm) between the donor and acceptor tD is the fluorescence lifetime of the donor in the absence of FRET ...
X-ray phase contrast microscopy at 300 nm
... On the other hand, the propagation-based techniques [5–7] are usually less sensitive to slight phase gradients but they can be performed with simpler experimental setup, and they can be scaled down from synchrotron sources to laboratory sources. The main effects contributing to the achievable contra ...
... On the other hand, the propagation-based techniques [5–7] are usually less sensitive to slight phase gradients but they can be performed with simpler experimental setup, and they can be scaled down from synchrotron sources to laboratory sources. The main effects contributing to the achievable contra ...
Noniterative Exact Solution to the Phase Problem in Optical Imaging Implemented with Scanning Probe Microscope.
... Materials, Inc.) for which the index of refraction was known. The resulting sample could readily be analyzed by atomic force microscopy (AFM). The grooves had a varying depth of 560610 nm, with an average of ∼574 nm. The refractive index was 1.63496 at 532 nm, the illumination wavelength. In additi ...
... Materials, Inc.) for which the index of refraction was known. The resulting sample could readily be analyzed by atomic force microscopy (AFM). The grooves had a varying depth of 560610 nm, with an average of ∼574 nm. The refractive index was 1.63496 at 532 nm, the illumination wavelength. In additi ...
All solid-state continuous wave tunable blue light source by
... a Nd:YAG laser operating at 946 nm??? it is also possible to generate blue light at 473 nm. These sources have a high doubling efficiency, but they are not tunable. Compact sources generating tunable blue light could be particularly useful for spectroscopic experiments. One possibility is an intraca ...
... a Nd:YAG laser operating at 946 nm??? it is also possible to generate blue light at 473 nm. These sources have a high doubling efficiency, but they are not tunable. Compact sources generating tunable blue light could be particularly useful for spectroscopic experiments. One possibility is an intraca ...
chapter 7
... With the scanning electron microscope there is a danger of overheating the surface of observed object. This is because the electron beam does not spread over a wide area instead it is concentrated on a single point on the sample surface! Therefore, the accelerating voltage must not exceed 25 kv. 3. ...
... With the scanning electron microscope there is a danger of overheating the surface of observed object. This is because the electron beam does not spread over a wide area instead it is concentrated on a single point on the sample surface! Therefore, the accelerating voltage must not exceed 25 kv. 3. ...
High-speed optical frequency-domain imaging
... radar’) where individual spectral components of low coherence light are detected separately by use of a spectrometer and a charge-coupled device (CCD) array [9,10]. The fast readout speed of CCD arrays and the signal-to-noise (SNR) advantage of the spectral-domain OCT [11,12] make it promising for s ...
... radar’) where individual spectral components of low coherence light are detected separately by use of a spectrometer and a charge-coupled device (CCD) array [9,10]. The fast readout speed of CCD arrays and the signal-to-noise (SNR) advantage of the spectral-domain OCT [11,12] make it promising for s ...
Soft-x-ray interferometer for single-shot laser linewidth measurements
... and amplifier performance. 1,2 The prof ile of unamplified plasma lines is the result of Doppler broadening, Stark broadening, and collisional rates and can also be inf luenced by effects such as plasma turbulence.3 Radiation transport also can strongly inf luence the line prof ile, as reabsorption ...
... and amplifier performance. 1,2 The prof ile of unamplified plasma lines is the result of Doppler broadening, Stark broadening, and collisional rates and can also be inf luenced by effects such as plasma turbulence.3 Radiation transport also can strongly inf luence the line prof ile, as reabsorption ...
O A RIGINAL RTICLES
... Fig.7 shows a comparative result for the variation of the refractive index, n with “In” content. It can be seen that, the behaviour of refractive index for all of the investigated samples is similar, which is due to the normal dispersion. The refractive index, n has a higher values at low wavelength ...
... Fig.7 shows a comparative result for the variation of the refractive index, n with “In” content. It can be seen that, the behaviour of refractive index for all of the investigated samples is similar, which is due to the normal dispersion. The refractive index, n has a higher values at low wavelength ...
Surface Texture Effect on Luster of Anodized Aluminum
... image. Due to the confocal configuration of the system, only the focused wavelength will pass through the spatial filter with high efficiency, thus causing all other wavelengths to be out of focus. The spectral analysis is done using a diffraction grating. This technique deviates each wavelength at ...
... image. Due to the confocal configuration of the system, only the focused wavelength will pass through the spatial filter with high efficiency, thus causing all other wavelengths to be out of focus. The spectral analysis is done using a diffraction grating. This technique deviates each wavelength at ...
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.