Ultrafast and High Resolution Crack Detection Using Fully
... speed identical to the repetition rate of the optical pulse train [3]. With this greatly improved temporal resolution, PTS-based FBG sensors have now found new applications in studying dynamic phenomena and monitoring dynamic extremes of materials [4]. Most recently, research efforts have been made ...
... speed identical to the repetition rate of the optical pulse train [3]. With this greatly improved temporal resolution, PTS-based FBG sensors have now found new applications in studying dynamic phenomena and monitoring dynamic extremes of materials [4]. Most recently, research efforts have been made ...
Accurate predictive model for twisted nematic liquid crystal devices. Application
... electrically. The spatial modulation may be one-, two- or even three-dimensional. The most extended application is as a two-dimensional display for visualization purposes. The SLMs play also a critical role in optical data processing when real time operation is needed. In communication technologies ...
... electrically. The spatial modulation may be one-, two- or even three-dimensional. The most extended application is as a two-dimensional display for visualization purposes. The SLMs play also a critical role in optical data processing when real time operation is needed. In communication technologies ...
Instruments for Optical Spectroscopy-Web
... proportional to the root of the number of spectral elements M and the root of the measurement time, with the number of spectral elements M calculated as quotient of measurement range versus spectral ...
... proportional to the root of the number of spectral elements M and the root of the measurement time, with the number of spectral elements M calculated as quotient of measurement range versus spectral ...
Diamond chemical-vapor deposition on optical fibers for
... of true quantum elements with classical photonic structures. As such, these devices would build upon, but are qualitatively different from classical optically active structures such as difference frequency generation 共DFG兲 lasers. Toward this aim, we report here the incorporation of optically active ...
... of true quantum elements with classical photonic structures. As such, these devices would build upon, but are qualitatively different from classical optically active structures such as difference frequency generation 共DFG兲 lasers. Toward this aim, we report here the incorporation of optically active ...
Theoretical analysis of phase-matched second
... SHG and OPO in the m ⫽ 0 mode are not significantly changed from those of the bulk material given in Refs. 14 –16. However, the phase-matching angles for SHG coupling from the m ⫽ 0 to the m ⫽ 2 mode for a 16-m guide shown in Fig. 2 are significantly different and much more attractive than those of ...
... SHG and OPO in the m ⫽ 0 mode are not significantly changed from those of the bulk material given in Refs. 14 –16. However, the phase-matching angles for SHG coupling from the m ⫽ 0 to the m ⫽ 2 mode for a 16-m guide shown in Fig. 2 are significantly different and much more attractive than those of ...
Optical power - WordPress.com
... --there are 4 types of lasers 1)Gas lasers: Helium and Neon enclosed in a glass tube laser, CO2 lasers --Output is continuous mono chromatic (one colour) 2)Liquid lasers: organic dye enclosed in a glass tube for an active medium --A powerful pulse of light excites the organic dye 3)Solid ...
... --there are 4 types of lasers 1)Gas lasers: Helium and Neon enclosed in a glass tube laser, CO2 lasers --Output is continuous mono chromatic (one colour) 2)Liquid lasers: organic dye enclosed in a glass tube for an active medium --A powerful pulse of light excites the organic dye 3)Solid ...
OSA journals template (MSWORD) - HAL
... measured the output spectra behind a narrow pinhole placed at different positions in the beam. For these measurements we used argon at 1 atm, with input pulse energy of 12.7 mJ. Total output energy was 9 mJ. Figure 3 shows the spectra at different y-positions, as well as the total pulse energy conta ...
... measured the output spectra behind a narrow pinhole placed at different positions in the beam. For these measurements we used argon at 1 atm, with input pulse energy of 12.7 mJ. Total output energy was 9 mJ. Figure 3 shows the spectra at different y-positions, as well as the total pulse energy conta ...
LETTERS
... Our first experiments were performed on Bosecondensed atoms released suddenly from the TOP trap. The trap is turned off in 50 ms and the BEC undergoes expansion driven by the mean-field repulsion between the atoms. After a few characteristic times t svx vy vz d21y3 , the mean field is negligible a ...
... Our first experiments were performed on Bosecondensed atoms released suddenly from the TOP trap. The trap is turned off in 50 ms and the BEC undergoes expansion driven by the mean-field repulsion between the atoms. After a few characteristic times t svx vy vz d21y3 , the mean field is negligible a ...
Measurement of Optical Characteristic of Plastic by UH4150
... Plastic is a highly transparent, light, and durable material. For the optical evaluation of an object, such as light transmittance property, color, and transparency, the transmission spectrum and reflectance spectrum are measured by a spectrophotometer. These measurements do not only provide the opt ...
... Plastic is a highly transparent, light, and durable material. For the optical evaluation of an object, such as light transmittance property, color, and transparency, the transmission spectrum and reflectance spectrum are measured by a spectrophotometer. These measurements do not only provide the opt ...
HeNe The Helium-Neon Laser - University of Toronto Physics
... Observe and identify several of the transverse modes. Simply look at the beam on the far wall and 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 TEM0 ...
... Observe and identify several of the transverse modes. Simply look at the beam on the far wall and 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 TEM0 ...
Microsoft Word Format - University of Toronto Physics
... Observe and identify several of the transverse modes. Simply look at the beam on the far wall and 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 TEM0 ...
... Observe and identify several of the transverse modes. Simply look at the beam on the far wall and 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 TEM0 ...
Equilibrium Mode Distribution and Steady State Distribution in Step
... Typically, optical implementations of long-distance communications systems (greater than 1 km) employ GOF. Transmission characteristics of step-index optical fibers depend strongly upon the differential mode attenuation and the rate of mode coupling. The latter represents power transfer from lower t ...
... Typically, optical implementations of long-distance communications systems (greater than 1 km) employ GOF. Transmission characteristics of step-index optical fibers depend strongly upon the differential mode attenuation and the rate of mode coupling. The latter represents power transfer from lower t ...
Synchronized ti scattering microscopy
... The experimental setup of the time-lens source synchronized to a Ti:Sa mode-locked laser (Mira 900, Coherent) is shown in Fig. 1 (dotted box). The GaAs photodetector (ET-4000, EOT) converts the 76-MHz, 2-ps optical pulse train into an RF pulse train, which is then divided into two branches. One bran ...
... The experimental setup of the time-lens source synchronized to a Ti:Sa mode-locked laser (Mira 900, Coherent) is shown in Fig. 1 (dotted box). The GaAs photodetector (ET-4000, EOT) converts the 76-MHz, 2-ps optical pulse train into an RF pulse train, which is then divided into two branches. One bran ...
PP_SSL_Modeling - LAS
... The round-trip condition delivers a simple quadratic equation for the q parameter. ...
... The round-trip condition delivers a simple quadratic equation for the q parameter. ...
РЕФЕРАТ
... COHERENT SPECTRUM ANALYZER WITH MATRIX DETECTOR Object of study is the process of converting the light field in the coherent optical spectrum analyzers by performing spatial Fourier transform of the test signal. The subject of the study is the generalized characteristics of the coherent spectrum ana ...
... COHERENT SPECTRUM ANALYZER WITH MATRIX DETECTOR Object of study is the process of converting the light field in the coherent optical spectrum analyzers by performing spatial Fourier transform of the test signal. The subject of the study is the generalized characteristics of the coherent spectrum ana ...
Continuous wave Nd:YAG channel waveguide laser produced by
... Because of the energy and momentum mismatch between protons and electrons in the target material, the protons will maintain a straight pathway and cause little proximity effect as energy obtained by secondary electrons will be low [9]. This makes PBW an efficient technology to fabricate 3D high aspe ...
... Because of the energy and momentum mismatch between protons and electrons in the target material, the protons will maintain a straight pathway and cause little proximity effect as energy obtained by secondary electrons will be low [9]. This makes PBW an efficient technology to fabricate 3D high aspe ...
Optics - Frederiksen
... Profiled rail Short section of the same profile as used in the optical bench – without ruler, base and sliding saddles. Length 370 mm. 2946.35 Profiled rail ...
... Profiled rail Short section of the same profile as used in the optical bench – without ruler, base and sliding saddles. Length 370 mm. 2946.35 Profiled rail ...
Paper
... respectively. Recently, Bose-Einstein condensates illuminated by an off-resonant laser beam (“dressed condensates”) were used to realize phase-coherent amplification of matter waves [1,2]. The amplification process involved the scattering of a condensate atom and a laser photon into an atom in a rec ...
... respectively. Recently, Bose-Einstein condensates illuminated by an off-resonant laser beam (“dressed condensates”) were used to realize phase-coherent amplification of matter waves [1,2]. The amplification process involved the scattering of a condensate atom and a laser photon into an atom in a rec ...
Optical losses
... compositional inhomogeneity, the chemical composition of the material varies. The net effect from either inhomogeneity is a fluctuation in the refractive index. As a rule of thumb, if the scale of these fluctuations is on the order of l/10 or less, each irregularity acts as a scattering center. This ...
... compositional inhomogeneity, the chemical composition of the material varies. The net effect from either inhomogeneity is a fluctuation in the refractive index. As a rule of thumb, if the scale of these fluctuations is on the order of l/10 or less, each irregularity acts as a scattering center. This ...
Experiment 1: Law of Geometrical Optics
... 5. Find the refractive index for the following media: water, plastic, glass. 6. Calculate the critical angle for an air-water interface assuming nair = 1. 7. Can internal reflection be used to determine the refractive index of a medium? If so, how? 8. Complete the following table: find the theoretic ...
... 5. Find the refractive index for the following media: water, plastic, glass. 6. Calculate the critical angle for an air-water interface assuming nair = 1. 7. Can internal reflection be used to determine the refractive index of a medium? If so, how? 8. Complete the following table: find the theoretic ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.