Laser Cutting
... were all exact copies of each other. This meant that together they formed a single electro-magnetic wave. This is known as coherent light. One of the special properties of this coherent light is that it is all at a single frequency. In terms of light, its frequency is its colour. So it is mono-chrom ...
... were all exact copies of each other. This meant that together they formed a single electro-magnetic wave. This is known as coherent light. One of the special properties of this coherent light is that it is all at a single frequency. In terms of light, its frequency is its colour. So it is mono-chrom ...
Student Study Guide
... A laser is a device that controls the way that energized atoms release photons. Although there are many types of lasers, all have certain essential features. In a laser, the lasing medium is “pumped” to get the atoms into an excited state. Typically, very intense flashes of light or ...
... A laser is a device that controls the way that energized atoms release photons. Although there are many types of lasers, all have certain essential features. In a laser, the lasing medium is “pumped” to get the atoms into an excited state. Typically, very intense flashes of light or ...
Aalborg Universitet Near-field electrospinning of dielectric-loaded surface plasmon polariton waveguides
... plasmons. Various waveguiding structures for surface plasmons, fabricated with different techniques, such as metal stripes [3–5] and v-grooves [6,7] have already been investigated. The strong lateral confinement can be also achieved by depositing polymer stripes on a metal surface and using them as ...
... plasmons. Various waveguiding structures for surface plasmons, fabricated with different techniques, such as metal stripes [3–5] and v-grooves [6,7] have already been investigated. The strong lateral confinement can be also achieved by depositing polymer stripes on a metal surface and using them as ...
Nondegenerate optical Kerr effect in semiconductors
... We use the 2-color Z-scan [7], [16] to measure the nondegenerate n 2 in ZnSe and ZnS. A Q-switched and modelocked Nd:YAG laser is used to generate single tp::::: 83 ps (FWHM) pulses at >. = 1.06 J.Lm as the excitation beam. Simultaneously, the second-harmonic of the same laser at >. = 532 nm serves ...
... We use the 2-color Z-scan [7], [16] to measure the nondegenerate n 2 in ZnSe and ZnS. A Q-switched and modelocked Nd:YAG laser is used to generate single tp::::: 83 ps (FWHM) pulses at >. = 1.06 J.Lm as the excitation beam. Simultaneously, the second-harmonic of the same laser at >. = 532 nm serves ...
Sample pages 2 PDF
... Actually, these structures can co-exist during synthesis of one or other nanoparticle. The essence of the problem is fine regulation of growth of seed populations for producing metal nanoparticles with desired shape and morphology. The possibilities for its realization are provided by thermodynamic ...
... Actually, these structures can co-exist during synthesis of one or other nanoparticle. The essence of the problem is fine regulation of growth of seed populations for producing metal nanoparticles with desired shape and morphology. The possibilities for its realization are provided by thermodynamic ...
(full text)
... continuity, as shown in Fig. 1(d) inset. Only the fraction of the electric field magnitude | Ecc | in NbN compared to air (i.e. f ) changes A || . On the other hand, decreasing p while keeping f constant decreases A⊥ . This effect is observed because there are more air-NbN interfaces per unit area ...
... continuity, as shown in Fig. 1(d) inset. Only the fraction of the electric field magnitude | Ecc | in NbN compared to air (i.e. f ) changes A || . On the other hand, decreasing p while keeping f constant decreases A⊥ . This effect is observed because there are more air-NbN interfaces per unit area ...
Laser microfabrication of alumina
... Alumina-silicon carbide nanocomposites have many potential applications, because of their excellent mechanical properties. However, they are very difficult to fabricate for MEMS devices due to the difficulty in machining these nanocomposites. Alumina-silicon carbide nanocomposites sintered by a pres ...
... Alumina-silicon carbide nanocomposites have many potential applications, because of their excellent mechanical properties. However, they are very difficult to fabricate for MEMS devices due to the difficulty in machining these nanocomposites. Alumina-silicon carbide nanocomposites sintered by a pres ...
Absorption and fluorescence spectra of poly
... the segment density for a single chain is very low; hence, * The volume expansion of HFIP over the temperature range is ...
... the segment density for a single chain is very low; hence, * The volume expansion of HFIP over the temperature range is ...
MSci Project Talk
... – allows study of wider range of species e.g. O+, N+ – compare with results from neutral target ...
... – allows study of wider range of species e.g. O+, N+ – compare with results from neutral target ...
Periodically Poled Lithium Niobate (PPLN) - Tutorial
... fact that the orientation of the Lithium Niobate crystal is periodically inverted (poled). The inverted portions of the crystal yield generated photons that are 180° out of phase with the generated photon that would have been created at that point in the crystal if it had not been poled. By choosing ...
... fact that the orientation of the Lithium Niobate crystal is periodically inverted (poled). The inverted portions of the crystal yield generated photons that are 180° out of phase with the generated photon that would have been created at that point in the crystal if it had not been poled. By choosing ...
Phys. Rev. Lett. 87, 160405
... We determine the lifetime of the condensate in the optical lattice by measuring the number of condensed atoms after ramping down the lattice potential. The following experimental sequence is used. The lattice is ramped up to its final strength within 40 ms and then the atoms are held for a variable ...
... We determine the lifetime of the condensate in the optical lattice by measuring the number of condensed atoms after ramping down the lattice potential. The following experimental sequence is used. The lattice is ramped up to its final strength within 40 ms and then the atoms are held for a variable ...
V807 -Photon-Counting Avalanche Photodiodes – A Primer
... The Task of Counting Photons Photons are quanta of light – they are discrete unit excitations of the electromagnetic field. Although photons are often described as “particles” of light, one should not imagine them as little round balls or geometric points. As with all denizens of the quantum world, ...
... The Task of Counting Photons Photons are quanta of light – they are discrete unit excitations of the electromagnetic field. Although photons are often described as “particles” of light, one should not imagine them as little round balls or geometric points. As with all denizens of the quantum world, ...
Chromatic acclimation and population dynamics of green sulfur
... Many species of photosynthetic microbes live in low-light environments, where other light harvesting organisms such as higher plants cannot survive. For example, some types of green sulfur bacteria have been found in Black Sea about 80 meters below the surface (1) and also in the deep-sea microbial ...
... Many species of photosynthetic microbes live in low-light environments, where other light harvesting organisms such as higher plants cannot survive. For example, some types of green sulfur bacteria have been found in Black Sea about 80 meters below the surface (1) and also in the deep-sea microbial ...
Storage and Control of Optical Photons Using Rydberg
... the resonant dipole-dipole interaction is an exchange process [25,26], this regime is dominated by excitations hopping, leading to loss or dephasing of the polariton read-out [27]. Consequently, the retrieved photon signal is suppressed and fits to an exponential decay. In this dephasing regime one ...
... the resonant dipole-dipole interaction is an exchange process [25,26], this regime is dominated by excitations hopping, leading to loss or dephasing of the polariton read-out [27]. Consequently, the retrieved photon signal is suppressed and fits to an exponential decay. In this dephasing regime one ...
Pulsed Solid State Laser with Passive Q
... versatile radiation sources in terms of output characteristics when compared to other laser systems. A large range of output parameters, such as average and peak power, pulse width, pulse repetition rate and wavelength, can be obtained with these systems. Today we find solid-state lasers in industry ...
... versatile radiation sources in terms of output characteristics when compared to other laser systems. A large range of output parameters, such as average and peak power, pulse width, pulse repetition rate and wavelength, can be obtained with these systems. Today we find solid-state lasers in industry ...
Production of coherent radiation by atoms and molecules
... that Nb > > N,. J. P. Gordon played a crucial role in making operable the first such system in 1954, after 2,5 years of experimental work9,10, and H. J. Zeiger was a valuable colleague in the first year of work and early designs. We called this general type of system the maser, an acronym for microw ...
... that Nb > > N,. J. P. Gordon played a crucial role in making operable the first such system in 1954, after 2,5 years of experimental work9,10, and H. J. Zeiger was a valuable colleague in the first year of work and early designs. We called this general type of system the maser, an acronym for microw ...
Biology 177: Principles of Modern Microscopy
... NSOM disadvantages • Practically zero working distance and small depth of field. • Extremely long scan times for high resolution images or large specimen areas. ...
... NSOM disadvantages • Practically zero working distance and small depth of field. • Extremely long scan times for high resolution images or large specimen areas. ...
The concept of modes in optics and photonics
... where B = dP/dA d is the radiance (power per unit area and solid angle), which is assumed to be nearly constant over the considered area A and solid angle . In conclusion, the spatial quality of light is given by the radiance. The intensity dP/dA (power per unit area) can be changed by appropriate o ...
... where B = dP/dA d is the radiance (power per unit area and solid angle), which is assumed to be nearly constant over the considered area A and solid angle . In conclusion, the spatial quality of light is given by the radiance. The intensity dP/dA (power per unit area) can be changed by appropriate o ...
Beyond Optical Molasses: 3D Raman Sideband Cooling of Atomic Cesium to High Phase-Space Density.
... Optical molasses has for some time been the mainstay of atomic physics experiments requiring ultracold temperatures [1]. Although other techniques, such as evaporative cooling [2], velocity-selective coherent population trapping [3], or free-space Raman cooling [4] are superior in some respects, non ...
... Optical molasses has for some time been the mainstay of atomic physics experiments requiring ultracold temperatures [1]. Although other techniques, such as evaporative cooling [2], velocity-selective coherent population trapping [3], or free-space Raman cooling [4] are superior in some respects, non ...
Optical response of plasmonic relief meta-surfaces
... out of plane height/depth, anisotropy, cross-sectional shape and periodic arrangement of features. As illustrated above, the (an)isotropy of unit cells determines the polarization dependence of optical properties. The cross-sectional shape of slots/bars has a strong impact on the spectral position a ...
... out of plane height/depth, anisotropy, cross-sectional shape and periodic arrangement of features. As illustrated above, the (an)isotropy of unit cells determines the polarization dependence of optical properties. The cross-sectional shape of slots/bars has a strong impact on the spectral position a ...
univ. physics
... We let s and s' be the object and image distances, respectively, and let y and y' be the object and image heights. Ray QA, parallel to the optic axis before refraction, passes through the second focal point F2 after refraction.The two angles labeled α are equal. Therefore the two right triangles PQO ...
... We let s and s' be the object and image distances, respectively, and let y and y' be the object and image heights. Ray QA, parallel to the optic axis before refraction, passes through the second focal point F2 after refraction.The two angles labeled α are equal. Therefore the two right triangles PQO ...
Electron beam lithography designed silver nano
... numerous optical [5, 6], amperometric [7, 8], impedometric [9], electro chemical [10], and magnetic [11, 12] biosensors described in the literature. These sensors are designed for tracking interactions at the classical physics limit, such as measuring mass, conductivity, pH, ionic mobility, and reso ...
... numerous optical [5, 6], amperometric [7, 8], impedometric [9], electro chemical [10], and magnetic [11, 12] biosensors described in the literature. These sensors are designed for tracking interactions at the classical physics limit, such as measuring mass, conductivity, pH, ionic mobility, and reso ...
Two-photon quantum walk in a multimode fiber
... path length difference between input photons; the classical bound on the magnitude contrast is 0.5. These results demonstrate that the quantum coherence between the photons is robust under propagation through the MMF, which acts as a high-dimensional multimode platform for quantum interference. Cont ...
... path length difference between input photons; the classical bound on the magnitude contrast is 0.5. These results demonstrate that the quantum coherence between the photons is robust under propagation through the MMF, which acts as a high-dimensional multimode platform for quantum interference. Cont ...
Phys. Rev. Lett. 102, 223901 (2009)
... wave (cw) laser is used as a probe of an atomic or molecular transition, which is then calibrated against a frequency comb (see, e.g., [5] for an experiment on atoms, [6] for references to measurements on tightly confined ions, and [7,8] for measurements on ions in the weak binding limit). However, ...
... wave (cw) laser is used as a probe of an atomic or molecular transition, which is then calibrated against a frequency comb (see, e.g., [5] for an experiment on atoms, [6] for references to measurements on tightly confined ions, and [7,8] for measurements on ions in the weak binding limit). However, ...