Guided-Wave Optical Biosensors
... sequences in biological samples. Finally, entire micro-organisms (as bacteria and fungi) can be used as bio receptors, for example, to test the toxicity of some substances. 3. Optical Transduction Mechanisms 3.1 Fluorescence Fluorescence phenomena are related to an energetic transition from an excit ...
... sequences in biological samples. Finally, entire micro-organisms (as bacteria and fungi) can be used as bio receptors, for example, to test the toxicity of some substances. 3. Optical Transduction Mechanisms 3.1 Fluorescence Fluorescence phenomena are related to an energetic transition from an excit ...
Fluorescence Microscopy
... phenomena, and where better its application than when trying to comprehend cell physiology using florescence microscopy? Microscopy has played an important role in determining the activity of cells, from the very early appreciation of living animalcules by Van Leeuwenhoek (Ford 1989) with a simple mi ...
... phenomena, and where better its application than when trying to comprehend cell physiology using florescence microscopy? Microscopy has played an important role in determining the activity of cells, from the very early appreciation of living animalcules by Van Leeuwenhoek (Ford 1989) with a simple mi ...
Slide 1
... • No need of resolution enhancement techniques. • Relax the requirement for NA. • For EUV lithography, =13.5nm where efficient “lens” (reflected mirror) exists. ...
... • No need of resolution enhancement techniques. • Relax the requirement for NA. • For EUV lithography, =13.5nm where efficient “lens” (reflected mirror) exists. ...
Visible light optical coherence correlation spectroscopy
... spL2048-140km with 2048 pixels, Basler). As illustrated in Fig. 1, the illumination and detection beams do not overlap in the aperture plane of the objective: any specular reflected light from the glass slide is blocked by the diaphragm Fdet . The interferometer was conceived with a minimum number o ...
... spL2048-140km with 2048 pixels, Basler). As illustrated in Fig. 1, the illumination and detection beams do not overlap in the aperture plane of the objective: any specular reflected light from the glass slide is blocked by the diaphragm Fdet . The interferometer was conceived with a minimum number o ...
Effect of barrier height on linear and nonlinear
... Quantum dots behave like artificial atoms and their electronic and optical properties are significantly different as compared to bulk [1]. In the interaction of radiation with matter at low radiation intensity the induced polarization depends linearly on the electric field and linear response is obt ...
... Quantum dots behave like artificial atoms and their electronic and optical properties are significantly different as compared to bulk [1]. In the interaction of radiation with matter at low radiation intensity the induced polarization depends linearly on the electric field and linear response is obt ...
Laser-Assisted Dynamics on Metallic Surfaces using
... and high-harmonic generation has opened up a new area of surface science, where these two light sources are the standard tools for the study of ultrafast surface dynamics. Another critical discovery that has made it possible to study high-energy and femtosecond time-scale atomic dynamics is the lase ...
... and high-harmonic generation has opened up a new area of surface science, where these two light sources are the standard tools for the study of ultrafast surface dynamics. Another critical discovery that has made it possible to study high-energy and femtosecond time-scale atomic dynamics is the lase ...
Metal surface structuring with spatiotemporally focused femtosecond
... different metal materials even under the same ablation conditions. The physics behind this observation is rather unclear and provides a nice topic of research to be systematically investigated in the future. Nevertheless, generally speaking, the physics has to be related to the different material pr ...
... different metal materials even under the same ablation conditions. The physics behind this observation is rather unclear and provides a nice topic of research to be systematically investigated in the future. Nevertheless, generally speaking, the physics has to be related to the different material pr ...
Second-harmonic generation of focused ultrashort
... propagation direction of each beam. k and η are the wave vector and impedance inside the material, respectively, ω0 is the pump central angular frequency, and v g is the group velocity. In the hard x-ray regime, high above resonances, the linear interaction is described by Thomson scattering giving ...
... propagation direction of each beam. k and η are the wave vector and impedance inside the material, respectively, ω0 is the pump central angular frequency, and v g is the group velocity. In the hard x-ray regime, high above resonances, the linear interaction is described by Thomson scattering giving ...
Exciton states and optical transitions in colloidal CdS quantum dots
... Some of the most effective methods of investigation of carrier energy spectra in QD’s are optical ones. They include absorption of light, photoluminescence, photoluminescence excitation, Raman scattering, etc.14 –19 At the same time, the present-day technology does not allow the synthesis of arrays ...
... Some of the most effective methods of investigation of carrier energy spectra in QD’s are optical ones. They include absorption of light, photoluminescence, photoluminescence excitation, Raman scattering, etc.14 –19 At the same time, the present-day technology does not allow the synthesis of arrays ...
population inversion - Széchenyi István Egyetem
... than the bulk lasers, but they also have higher gain, better transparency. Quantum wells based on GaAs perform well, low loss, high gain Quantum wells based on InP have higher loss ...
... than the bulk lasers, but they also have higher gain, better transparency. Quantum wells based on GaAs perform well, low loss, high gain Quantum wells based on InP have higher loss ...
Defect-based Photonic Crystal Cavity for Silicon Laser PHYC/ECE 568
... processes in materials can reach speeds that are not achievable by electronic switches and Raman lasers on silicon provide a platform for a CMOS compatible photonic integrated circuit. Optical microcavities help in design and implementation of more compact circuits and will decrease the power consum ...
... processes in materials can reach speeds that are not achievable by electronic switches and Raman lasers on silicon provide a platform for a CMOS compatible photonic integrated circuit. Optical microcavities help in design and implementation of more compact circuits and will decrease the power consum ...
Bismuth-doped optical fibers: a challenging active medium
... Bi22/Bi222, point defects, Bi0 and others have been examined, but none has been directly confirmed to be the defining factor. These hypotheses have been analyzed in detail in Ref. 14. At the same time, the results of extensive research on the luminescence spectra and lasing performance of crystals d ...
... Bi22/Bi222, point defects, Bi0 and others have been examined, but none has been directly confirmed to be the defining factor. These hypotheses have been analyzed in detail in Ref. 14. At the same time, the results of extensive research on the luminescence spectra and lasing performance of crystals d ...
View PDF - Adelphi University
... as measured by the value of ␥, decreases in this case with decreasing dot size. However, as the linear and saturable absorption coefficients are also decreasing, the relative effect of the three-photon absorption actually increases with decreasing dot size. For the correctly chosen combination of do ...
... as measured by the value of ␥, decreases in this case with decreasing dot size. However, as the linear and saturable absorption coefficients are also decreasing, the relative effect of the three-photon absorption actually increases with decreasing dot size. For the correctly chosen combination of do ...
Two-Color Two-Photon Excitation Using Femtosecond Laser Pulses
... fluorescence intensity is also investigated. As shown in Figure 7, a change from two parallel polarized photons (r ls b ls) to two perpendicular photons (r ls b lp) results in a reduction of fluorescence intensity to approximately 40% of the parallel case. For excitation with two circular polarized ...
... fluorescence intensity is also investigated. As shown in Figure 7, a change from two parallel polarized photons (r ls b ls) to two perpendicular photons (r ls b lp) results in a reduction of fluorescence intensity to approximately 40% of the parallel case. For excitation with two circular polarized ...
Atomic Spectroscopy
... transitions from the ground state to a higher energy level. Atoms in the excited state are generally unstable and will rapidly revert to the ground state, losing the acquired energy in the process. Emission lines are produced when these transitions from higher energy states to lower energy states oc ...
... transitions from the ground state to a higher energy level. Atoms in the excited state are generally unstable and will rapidly revert to the ground state, losing the acquired energy in the process. Emission lines are produced when these transitions from higher energy states to lower energy states oc ...
Application of ion scattering techniques to characterize polymer
... characteristic of their depths and kinematic factors. In addition, a high flux of 4 He ions are forward scattered by heavy atoms in the substrate (i.e. silicon) with an energy that again depends on the depth of the scattering event. This high flux of 4 He would overwhelm the relatively low flux of 1 ...
... characteristic of their depths and kinematic factors. In addition, a high flux of 4 He ions are forward scattered by heavy atoms in the substrate (i.e. silicon) with an energy that again depends on the depth of the scattering event. This high flux of 4 He would overwhelm the relatively low flux of 1 ...
Polariton traps in semiconductor microcavities
... in the OPO is still governed by exciton–polariton emission. Another eMect of the strong parametric interaction is to shift and distort the dispersion relation on which the polaritons sit. The parametric interaction possesses both real and imaginary components of roughly equal magnitude. While the i ...
... in the OPO is still governed by exciton–polariton emission. Another eMect of the strong parametric interaction is to shift and distort the dispersion relation on which the polaritons sit. The parametric interaction possesses both real and imaginary components of roughly equal magnitude. While the i ...
Untitled
... propagation medium, particles, or in the interface between two media.” “Scattering is a general physical process whereby some forms of radiation, such as light or moving particles, for example, are forced to deviate from a straight trajectory by one or more localized non-uniformities in the medium t ...
... propagation medium, particles, or in the interface between two media.” “Scattering is a general physical process whereby some forms of radiation, such as light or moving particles, for example, are forced to deviate from a straight trajectory by one or more localized non-uniformities in the medium t ...
Part II
... This is 100% equivalent to The Bragg Law! The result that k = G can also be expressed to give the relations that are called The Laue Relations or the Laue Equations. These are obtained by taking the dot product of both Δk & G with a1, a2 & a3. The Laue Equations are: k ai 2vi , i 1,2,3 ...
... This is 100% equivalent to The Bragg Law! The result that k = G can also be expressed to give the relations that are called The Laue Relations or the Laue Equations. These are obtained by taking the dot product of both Δk & G with a1, a2 & a3. The Laue Equations are: k ai 2vi , i 1,2,3 ...
Optical losses
... connector losses is by splicing the two ends of the fibers permanently, either by gluing of by fusing at high temperatures. Losses in gaps can be viewed as a type of Fresnel loss because existing air space introduces two media interfaces and their associated Fresnel reflection losses. In this case, ...
... connector losses is by splicing the two ends of the fibers permanently, either by gluing of by fusing at high temperatures. Losses in gaps can be viewed as a type of Fresnel loss because existing air space introduces two media interfaces and their associated Fresnel reflection losses. In this case, ...
Vector mixed-gap surface solitons
... formation of light patterns that often do not even exist in scalar settings. Vector solitons forming due to the coupling of two waves have been encountered in a number of geometries, including uniform media with both coherent [1-4] and incoherent [5-8] interactions. On the other hand, several previo ...
... formation of light patterns that often do not even exist in scalar settings. Vector solitons forming due to the coupling of two waves have been encountered in a number of geometries, including uniform media with both coherent [1-4] and incoherent [5-8] interactions. On the other hand, several previo ...
from ucf.edu - CREOL - University of Central Florida
... on the previous considerations, it can be directly shown that a necessary (but not sufficient) condition for a Hamiltonian to be PT symmetric is V (x) = V ∗ (−x). In other words, the real part of the complex potential involved must be a symmetric function of position, while the imaginary component s ...
... on the previous considerations, it can be directly shown that a necessary (but not sufficient) condition for a Hamiltonian to be PT symmetric is V (x) = V ∗ (−x). In other words, the real part of the complex potential involved must be a symmetric function of position, while the imaginary component s ...
High resolution, high contrast, high focal depth nonlinear beams
... Conical waves are unique and peculiar wave packets, in which the energy flow is not directed along the beam axis, as in conventional waves. In contrast, here the energy arrives laterally, i.e., from a cone-shaped surface, leading to the appearance of a very intense and localized interference peak at ...
... Conical waves are unique and peculiar wave packets, in which the energy flow is not directed along the beam axis, as in conventional waves. In contrast, here the energy arrives laterally, i.e., from a cone-shaped surface, leading to the appearance of a very intense and localized interference peak at ...
Enhancing the emission directionality of organic light-emitting diodes by using
... TE and TM modes. Interestingly, we did not observe any noticeable emission due to the out-coupling of the SPP mode through the substrate, but a peak corresponding to the SPP mode was observed in top emission through the metal film. In summary, we have developed solution-processable OLEDs with direct ...
... TE and TM modes. Interestingly, we did not observe any noticeable emission due to the out-coupling of the SPP mode through the substrate, but a peak corresponding to the SPP mode was observed in top emission through the metal film. In summary, we have developed solution-processable OLEDs with direct ...
Systematics of c-Axis Phonons in Tl and Bi Based Superconductors.
... The phonon spectra of high-temperature superconductors were widely studied due to the possible important role in the mechanism of superconductivity. Besides that, the phonons being on the same energy scale as the superconducting gap strongly affected many superconductivity-related quantities, such a ...
... The phonon spectra of high-temperature superconductors were widely studied due to the possible important role in the mechanism of superconductivity. Besides that, the phonons being on the same energy scale as the superconducting gap strongly affected many superconductivity-related quantities, such a ...