The effect of skin phototype on laser propagation through skin
... The use of lasers for diagnosis and treatment in medical and cosmetic applications is increasing worldwide. Not all of these modalities are superficial and many require laser light to penetrate some distance into the tissue or skin to reach the treatment site. Human skin is highly scattering for lig ...
... The use of lasers for diagnosis and treatment in medical and cosmetic applications is increasing worldwide. Not all of these modalities are superficial and many require laser light to penetrate some distance into the tissue or skin to reach the treatment site. Human skin is highly scattering for lig ...
Light Scattering in Holographic Polymer Dispersed Liquid Crystals
... Figure 9.The Bragg grating structure is a periodic structure of alternating layers of differing refractive index. The width of the repeating unit is defined as the grating pitch, Λ. When light is incident on the Bragg grating, the Bragg wavelength is strongly reflected while the other wavelengths ar ...
... Figure 9.The Bragg grating structure is a periodic structure of alternating layers of differing refractive index. The width of the repeating unit is defined as the grating pitch, Λ. When light is incident on the Bragg grating, the Bragg wavelength is strongly reflected while the other wavelengths ar ...
Analysis And Design Of Wide-angle Foveated Optical
... optical systems (FOS) prototypes have been built. However, most research has been focused so far on the experimental demonstration of the basic concept using off-the-shelf components, without much concern for the practicality or the optical performance of the systems. Published results quantify only ...
... optical systems (FOS) prototypes have been built. However, most research has been focused so far on the experimental demonstration of the basic concept using off-the-shelf components, without much concern for the practicality or the optical performance of the systems. Published results quantify only ...
Coherent Control of Atoms and Molecules
... the one I experienced. For that, my advisors Margaret Murnane and Henry Kapteyn must take a large share of the credit. They have been friends and mentors to me, allowing me to explore just about anything that interested me. In fact, we even did a few of Henry's famous "one-day" experiments in more-o ...
... the one I experienced. For that, my advisors Margaret Murnane and Henry Kapteyn must take a large share of the credit. They have been friends and mentors to me, allowing me to explore just about anything that interested me. In fact, we even did a few of Henry's famous "one-day" experiments in more-o ...
development and verification of the non
... 4 Channel Assembly . . . . . . . . . . . Aberrations . . . . . . . . . . . . . . . . Optical beam parameters . . . . . . . . ...
... 4 Channel Assembly . . . . . . . . . . . Aberrations . . . . . . . . . . . . . . . . Optical beam parameters . . . . . . . . ...
High fO2 During Sillimanite Zone Metamorphism of Part of the
... typically rimmed or partially replaced by RHOMOX. It is unclear if these rim or replacement textures developed during prograde metamorphism or if they are retrograde. Additional Rt parageneses that are almost certainly retrograde are described below. Some samples contain small amounts (<>1 vol. %) o ...
... typically rimmed or partially replaced by RHOMOX. It is unclear if these rim or replacement textures developed during prograde metamorphism or if they are retrograde. Additional Rt parageneses that are almost certainly retrograde are described below. Some samples contain small amounts (<>1 vol. %) o ...
Design, near-field characterization, and modeling of 45° surface
... surface plasmon polariton traveling on a gold thin film at 90°. Mirrors composed of two kind of defects have been considered: Gratings of gold protuberances 共that we will denote ridges or lines in the following兲 and gratings of indentations 共named slits or grooves兲. The response of the mirrors has b ...
... surface plasmon polariton traveling on a gold thin film at 90°. Mirrors composed of two kind of defects have been considered: Gratings of gold protuberances 共that we will denote ridges or lines in the following兲 and gratings of indentations 共named slits or grooves兲. The response of the mirrors has b ...
The Graduate School Eberly College of Science
... achieve unidirectional, single-frequency operation of the laser, we developed a novel scheme of “self-injection locking” where a small portion of the output beam is coupled back into the cavity to break the symmetry. This technique is useful for high-power, single-frequency operation of a ring laser ...
... achieve unidirectional, single-frequency operation of the laser, we developed a novel scheme of “self-injection locking” where a small portion of the output beam is coupled back into the cavity to break the symmetry. This technique is useful for high-power, single-frequency operation of a ring laser ...
A pulsed dye laser for photo-ionization of magnesium atoms
... and the line width of the exciting laser are both smaller than than the isotope shift. Magnesium atoms can be ionized through a two-step process using a dipole allowed transition at 285 nm as resonant excitation step. Unfortunately, light at 285 nm is not easily produced by simple solid state laser ...
... and the line width of the exciting laser are both smaller than than the isotope shift. Magnesium atoms can be ionized through a two-step process using a dipole allowed transition at 285 nm as resonant excitation step. Unfortunately, light at 285 nm is not easily produced by simple solid state laser ...
Ans: Optical Fiber Communication System
... or plastic, slightly thicker than a human hair. It can function as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are ...
... or plastic, slightly thicker than a human hair. It can function as a waveguide, or “light pipe”, to transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics. Optical fibers are ...
Optical fluctuations on the transmission and reflection of mesoscopic
... In chapter 2 an introduction into multiple scattering theory is given. First a particle diffusion model is presented. Then the wave equation with a random potential is introduced along with useful concepts such as the optical theorem. The difference between multiple scattering on the amplitude level a ...
... In chapter 2 an introduction into multiple scattering theory is given. First a particle diffusion model is presented. Then the wave equation with a random potential is introduced along with useful concepts such as the optical theorem. The difference between multiple scattering on the amplitude level a ...
reflectance measurement and modelling of high reflectivity
... This thesis is about the reflectance measurement of high reflectivity DBR stacks by using Fourier Transform Infrared (FT-IR) spectroscopy. First, the basic theory of optical multilayer is reviewed and then the principle operation of FT-IR spectroscopy is studied. Followed by method used to simulate ...
... This thesis is about the reflectance measurement of high reflectivity DBR stacks by using Fourier Transform Infrared (FT-IR) spectroscopy. First, the basic theory of optical multilayer is reviewed and then the principle operation of FT-IR spectroscopy is studied. Followed by method used to simulate ...
High-Resolution Retinal Imaging using Adaptive Optics in a
... diseases: the study of the diseases themselves in terms of their causes and their progression with time; the development of a treatment for each disease; the diagnosis of the diseases at a stage when it is early enough to cure; and the treatment itself, whether of a surgical nature or otherwise. ...
... diseases: the study of the diseases themselves in terms of their causes and their progression with time; the development of a treatment for each disease; the diagnosis of the diseases at a stage when it is early enough to cure; and the treatment itself, whether of a surgical nature or otherwise. ...
Engineering nonlinearities in nanoscale optical systems
... in dielectric structures with nanometer-scale cross sections. In this case, the usual guided-wave nonlinearities are generated in a structure, which also controls to all orders the optical dispersion of the guiding structure. The nonlinearities are sufficiently large that the waveguides act in the s ...
... in dielectric structures with nanometer-scale cross sections. In this case, the usual guided-wave nonlinearities are generated in a structure, which also controls to all orders the optical dispersion of the guiding structure. The nonlinearities are sufficiently large that the waveguides act in the s ...
laser-based fibre-optic sensor for measurement of surface properties
... Literature Survey - Fibre-Optic Technology ...
... Literature Survey - Fibre-Optic Technology ...
Optical Spectroscopy of Spin Ladders
... Two-leg ladders with S = 1/2 exhibit a spin-liquid ground state with triplets as the elementary excitations. The triplet dispersion shows a gap [3], which is contrary to both 1D Heisenberg chains and odd-leg ladders that have gapless excitation spectra. The socalled telephone-number compounds (Sr,La ...
... Two-leg ladders with S = 1/2 exhibit a spin-liquid ground state with triplets as the elementary excitations. The triplet dispersion shows a gap [3], which is contrary to both 1D Heisenberg chains and odd-leg ladders that have gapless excitation spectra. The socalled telephone-number compounds (Sr,La ...
24_(582-588)(완료)E14120 ed-Jin-Kyu Yang.hwp
... IQE is usually limited by the quality of an active medium such as an InGaN quantum well (QW), and LEE is limited by total internal reflection (TIR) in high index contrast between the semiconductor and surrounding material. Recently, the high IQE of InGaN/GaN blue LEDs was achieved with the help of r ...
... IQE is usually limited by the quality of an active medium such as an InGaN quantum well (QW), and LEE is limited by total internal reflection (TIR) in high index contrast between the semiconductor and surrounding material. Recently, the high IQE of InGaN/GaN blue LEDs was achieved with the help of r ...
Aalborg Universitet Photonic crystal distributed feedback fiber lasers with Bragg gratings
... that this method is numerically efficient compared to previous plane wave expansion methods [21]. More details regarding the method may be found in [12]. The single-mode properties of the two chosen fiber designs are illustrated in Fig. 2. The figure shows for both fiber designs for cladding modes, ...
... that this method is numerically efficient compared to previous plane wave expansion methods [21]. More details regarding the method may be found in [12]. The single-mode properties of the two chosen fiber designs are illustrated in Fig. 2. The figure shows for both fiber designs for cladding modes, ...
Multimode Pumping of Optical Parametric Oscillators
... overall beam diameter increases as the mode order is increased. buildup times are plotted in Fig. 2, for various numbers of The mode-coupling parameter gs,n is used to determine the pump modes, as a function of pump beam spot size. Our pump threshold of the OPO, by dividing the threshold for perfect ...
... overall beam diameter increases as the mode order is increased. buildup times are plotted in Fig. 2, for various numbers of The mode-coupling parameter gs,n is used to determine the pump modes, as a function of pump beam spot size. Our pump threshold of the OPO, by dividing the threshold for perfect ...
Conformation and Intermolecular Interactions of SA2 Peptides Self
... solvents (tetrahydrofuran (THF), acetonitrile, or ethanol). Dynamic light scattering showed that the peptide vesicles persisted in all of the above used solvents, with preservation of light scattering intensity, small mean particle sizes, and little particle polydispersity (Table 2). These particle ...
... solvents (tetrahydrofuran (THF), acetonitrile, or ethanol). Dynamic light scattering showed that the peptide vesicles persisted in all of the above used solvents, with preservation of light scattering intensity, small mean particle sizes, and little particle polydispersity (Table 2). These particle ...
Full Article PDF - Advanced Materials Letters
... nanowires up to several nanometers long at 220oC. These nanowires are comprised of uniform geometry and dislocationfree volume and up to several nanometers long, i.e. 500–1500 nm. It is worth mentioning that the fascinating needle shaped morphology originating from the common center is an exemplar ...
... nanowires up to several nanometers long at 220oC. These nanowires are comprised of uniform geometry and dislocationfree volume and up to several nanometers long, i.e. 500–1500 nm. It is worth mentioning that the fascinating needle shaped morphology originating from the common center is an exemplar ...
Synthesis, crystal structure and vibrational spectra
... phosphates with general formula MIMIII(PO3)4 (where MI is an alkali cation, Ag [5] and [6]) and MIII is a rareearth trivalent cation [7], [8], [9] and [10], Bi [11] and [12] or Y [13] and [14] were published mainly for their optical properties. In particular, LiNd(PO3)4 [15] and [16] and NaNd(PO3)4 ...
... phosphates with general formula MIMIII(PO3)4 (where MI is an alkali cation, Ag [5] and [6]) and MIII is a rareearth trivalent cation [7], [8], [9] and [10], Bi [11] and [12] or Y [13] and [14] were published mainly for their optical properties. In particular, LiNd(PO3)4 [15] and [16] and NaNd(PO3)4 ...
Gravity Gradient Survey with a Mobile Atom
... and for all the insightful and fruitful discussions. In particular, Louis unreservedly helped me on various parts of this thesis work - for example, appendix B is nearly entirely derived from his notes. Also, big thanks to Chetan Mahadeswaraswamy for his work on the truck, without which none of the ...
... and for all the insightful and fruitful discussions. In particular, Louis unreservedly helped me on various parts of this thesis work - for example, appendix B is nearly entirely derived from his notes. Also, big thanks to Chetan Mahadeswaraswamy for his work on the truck, without which none of the ...
Flotation behaviour and surface characteristics of the artificial
... The pH value of ore pulp and the collector dosage can clearly influence the floatability of minerals. Therefore, these two factors are discussed in this section. Figure 3 shows the effect of pH on the flotation recovery of anosovite at a sodium oleate concentration of 2·10−6 mol/dm3. As shown in Fig ...
... The pH value of ore pulp and the collector dosage can clearly influence the floatability of minerals. Therefore, these two factors are discussed in this section. Figure 3 shows the effect of pH on the flotation recovery of anosovite at a sodium oleate concentration of 2·10−6 mol/dm3. As shown in Fig ...
Optics and Quantum Electronics—J. G. Fujimoto, H. A. Haus, E. P. Ippen, F. X. Kärtner
... emission over one octave of bandwidth. The development of compact and robust octave spanning lasers is of prime importance for optical frequency metrology and investigation of phase sensitive nonlinear optical processes. To achieve this broadband emission directly from the laser precise dispersion c ...
... emission over one octave of bandwidth. The development of compact and robust octave spanning lasers is of prime importance for optical frequency metrology and investigation of phase sensitive nonlinear optical processes. To achieve this broadband emission directly from the laser precise dispersion c ...