Fermat`s Principle and the Geometric Mechanics of
... After briefly discussing the geometric ideas underlying the principles of Fermat and Huygens and using them to derive and interpret the eikonal equation for ray optics, these notes show that Fermat’s principle naturally introduces Hamilton’s principle for the Euler–Lagrange equations, as well as the ...
... After briefly discussing the geometric ideas underlying the principles of Fermat and Huygens and using them to derive and interpret the eikonal equation for ray optics, these notes show that Fermat’s principle naturally introduces Hamilton’s principle for the Euler–Lagrange equations, as well as the ...
Biology 177: Principles of Modern Microscopy
... moving along filopodia • In fact, most single molecule imaging today done with TIRFM ...
... moving along filopodia • In fact, most single molecule imaging today done with TIRFM ...
Chapter 3: prisms
... parallel. In this course, we will only consider prisms made of homogeneous and isotropic media. There are other types of prisms made of birefringent material (Wollaston, Rochon) that modify the polarization state of light ; those will be studied in the wave optics course. We will see two types of pr ...
... parallel. In this course, we will only consider prisms made of homogeneous and isotropic media. There are other types of prisms made of birefringent material (Wollaston, Rochon) that modify the polarization state of light ; those will be studied in the wave optics course. We will see two types of pr ...
Thickness dependence of amplified spontaneous emission in low-absorbing organic waveguides
... These results are comparable to those previously reported for a 1 μm thick PS film doped with 0.75 wt.% of a similar derivative, N, N’-di(10-nonadecyl)perylene3, 4:9, 10-tetracarboxylic diimide, denoted as PDI-N [11]. The chemical structure of PDI-C6 differs from that of PDI-N only in the length of ...
... These results are comparable to those previously reported for a 1 μm thick PS film doped with 0.75 wt.% of a similar derivative, N, N’-di(10-nonadecyl)perylene3, 4:9, 10-tetracarboxylic diimide, denoted as PDI-N [11]. The chemical structure of PDI-C6 differs from that of PDI-N only in the length of ...
File
... As the current is further increased, at threshold value of the current, the amplification will overcome the losses in the cavity and the laser will begin to emit coherent radiation. PH 0101 UNIT 3 LECTURE 5 ...
... As the current is further increased, at threshold value of the current, the amplification will overcome the losses in the cavity and the laser will begin to emit coherent radiation. PH 0101 UNIT 3 LECTURE 5 ...
Optical Studies and Micro-Structure Modeling of the Circular-Polarizing Scarab Beetles Cetonia aurata
... Liocola marmorata are of the family Scarabaediae and subfamily Cetoniianae (Guldbaggar). They were all collected at locations in Sweden and are the only species of Cetoniinae scarabs in Sweden. This work reports on their optical properties represented by Mueller-matrix elements, degree of polarizati ...
... Liocola marmorata are of the family Scarabaediae and subfamily Cetoniianae (Guldbaggar). They were all collected at locations in Sweden and are the only species of Cetoniinae scarabs in Sweden. This work reports on their optical properties represented by Mueller-matrix elements, degree of polarizati ...
Atmospheric Optics 1
... refraction. When the sun is at the horizon, light from the lower edge is significantly stronger refracted than from the upper edge – and appears to be higher – resulting in a flattened image of the sun. ...
... refraction. When the sun is at the horizon, light from the lower edge is significantly stronger refracted than from the upper edge – and appears to be higher – resulting in a flattened image of the sun. ...
Final Thesis_Compatible Mode
... An optical fiber (or fibre) is a glass or plastic fiber that carries light along its length. Fiber optics is the overlap of applied science and engineering concerned with the design and application of optical fibers. Optical fibers are widely used in fiber-optic communications, which permits transmi ...
... An optical fiber (or fibre) is a glass or plastic fiber that carries light along its length. Fiber optics is the overlap of applied science and engineering concerned with the design and application of optical fibers. Optical fibers are widely used in fiber-optic communications, which permits transmi ...
Solid-state laser system for laser cooling of Sodium - ENS-phys
... Therefore, by adjusting the temperature one can reach the quasi-phase matching condition ∆k = 2π/Λ which maximizes the conversion efficiency. In practice, the period Λ is chosen so that this condition is fulfilled near room temperature. ...
... Therefore, by adjusting the temperature one can reach the quasi-phase matching condition ∆k = 2π/Λ which maximizes the conversion efficiency. In practice, the period Λ is chosen so that this condition is fulfilled near room temperature. ...
Intensity Interferometry toward high resolution
... 1954, R. Hanbury Brown together with R. Q. Twiss elaborated a novel method of radio interferometry, intensity interferometry [8]. While previously, interferometry dealt with the optical superposition of the light, thus the amplitude of light, intensity interferometry looks at the superposition of th ...
... 1954, R. Hanbury Brown together with R. Q. Twiss elaborated a novel method of radio interferometry, intensity interferometry [8]. While previously, interferometry dealt with the optical superposition of the light, thus the amplitude of light, intensity interferometry looks at the superposition of th ...
Picosecond resolution soft x-ray laser plasma
... interferometer cannot, in principle, be performed with an auxiliary optical laser. To overcome this difficulty the diffraction gratings were designed to have two different, vertically separated, ruled sections on the same substrate. The section associated with alignment had a line spacing chosen to ...
... interferometer cannot, in principle, be performed with an auxiliary optical laser. To overcome this difficulty the diffraction gratings were designed to have two different, vertically separated, ruled sections on the same substrate. The section associated with alignment had a line spacing chosen to ...
PDF
... my thanks to all my students, post-doctoral associates, and collaborators, past and present, for their hard work and contributions to the accomplishments that have made this recognition possible. I am also very grateful for the support of my colleagues, Horace Yuen in particular, in the Electrical a ...
... my thanks to all my students, post-doctoral associates, and collaborators, past and present, for their hard work and contributions to the accomplishments that have made this recognition possible. I am also very grateful for the support of my colleagues, Horace Yuen in particular, in the Electrical a ...
Applications of Geometric Phase in Optics
... largely ignored before [1]. It involved the phase that a physical system acquires when it travels a path in either parameter space or state space. Consider for instance a beam of light traveling on a certain path in real space. A calculation of the phase of the wave after the path cannot be based on ...
... largely ignored before [1]. It involved the phase that a physical system acquires when it travels a path in either parameter space or state space. Consider for instance a beam of light traveling on a certain path in real space. A calculation of the phase of the wave after the path cannot be based on ...
Evaluation of the scintillation loss for optical
... channel model. Power fluctuations can then be transposed into a power penalty for link budget calculations. This paper provides an overview of the different possible derivations of scintillation losses. First, a methodology section enumerates the general assumptions that are made. After defining a sho ...
... channel model. Power fluctuations can then be transposed into a power penalty for link budget calculations. This paper provides an overview of the different possible derivations of scintillation losses. First, a methodology section enumerates the general assumptions that are made. After defining a sho ...
Phase zone plates for x rays and the extreme uv - X
... In Table II, we present data on some materials that seem suitable in the wavelength range from 1 to 800 A. Table II is by no means complete. It is meant to illustrate, however, that materials exist with <710.2, which will provide the necessary phase shift with a thickness in the 0.07-3.2-jim range, ...
... In Table II, we present data on some materials that seem suitable in the wavelength range from 1 to 800 A. Table II is by no means complete. It is meant to illustrate, however, that materials exist with <710.2, which will provide the necessary phase shift with a thickness in the 0.07-3.2-jim range, ...
Get PDF - OSA Publishing
... still not too strong to destroy the resonance structure of the medium. In the terminology of high intensity laser-matter interactions and photoionization, we require operation in the regime of “multi-photon ionization” rather than “tunneling ionization” [1,2]. This choice provides appropriate condit ...
... still not too strong to destroy the resonance structure of the medium. In the terminology of high intensity laser-matter interactions and photoionization, we require operation in the regime of “multi-photon ionization” rather than “tunneling ionization” [1,2]. This choice provides appropriate condit ...
High optical absorption in graphene
... absorption [8-11]. Related contrast effects are exploited when making graphene “visible” by placing it on top of silicon wafers or using holes in a metallic screen [12-14]. Here we investigate another line of approach, not invoking surface plasmons or other collective excitations, to realize optimal ...
... absorption [8-11]. Related contrast effects are exploited when making graphene “visible” by placing it on top of silicon wafers or using holes in a metallic screen [12-14]. Here we investigate another line of approach, not invoking surface plasmons or other collective excitations, to realize optimal ...
Laser Locking with Doppler-free Saturated Absorption Spectroscopy
... (b) Fine and hyperfine splitting for rubidium between the 52P1/2 and 52P1/2 states (795 nm D1 line). The lower part gives the relative position of the hyperfine lines in MHz [4]. With these multi-level atoms, additional variables such as optical pumping and crossover resonances must be considered. C ...
... (b) Fine and hyperfine splitting for rubidium between the 52P1/2 and 52P1/2 states (795 nm D1 line). The lower part gives the relative position of the hyperfine lines in MHz [4]. With these multi-level atoms, additional variables such as optical pumping and crossover resonances must be considered. C ...
Self-Organization, Broken Symmetry, and Lasing in an Atomic Vapor:
... diffraction is also observed but its peak is a factor of 2 smaller than in the s2 case. In this case attenuation of the backpropagating intracavity oscillation is also less (about 30% at peak diffraction). To determine whether this gain reduction was due to perturbation of the grating or optical pum ...
... diffraction is also observed but its peak is a factor of 2 smaller than in the s2 case. In this case attenuation of the backpropagating intracavity oscillation is also less (about 30% at peak diffraction). To determine whether this gain reduction was due to perturbation of the grating or optical pum ...
Lecture Notes
... The physics of diffraction plays an important role in many scientific and engineering fields. In this chapter we explain diffraction using the wave nature of light and discuss several applications of diffraction in science and technology. ...
... The physics of diffraction plays an important role in many scientific and engineering fields. In this chapter we explain diffraction using the wave nature of light and discuss several applications of diffraction in science and technology. ...
Calculation of vectorial three-dimensional transfer
... At large focusing angles the vectorial nature of the electromagnetic field becomes increasingly significant and the accuracy of the scalar description is compromised.6–8 In addition, many applications involve imaging of anisotropic samples such as a distribution of oriented dipoles in single-molecul ...
... At large focusing angles the vectorial nature of the electromagnetic field becomes increasingly significant and the accuracy of the scalar description is compromised.6–8 In addition, many applications involve imaging of anisotropic samples such as a distribution of oriented dipoles in single-molecul ...
Motion of hot spots in smoothed beams
... intensity, the instantaneous contrast also being reduced, by a factor 1/A2. A third solution would be to reduce the interaction time between hot spots (high laser intensities) and plasma. Smoothing techniques are relevant here in that they create inside the focal spot many hot spots that disappear r ...
... intensity, the instantaneous contrast also being reduced, by a factor 1/A2. A third solution would be to reduce the interaction time between hot spots (high laser intensities) and plasma. Smoothing techniques are relevant here in that they create inside the focal spot many hot spots that disappear r ...
Development of a Tm3+-doped Fluoride Glass - DORAS
... The development of a fluoride fibre laser for hydrocarbon gas sensing is discussed. The use of a fibre laser as a source for optical sensing has many advantages including small size and ease of adaptability into industrial systems. The fibre laser constructed in this work has an operating wavelength ...
... The development of a fluoride fibre laser for hydrocarbon gas sensing is discussed. The use of a fibre laser as a source for optical sensing has many advantages including small size and ease of adaptability into industrial systems. The fibre laser constructed in this work has an operating wavelength ...