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Print this article - Indian Journal of Science and Technology
Print this article - Indian Journal of Science and Technology

... the coated ZnO nanostructures acted as external stimulus. The ZnO nanostructures on the tapered region play an important role by causing rapid adsorption of water molecules. Apart from that, the gradual process of the chemical etching enables much simpler monitoring of the waist diameter. In contras ...
Porous Waveguide in the Kretschmann Configuration for Small Molecule Detection
Porous Waveguide in the Kretschmann Configuration for Small Molecule Detection

... with dielectric constant ε3 is deposited on top of the cladding layer, acting as the waveguide layer or core layer. For our theoretical calculations, we consider the semi-infinite medium on the opposite side of the PSi layer to be air; however, when the sensor is used with a microfluidics flow cell, ...
Tensorial split-field finite-difference time-domain approach for second- and third-order nonlinear materials
Tensorial split-field finite-difference time-domain approach for second- and third-order nonlinear materials

... nonlinear susceptibilities is presented. In SF-FDTD for nonlinear periodic media, the Floquet theorem is taken into account as in the corresponding linear case. Furthermore, the nonlinear dispersion of the third-order susceptibility is also included in the formulation. The improvement is based on a ...
soliton - Széchenyi István Egyetem
soliton - Széchenyi István Egyetem

... Erbium doped fiber amplifiers, periodically placed in the transmission line  distance of the amplifiers should be less then the soliton dispersion length  dispersion shifted fibers or filters for reshaping quantum noise arise  spontaneous emission noise  Gordon—House jitter ESM Zilina 2008 ...
Multiple-image digital photography
Multiple-image digital photography

... [Devaney 2005] ...
A mobile, high-precision atom-interferometer and its
A mobile, high-precision atom-interferometer and its

... where G denotes the gravitational constant and r the distance between the centers of the masses. The gravitational force has some characteristic properties: It is always attractive, has infinite range, and it cannot be shielded. By now, Newton’s law of universal gravitation can be seen as an approxi ...
Ultrafast Carrier and Lattice Dynamics in Highly
Ultrafast Carrier and Lattice Dynamics in Highly

... mind always kept me honest and on my toes when discussing physics and working in the lab. From the moment I joined the lab in 1996 up until Paul’s graduation in 2000 we developed a frienship that hopefully will last a lifetime. xi ...
Polarization and angle dependence for hyper-Rayleigh scattering from local
Polarization and angle dependence for hyper-Rayleigh scattering from local

The effect of skin phototype on laser propagation through skin
The effect of skin phototype on laser propagation through skin

Bessel beams: diffraction in a new light
Bessel beams: diffraction in a new light

... minimum diameter of 34l with l being the beam wavelength [1]) which did not spread. Of course the reality is a little more down to earth. A Bessel beam gets its name from the description of such a beam using a Bessel function, and this leads to a predicted cross-sectional profile of a set of concentr ...
RESONATOR OPTICS
RESONATOR OPTICS

... The frequency selectivity of an optical resonator makes it useful as an optical filter or spectrum analyzer. Its most important use, however, is as a “container” within which laser light is generated. The laser is an optical resonator containing a medium that amplifies light. The resonator determine ...
Prism, Prism, Prism!
Prism, Prism, Prism!

... 2. Understand spatial perception changes caused by viewing through prism 3. Learn about therapy techniques that utilize prisms Compensatory – reduces work, moves the image to where the eye sees Therapeutic – increases work, moves the image to where we want the eyes to look Therapeutic prism is used ...
Pulse splitting by modulating the thickness of buffer layer of two
Pulse splitting by modulating the thickness of buffer layer of two

... Figure 4(a) and 4(b) show the instantaneous diffracted intensity distributions of the TLVHG when thickness of the buffer layer changes from 4mm to 11mm. It can be seen when thickness of the buffer layer increases, the central intensity of diffracted pulse decreases further. When thickness increases ...
OPTICAL AND PASSIVATION PROPERTIES OF DOUBLE LAYER A
OPTICAL AND PASSIVATION PROPERTIES OF DOUBLE LAYER A

... SiNy/a-Si:H ARC structures by variation and adjusting of the a-Si:H layer thickness. Experimental results on the transmittance for SiNx/a-Si:H/glass, a-Si:H/glass, SiNx/glass and on the effective lifetime measurements for SiNy/aSi:H/p-Si/a-Si:H/SiNx, SiNy/p-Si/SiNx, a-Si:H/p-Si/a-Si:H structures wit ...
Replication of Holograms with Corn Syrup by Rubbing
Replication of Holograms with Corn Syrup by Rubbing

... (b) Using a spinner at 600 rpm for 10 s, a thin and uniform film layer is obtained at 23 °C. (c) Hot air (70 °C) is then immediately applied to the sample for five minutes 23 °C in order to extract a larger quantity of water from the film. (d) The amplitude (binary or gray levels) or relief mask (ho ...
DEPARTMENT OF PHYSICS • Undergraduate Courses
DEPARTMENT OF PHYSICS • Undergraduate Courses

Integrated Optic/Nanofluidic Detection Device with Plasmonic Readout
Integrated Optic/Nanofluidic Detection Device with Plasmonic Readout

... fluid within the microfluidic channel. Light from some source is focused via external optics to a spot inside the channel. Light emitted from the sample is collected via optics and filtered externally. There are many sources of noise in this system, as both the excitation and signal light must trave ...
Chapter 3 Passive resonators
Chapter 3 Passive resonators

... emitted frequency. By contrast with a real cavity, we will limit our study to empty resonators. Real cavity includes an active medium and its complete study is usually rather difficult. However experiments show that the general behavior obtained with empty resonator can be applied to real laser cavi ...
Metastable noble gas atoms in strong
Metastable noble gas atoms in strong

... ground between perturbative multiphoton ionization and tunnel ionization. Physically, the Keldysh parameter is an adiabatic ratio that compares the time required to ionize an atom in a strong field to the oscillation period of the ionizing radiation. When the period is long compared to the ionizatio ...
PDF - Universität Innsbruck
PDF - Universität Innsbruck

... scattering off small imperfections. This resembles the gedankenexperiment of the Einstein-Bohr photon box [1.16], and also a version of Schrödinger’s cat could be realised, although not in the literal sense but as quantum-mechanical superposition of distinctive classical states of light [1.17]. Add ...
Design and fabrication of blazed binary diffractive - HAL
Design and fabrication of blazed binary diffractive - HAL

... 96% (100% 2 4% because of Fresnel losses) obtained for blazed gratings. The drop in efficiency observed at small periods is well known and is considered to be a major obstacle for the production of high-speed and highperformance diffractive lenses. From Fig. 2 it is noteworthy that the blazed-index ...
Retarder Principles
Retarder Principles

... From the equations shown on the previous page, a true zeroorder quartz quarter waveplate for 550 nm operation is only 15 mm thick. Such a thin, fragile retarder presents handling difficulties in both fabrication and mounting. More commonly, multiple-order quartz retarders having a whole number of wa ...
Semiperiodicity versus periodicity for ultra broadband optical
Semiperiodicity versus periodicity for ultra broadband optical

... capable of better photon control. The proposed structures are either two-dimensional (2-D) quasi-random patterns just on top of the active layer,10 or one-dimensional (1-D) quasi-periodic plasmonic front gratings,11 which we believe are not optimal choices for the intended solar cell design. A strai ...
optical guided waves and devices - Workspace
optical guided waves and devices - Workspace

... geometry with a core region of high refractive index surrounded by a lower-index cladding layer (as shown in Figure 1.1-1). ...
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Harold Hopkins (physicist)

Harold Horace Hopkins FRS (1918–1994) was a renowned British physicist. His Wave Theory of Aberrations, (published by Oxford University Press 1950), is central to all modern optical design and provides the mathematical analysis which enables the use of computers to create the wealth of high quality lenses available today. In addition to his theoretical work, his many inventions are in daily use throughout the world. These include zoom lenses, coherent fibre-optics and more recently the rod-lens endoscopes which 'opened the door' to modern key-hole surgery. He was the recipient of many of the world's most prestigious awards and was twice nominated for a Nobel Prize. His citation on receiving the Rumford Medal from the Royal Society in 1984 stated: ""In recognition of his many contributions to the theory and design of optical instruments, especially of a wide variety of important new medical instruments which have made a major contribution to clinical diagnosis and surgery.""
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