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Electromagnetic waves
Electromagnetic waves

... and parallel to the direction of propagation of the wave l  C) parallel to each other and parallel to the direction of propagation of the wave l  D) parallel to each other and perpendicular to the direction of propagation of the wave ...
Generation of a dark hollow beam by a four
Generation of a dark hollow beam by a four

... lower photon-scattering rate, a lower atomic loss rate from photon-assisted collisions, a higher intensity gradient and so on, it would be interesting and worthwhile to generate some new DHBs and explore their new applications. Since 1990's, various techniques have been used to generate the DHBs, su ...
BACH, the Beamline for Advanced diCHroic and scattering
BACH, the Beamline for Advanced diCHroic and scattering

... dynamics of decay processes in condensed matter.iv With the help of circularly polarized light, they have also been employed to study element-specific moments as well as their energy distribution in the valence shell. The beamline optics has been designed to work either in a high brilliance mode, wh ...
Characterisation of the Tunable Laser Source
Characterisation of the Tunable Laser Source

... Fabry-Perot interferometers. The Fabry-Perot interferometer, shown in figure 2, consists of two highly reflective, parallel mirrors that act as a resonant cavity, which filters the incoming light. The resolution of Fabry-Perot interferometer-based optical spectrum analyzers, dependent on the reflect ...
UGPHS – 01 Elementary Mechanics Block-I Concepts in
UGPHS – 01 Elementary Mechanics Block-I Concepts in

APPENDIX When designing shape magnification into a lens, the two
APPENDIX When designing shape magnification into a lens, the two

... nomograph (see Figure A1) is a simple graphic way to represent the relationship between magnification, ...
Experiment Descriptions - USU Physics Department
Experiment Descriptions - USU Physics Department

... Explores the basics of holographic photography. Students record holographic images on film using a darkroom.. Provides good experience with lasers, optics elements, interferometry, and an optics bench. Emphasizes experimental technics in optics. Procedure is involved and time-consuming, but the end ...
On the chromatic aberration of microlenses
On the chromatic aberration of microlenses

... comparisons a wavelength of reference fixing Zp is required. It is now possible to plot the relative variations of this Zp against the wavelength of a defined spectrum. For example, Fig. 9 shows the variations as function of the wavelength of Zp expressed in percent of the Zp calibrated at 550 nm. T ...
7.1.3 Optimizing Light Confinement and Gain in Laser Diodes
7.1.3 Optimizing Light Confinement and Gain in Laser Diodes

... If we choose u(ν), all we have to do is to surround the active volume by "mirrors" on all 6 sides, a feat that can be achieved by enclosing the active volume with material that has a lower index of refraction. At the same time we make sure that in the active volume - and possibly around it - we have ...
two-slit interference,one photon at a time
two-slit interference,one photon at a time

... 2. Two-Slit Interference, One Photon at a Time: (by filtrated bulb light) The channel is opened, the laser turned off and the bulb lifted into place. The bulb intensity is set to about half of maximum. Because of the green filter, the number of photon passing through the channel is too rare to be de ...
Quantum Optics Team A: “Mach-Zehnder Interferometer and
Quantum Optics Team A: “Mach-Zehnder Interferometer and

1 Introduction 2 Theory of Optical Trapping
1 Introduction 2 Theory of Optical Trapping

... 4.2 Aligning and Operating the Setup In this section, a number of procedures for aligning and operating the setup are given. Please read them carefully. More detailed instructions will be given on the first day of the practical. • Never touch a mirror, lens, or filter with your fingers, since the fa ...
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... Visible and non-visible radiation from laser diodes and LEDs used in optical fibre communications systems is considered to be a safe application of laser technology. Light output is entirely confined to the core of the interconnected fibre, and does not leak through the cladding or outer sheath. If ...
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... data generated from chemical and physical analyses is critically dependent on three factors: ...
"Contrast Enhancement in Light Microscopy". In: Current Protocols in
"Contrast Enhancement in Light Microscopy". In: Current Protocols in

... refractive index or thickness result in an optical path difference between the two sheared wavefronts. When the wavefronts are recombined and made to oscillate in a common plane by an analyzer, different amounts of constructive or destructive interference produce distinct graylevel differences for o ...
A laser motor directly transforms light energy into mechanical
A laser motor directly transforms light energy into mechanical

... After showing that the radiation pressure from focused laser light was capable of manipulating small neutral particles,1 Ashkin invented the optical tweezer, now widely used in the biological sciences to manipulate objects.2 The most basic type of optical tweezer uses a high-precision microscope to ...
Reflect/Refract
Reflect/Refract

... the mirror is infinitely large •If the wavelength is sufficiently tiny compared to objects, this might be a good approximation i r •For the next week, we will always make this approximation Mirror •It’s called geometric optics •Physical optics will come later •In geometric optics, light waves are ...
optical trap
optical trap

... without damaging them. Optical tweezers prove very useful for this because, not only can they manipulate small particles very precisely, but, using infrared light, they can do so without causing damage. The development of the single beam optical trap was an important advance in optical tweezers, bec ...
UCL Undergraduate Preparatory Certificate in Science and Engineering Physics syllabus
UCL Undergraduate Preparatory Certificate in Science and Engineering Physics syllabus

... 1.1 Introduction to Physics SI units and dimensional analysis Uncertainties in Experimental Physics ...
telecom
telecom

... The angle of reflection is equal to the angle of incidence. ...
Contactless visible light probing for nanoscale ICs through 10 μm
Contactless visible light probing for nanoscale ICs through 10 μm

... has passed the telescope it will hit the detector D. Inside the telescope is the most important component of the confocal setup: the pinhole PH which has a very small diameter. This pinhole is placed exactly in the focal plane of the two telescope lenses TL1 and TL2. Light from point A can pass the ...
The long march of slow photonics
The long march of slow photonics

... The long march of slow photonics To the Editor — It is only in the past decade that the concept of slow wave propagation has penetrated the optical domain. Slow light has already been described by many researchers as a key to advances in optical signal processing, but in this new area many puzzles s ...
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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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