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Beam Splitters A beam splitter is a device that`s used to divide an
Beam Splitters A beam splitter is a device that`s used to divide an

... that have a higher reflectance than any metal can be produced. These surfaces generally are composed of several dielectric materials and use the principle of interference to produce high reflectance values. Notice that reflectances very near to 100% can be achieved by this method. Consider Figure 1 ...
Accepted version  - Queen Mary University of London
Accepted version - Queen Mary University of London

... particles without special requirement of the shape and/or material composition of particles. Optical vortex is a typical beam that possesses OAM4, 23. Compared with laser beam being focused directly to the particle, optical vortex with doughnutshaped intensity distribution leads to less instant hea ...
Chapter 4 Photonic Sources
Chapter 4 Photonic Sources

Sum frequency generation spectroscopy (SFG)
Sum frequency generation spectroscopy (SFG)

...  SFG has advantages in its ability to be monolayer surface sensitive, ability to be performed in situ (for example aqueous surfaces and in gases), and not causing much damage to the sample surface.  SFG is comparable to second harmonic generation (SFG is a more general form) and Infrared and Raman ...
Chapter 4 Optical Source
Chapter 4 Optical Source

Gauthier Abstracts - Department of Electronics
Gauthier Abstracts - Department of Electronics

... Optics Communications, Volume 329, Pages 154–162 Authors: Robert C Gauthier, Mohammed A. Alzahrani,, Seyed Hamed Jafari ...
Optical bistability in a Vertical-Cavity Semiconductor Optical Amplifier
Optical bistability in a Vertical-Cavity Semiconductor Optical Amplifier

... integration is limited. In the past few years, VCSOAs have drawn increasing research attention [7,8]. As compared to in-plane SOAs, they exhibit several advantages including higher coupling efficiency to optical fibers and lower noise figure due to their circular geometry and small dimensions, respe ...
Synopsis by Shawn Miller
Synopsis by Shawn Miller

... path. Scanning of an optical surface such as a mirror or grating are common applications of this. A diffraction grating monochromator like the one found in the University of Arizona physics department’s advanced lab is another example where two coupled angular drives move two gratings, giving 0.1Ǻ s ...
A New Fiber Optic Spring
A New Fiber Optic Spring

... applications such as the measurement of force, acceleration, vibration, and pressure. Although they provide different information, coiled metal springs have been used for at least 500 years in a variety of machine design applications and mechanisms [1]. Hooke's law, which is widely used in physical ...
Suppression of optical damage at 532 nm in
Suppression of optical damage at 532 nm in

... interference between the incident and scattered light caused by the light-induced refractive index modulation. In contrast, the CCD image for Sample 4 shows the beam profile retaining its Gaussian shape albeit somewhat more focused. The variation in the spatial uniformity of the beam profile is due ...
Chapter 1 Data Communications and Networks Overview
Chapter 1 Data Communications and Networks Overview

... predicting experimental data that are not used in the training session.  GP find a model that depend on two variables (, T) not one variable as in the literature. ...
Chapter 1 Data Communications and Networks Overview
Chapter 1 Data Communications and Networks Overview

... predicting experimental data that are not used in the training session.  GP find a model that depend on two variables (, T) not one variable as in the literature. ...
Long Haul Fiber Optic Transmission Systems : Modeling and
Long Haul Fiber Optic Transmission Systems : Modeling and

Inexpensive optical tweezers for undergraduate laboratories
Inexpensive optical tweezers for undergraduate laboratories

Building The optimal optical guitar
Building The optimal optical guitar

... Acoustics is the branch of physics that studies the properties and behavior of sound. Focus: Sound behavior as a wave ...
Analysis and Compensation of Four Wave Mixing Products in
Analysis and Compensation of Four Wave Mixing Products in

... fiber [2]. Communications in WDM generate new waves under appropriate condition through a variety of Non-linear phenomena such as Stimulated Raman Scattering (SRS), Stimulated Brillouin Scattering (SBS), Self-Phase Modulation (SPM), and Four Wave Mixing (FWM). Four wave mixing or four photon mixing ...
Lab 2: Abbe Theory of Imaging
Lab 2: Abbe Theory of Imaging

... distribution does not have any wiggles, and when it is focused, it produces a single small spot, i.e. the original beam contains only low spatial frequencies. On the other hand, if we pass this beam through a grating or specimen which introduces many variations on the laser profile, then in the foca ...
Optical Measurements of Pollution Dispersion at
Optical Measurements of Pollution Dispersion at

... for wind profile measurements, and the airport’s own meteorological data. For the application of optical instrumentation at busy commercial airports, it is of course essential that they be eye-safe: while it was the intention to target the emissions from the aircraft rather than the aircraft themsel ...
Data Communication & Network
Data Communication & Network

Experimental Demonstration of a 2
Experimental Demonstration of a 2

... multiplied with the conjugate of the target pattern to achieve the correlation output. For instance, to identify the appearance of a six-length pattern [BDCABD] in a long stream of optical QPSK symbols, a 3×2-taps OTDL might be used in which the correlator weights are set to the phase conjugate of t ...
Opto-Mechanical Image Quality Degradation of Single Point
Opto-Mechanical Image Quality Degradation of Single Point

... Background on the PSD The Power Spectral Density (PSD) is a function that describes the amount of error in a surface a particular spatial frequency. As an example for those who are not familiar with Fourier transforms, consider a sheet of sand paper with sand grains that are 100 m wide. We can repr ...
Low-threshold organic laser based on an oligofluorene truxene
Low-threshold organic laser based on an oligofluorene truxene

Whispering-gallery-mode microdisk lasers
Whispering-gallery-mode microdisk lasers

... All the 3D motions have accuracy around 1 nm. The functional material was RhB-doped SU-8 with an overall concentration of 1 wt%. The chosen concentration of 1 wt% is a trade-off between lasing action and fabrication process. In fact, concentrations between 1 wt% and 2 wt% are satisfying. The mixed r ...
Polarization and Optical Properties of n-Layer Doped with Au Nanoparticles
Polarization and Optical Properties of n-Layer Doped with Au Nanoparticles

... wavelength range and angle of incidence. In this paper, this subject is investigated. Multilayer structures that are periodical in their optical properties in one direction, have been known for a long time and represents more than a century old subject of investigation [1]. Most common applications ...
Tutorial_Mansuripur_CDvsDVD
Tutorial_Mansuripur_CDvsDVD

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Optical tweezers



Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.
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