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Translation-invariant object recognition system using an optical correlator and a super-
Translation-invariant object recognition system using an optical correlator and a super-

Real-time fiber-based multi-functional spectral- domain optical coherence tomography at 1.3 m μ
Real-time fiber-based multi-functional spectral- domain optical coherence tomography at 1.3 m μ

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Laser microfabrication of alumina

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Two-photon cooling of magnesium atoms

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Optical trapping using cascade conical refraction of light

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Optics - Frederiksen

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... where tp is the pulse duration and ∆ν is the full width at half maximum. Nonlinear processes in the components of the resonator due to the high peak intensities of the laser pulses or insufficient modulation depth of the AOM such as dispersion can lead to deviations from this ideal value. For mode-l ...
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Shifting the spherical focus of a 4Pi focusing system

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JOURNAL OF T O THE EUROPEAN OPTI CAL SOCI ETY

Beam steering with spatial light modulators: Quantisation effects
Beam steering with spatial light modulators: Quantisation effects

... B. Hologram design So far, we have described the theoretical background for hologram design. From now on, we will develop the experimental details that need to be taken into consideration in hologram computation. For this purpose, we created a Matlab program. Due to the SLM non-flatness [4], a modif ...
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Laser Cutting
Laser Cutting

... Of course this was all theoretical, it was not until the 1950s that the detail of how to go about light amplification were finally worked out. It would be the 1960s before the first laser oscillatiors were actually constructed. These devices could emit an intense beam of light made up of photons whi ...
Astro-Madness: Student Table Keys
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Laser Collimation of a Chromium Beam Using Doppler Force Wen
Laser Collimation of a Chromium Beam Using Doppler Force Wen

... The remarkable capabilities of laser cooling and trapping techniques for the precise handing of atoms has led to great advances in the field of atom optics. One of the most promising applications of finely controlled neutral atom beams is direct-write atom lithography of nanometer-scale features, wh ...
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... to use compared to other types of lasers. • They can be used for many applications, and have the ability to be produced in a wide range of wavelengths and powers. • The most important electronic consideration is the fact that a precisely controlled current source is needed to regulate the amount of ...
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A Laser Module for 100Gbps Digital Coherent Optical Transmission System

... highly stable DFB (distributed feedback) LD. The light emitted from the front side (output side of the laser module) of the wavelength tunable LD passes through a lens where it is coupled to the optical fiber. The light emitted at the rear side (opposite side) enters the rear-side wavelength monitor ...
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... necessary to test the vacuum chamber viewports, which involved building a laser diode and an optical cavity. This paper will explore the theory behind both as well as their implementation. ...
optical design of an echelle grating based atomic emission
optical design of an echelle grating based atomic emission

... The echelle grating used in the instrument has 79 lines/mm, a ruled area of 254 mm X 128 mm, and a blaze angle of 740. The entrance slit is a square aperture of 40 µm X 40 µm. Mirrors M1 and M2 are 250 mm and 175 mm focal length respectively with aluminium high reflection coatings. The Littrow prism ...
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Super-resolution microscopy

Super-resolution microscopy is a form of light microscopy. Due to the diffraction of light, the resolution of conventional light microscopy is limited as stated by Ernst Abbe in 1873. A good approximation of the resolution attainable is the full width at half maximum (FWHM) of the point spread function, and a precise widefield microscope with high numerical aperture and visible light usually reaches a resolution of ~250 nm.Super-resolution techniques allow the capture of images with a higher resolution than the diffraction limit. They fall into two broad categories, ""true"" super-resolution techniques, which capture information contained in evanescent waves, and ""functional"" super-resolution techniques, which use clever experimental techniques and known limitations on the matter being imaged to reconstruct a super-resolution image.True subwavelength imaging techniques include those that utilize the Pendry Superlens and near field scanning optical microscopy, the 4Pi Microscope and structured illumination microscopy technologies like SIM and SMI. However, the majority of techniques of importance in biological imaging fall into the functional category.There are two major groups of methods for functional super-resolution microscopy: Deterministic super-resolution: The most commonly used emitters in biological microscopy, fluorophores, show a nonlinear response to excitation, and this nonlinear response can be exploited to enhance resolution. These methods include STED, GSD, RESOLFT and SSIM. Stochastic super-resolution: The chemical complexity of many molecular light sources gives them a complex temporal behaviour, which can be used to make several close-by fluorophores emit light at separate times and thereby become resolvable in time. These methods include SOFI and all single-molecule localization methods (SMLM) such as SPDM, SPDMphymod, PALM, FPALM, STORM and dSTORM.On October 8th, 2014, the Nobel Prize in Chemistry was awarded to Eric Betzig, W.E. Moerner and Stefan Hell for ""the development of super-resolved fluorescence microscopy,"" which brings ""optical microscopy into the nanodimension"".
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