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Towards resonant-state THz laser based on strained p
Towards resonant-state THz laser based on strained p

Demonstration of a large-scale optical exceptional point structure Liang Feng, Xuefeng Zhu,
Demonstration of a large-scale optical exceptional point structure Liang Feng, Xuefeng Zhu,

Fabrication and Application of Phase only Holograms for High
Fabrication and Application of Phase only Holograms for High

... 25 mm× 25 mm×1 mm soda lime microscope slides from Carl Roth GmbH, GE 124 fused quartz slides from TED PELLA, Inc., and a 1 mm thick 25.4 mm in diameter fused silica window broadband AR coated for 350 – 700 nm from Thorlabs, Inc. In order to achieve localized ablation of the ITO nanoparticle layers, ...
Refractive Index Measurement within a Photonic Crystal Fibre Based on Short Wavelength Diffraction
Refractive Index Measurement within a Photonic Crystal Fibre Based on Short Wavelength Diffraction

Pixel level optical-transfer-function design based on the surface
Pixel level optical-transfer-function design based on the surface

... Optical transfer function (OTF) characterizes the response of an imaging system as a function of spatial frequency of the input signal. Modification of OTF (sometimes referred as spatial filtering) is of significant importance for modern imaging and vision system designs. The implementation of spati ...
Brownian motion of a colloidal particle immersed in a polymeric
Brownian motion of a colloidal particle immersed in a polymeric

... W (∆z, ρ). Nonetheless, this integral predicts a finite number of concentric rings. More important, the last ring is the brightest and its size changes monotonically as a function of the separation Zi between the sphere and the FP, as sketched in Fig. 1. Instead of using Eq. (1), we opted to do an e ...
Feedback-induced catastrophic optical mirror damage
Feedback-induced catastrophic optical mirror damage

... the most efficient narrow-band light sources and convert up to 73 percent of electrical energy into light [2]. To achieve higher output powers, it has become common to increase the laser cavity lengths leading to improved thermal resistances but decreased wall-plug efficiencies. To prevent smaller w ...
OFS Capabilities 09.qxp:Layout 1
OFS Capabilities 09.qxp:Layout 1

Electron beam lithography designed silver nano
Electron beam lithography designed silver nano

... EBL, on the other hand, is a modified SEM system that has superior properties compared to other optical or chemical patterning techniques, such as the precise placement and design of arbitrarily shaped NPs with a large selection of geometries of various sizes with fine features. It offers a high res ...
A depolarization criterion in Mueller matrices
A depolarization criterion in Mueller matrices

... So, equation (3) is a necessary condition for M to describe a non-depolarizing system. However, we are now going to prove that equation (3) is also a sufficient condition. For an incident, totally polarized light beam, a depolarizing optical system produces an incoherent superposition of totally pol ...
Costas-Loop Based Carrier Recovery in Optical Coherent Intersatellite Communications Systems Semjon Schaefer
Costas-Loop Based Carrier Recovery in Optical Coherent Intersatellite Communications Systems Semjon Schaefer

Diode Laser Characteristics
Diode Laser Characteristics

Microscope File
Microscope File

... analyze a rectangular region. Magnification of the image is achieved by displaying the data from scanning a physically small sample area on a relatively large screen. These microscopes have the same resolution limit as wide field optical, probe, and electron microscopes. Scanning probe microscopes a ...
CHAPTER 3
CHAPTER 3

... 1- Impurities in fiber material - occurs due to electronic transitions between the energy levels and because of charge transitions from one ion to another. A major source of attenuation is from transition of metal impurity ions such as iron, chromium, cobalt, and copper 2- Intrinsic absorption- Intr ...
Intersatellite laser ranging instrument for the GRACE
Intersatellite laser ranging instrument for the GRACE

... One significant challenge is the removal of the temporal variations of the Earth’s gravitational field with periods shorter than one month which are aliased due to undersampling (Knudsen and Andersen 2002; Seo et al. 2008; Loomis et al. 2011). These high frequency variations can be caused by tides ( ...
5. Optical fiber
5. Optical fiber

... large bandwidth and hence a large amount of information can be transmitted. For this reason one wants to use light as a carrier wave. Unlike radio waves, light cannot be transmitted through open atmosphere for long distances. The reason being that the scattering of electromagnetic radiation takes pl ...
Electro Optic Sampling of Ultrashort Mid
Electro Optic Sampling of Ultrashort Mid

... of measurements made with and without a sample, or measurements made at various temperatures, probe beam delay times, etc. ...
Double-pass acousto-optic modulator system
Double-pass acousto-optic modulator system

... fiber. This presents a challenge when the frequency of the light being injected into the fiber is ramped with AOMs, since the Bragg angle depends on the modulation frequency. The alignment problems caused by AOM frequency sweeps can be practically eliminated by using the doublepass configuration, in ...
Slides - Jung Y. Huang
Slides - Jung Y. Huang

... Maximum-entropy phase-retrieval procedure for sumfrequency vibrational spectroscopy Time-resolved two-dimensional infrared absorption correlation spectroscopy of ferroelectric liquid crystal (FLC) without and with a doping of zinc oxide nanoparticles Active spectroscopy to guide the evolution of a c ...
Lens equation for flat lenses made with hyperbolic
Lens equation for flat lenses made with hyperbolic

... the resolution [10]. Beyond their near-field properties, hyperbolic metamaterials have also been used to make hyperlenses that provide far-field images with subwavelength resolution [9,11–13]. As depicted in several works, this property derives from the compression of the angular frequency, which al ...
LASER APPLICATIONS TO MEDICINE AND BIOLOGY
LASER APPLICATIONS TO MEDICINE AND BIOLOGY

... EMISSION OF RADIATION ...
Introduction - Research
Introduction - Research

... cellular processes within cardiac myocytes, most notably contractile force. Quantifying the magnitude of the calcium flux by cardiac myocytes should allow for the development of a relationship between said calcium flux and the contractile force of individual myocytes. Examining cells at a point in t ...
Optical switches
Optical switches

... • more difficult to splice and to exactly align two fibers together • suitable for transmitting modulated signals at 40 Gbit/s or higher and up to 200 km without amplification P. Raatikainen ...
Optical properties of the human tissue
Optical properties of the human tissue

... et al. // Appl. Opt., 1993, Vol. 32(4), P. 559-568) and inverse Monte Carlo simulations. The IAD method is widely used in tissue optics for processing the experimental data of spectrophotometry with integrating spheres. This method allows one to determine the absorption and the reduced scattering co ...
Contactless visible light probing for nanoscale ICs through 10 μm
Contactless visible light probing for nanoscale ICs through 10 μm

... bulk silicon. Resolution is then limited to identify nodes of 120 nm technologies, 90 nm or even 60 nm only with uncertainty. As a result, solid immersion lenses (SIL) have been introduced increasing the NIR resolution by the index of refraction, 3.5 for a silicon SIL. This extends the application o ...
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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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