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Laser Doppler Velocimetry

Laser Doppler Velocimetry news and technical articles from Laser Focus World. Search Laser Doppler Velocimetry latest and archived news and articles

  1. LASER DOPPLER VELOCIMETRY : Fiberoptic probe measures turbine tip clearance

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    Thu, 1 Jun 2006

    In its simplest form, laser Doppler velocimetry (LDV) is a technique to measure the direction and speed of fluids or air by crossing two beams of laser light in the flow of …

  2. PHOTONICS APPLIED: OPTICAL SENSING: Downhole sensing puts fiber optics to the test

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    Fri, 1 Apr 2011

    … and flow monitoring of industrial gases associated with the downhole process (see figure). Recognizing that laser Doppler velocimetry (LDV) falls short for this application due to its high cost and need to particle-seed the flows due to low …

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  1. MetroLaser Inc

    Buyer's Guide

    Thu, 3 Jul 2008

    … optical system design, breadboarding, and prototyping. Custom systems include holography, particle-sizing, laser doppler velocimetry , spectroscopy systems, and nondestructive testing. Products include laser vibrometers, tunable laser diode …

  2. Fibercore launches new fiber for medical and biotechnical applications

    Article

    Fri, 23 Jan 2009

    … high beam quality to be delivered in ultraviolet, blue, or green wavelengths (300 nm to 560 nm) such as laser Doppler velocimetry (LDV), laser Doppler anenometry (LDA), holography, and two-photon spectroscopy. The new fiber addresses …

  3. BIOMEDICAL IMAGING: OCT images the developing heart in vivo

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    Thu, 1 Nov 2007

    … adequate signals can be obtained from early embryos. To circumvent this problem we derived a gating signal using laser Doppler velocimetry (LDV) to noninvasively extract a flow signal from one of the outer vitelline vessels. As a demonstration …

  5. Post-sales support can pay for itself

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    Thu, 1 Aug 1996

    … your on-site service organization. A good industry example is TSI (St. Paul, MN), a manufacturer of laser Doppler velocimetry equipment. TSI offers on-site repair because its equipment is built into manufacturing lines. Other than …

  6. DETECTORS & IMAGING: Molecular tagging velocimetry maps flow fields

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    Mon, 1 May 2000

    … have drawbacks. For example, point-by-point measurement methods of characterizing fluid flow, including laser Doppler velocimetry and hot-wire techniques, are limited to steady or periodic flows. Full-field methods, such as particle …

  7. Flow visualization improves design of many systems

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    Tue, 1 Sep 1998

    … the system under study, optical techniques including laser-induced fluorescence, Raman scattering, and laser Doppler velocimetry have been used for flow diagnostics. During the early 1980s, progress in the development of laser sources …

  8. INTERFEROMETRY: Encoder measures motion through interferometry

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    Wed, 1 Mar 2000

    … Coherent methods that measure transverse motion parallel to the measured surface include speckle methods1 and laser Doppler velocimetry .2 Both suffer from a low signal-to-noise ratio (SNR), with speckle methods also being sensitive to …

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