Results 11 to 20 of about 107,717 (203)
Use of diffuse reflections in tunable diode laser spectroscopy [PDF]
, 2009 Tunable diode laser absorption spectroscopy (TDLAS) is an optical gas sensing technique in which the emission frequency of a laser diode is tuned over a gas absorption line of interest.
Masiyano, Dackson
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In-process fast surface measurement using wavelength scanning interferometry [PDF]
, 2012 A wavelength scanning interferometry system for fast areal surface measurement of micro and nano-scale surfaces which is immune to environmental noise is introduced in this paper. It can be used for surface measurement of discontinuous surface profiles
Gao, F. +4 more
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Surface strain measurement using pulsed laser shearography with fibre-optic imaging bundles [PDF]
, 2008 This thesis describes the development of a shearography instrument for the quantitative measurement of surface strain on dynamic test objects. Shearography is a non-contact, full-field interferometric speckle technique used for the measurement of ...
Francis, Daniel
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Applied Sciences, 2020 This paper presents a new processing method for denoising interferograms obtained by digital holographic speckle pattern interferometry (DHSPI) to serve in the structural diagnosis of artworks.
Ketao Yan +4 more
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Efficient phase unwrapping [PDF]
, 2005 In the field of optical interferometry, two-dimensional projections of light interference patterns are often analysed in order to obtain measurements of interest.
AI-Sawaf, Firas
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Promise and challenge of DUV speckle interferometry
, 2022 S.117-122The paper explains the benefits and the application limits of micro speckle interferometry (MSI) and it shows the potential for improvements when a deep UV laser source is used.
Aswendt, P.
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Low-coherence optical fibre speckle interferometry [PDF]
, 2006 This paper describes the development of optical fibre low-coherence speckle interferometers capable of three-dimensional surface profiling with a resolution of 10–20 µm and a depth range of typically tens of centimetres.
Balboa, Itziar +2 more
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Nuclear Materials and Energy, 2017 Temporal phase-shifting speckle interferometry is proposed to measure plasma-facing materials’ (PFMs) topography variation in tokamak. In this approach, laser ablation method is used to simulate erosion and redeposition, and polished molybdenum/tungsten (
Xiaoqian Cui +4 more
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Astronomical optical interferometry, I: Methods and instrumentation [PDF]
Serbian Astronomical Journal, 2010 Previous decade has seen an achievement of large interferometric projects including 8-10m telescopes and 100m class baselines. Modern computer and control technology has enabled the interferometric combination of light from separate telescopes ...
Jankov S.
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Digital, 2023 In this paper, based on Gaussian 1σ-criterion and histogram segmentation, a weighted least-squares algorithm is applied and validated on digital holographic speckle pattern interferometric data to perform phase separation on the complex interference ...
Zhenkai Chen +4 more
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