[PDF] Top 20 High frequency laser-ultrasonics
Has 9136 "High frequency laser-ultrasonics" found on our website. Below are the top 20 most common "High frequency laser-ultrasonics".
High frequency laser-ultrasonics
... of laser-ultrasonics to frequencies as high as 500 MHz was ...as high as 500 MHz; the thickness and ultrasonic attenuation at 184 MHz of a 17 µm thick aluminum foil was obtained from the first ... Voir le document complet
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Femtosecond Laser-Excitation-Driven High Frequency Standing Spin Waves in Nanoscale Dielectric Thin Films of Iron Garnets
... femtosecond laser pulses have been used as an efficient stimulus to excite a coherent spin precession [16,17] ...femtosecond laser pulses can excite exchange standing SWs (SSWs) in metallic [18,19] and ... Voir le document complet
7
High spectral purity laser characterization with a self-heterodyne frequency discriminator
... Keywords—laser; frequency noise; phase noise; metrology; frequency discriminator ...to high quality factor optical resonators (WGM resonators, fiber resonators…), is an opportunity to develop ... Voir le document complet
5
HIGH FREQUENCY GRAVITATIONAL WAVES GENERATION IN LASER PLASMA INTERACTION
... low frequency spectral band between 10 Hz and 10 ...of high frequency gravitational waves (HFGW: ν > 100 kHz) were considered and this renew an interest for a GW Hertz experiment, 4 which consists ... Voir le document complet
4
High resolution time and frequency domain spectroscopy of solid state laser materials
... / La version de cette publication peut être l’une des suivantes : la version prépublication de l’auteur, la version acceptée du manuscrit ou la version de l’éditeur. Access and use of [r] ... Voir le document complet
13
Calibration of an echelle spectrograph with an astro-comb: a laser frequency comb with very high repetition rate
... with high resolution astrophysical spectrographs are the periods and lower limits on the masses of planets orbiting such ...broadband, high line-density, bright wavelength calibrator that can be deployed ... Voir le document complet
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Influence of steel heat treatment on ultrasonic absorption measured by laser ultrasonics
... at high temperature, something not obvious to do with contact ...a laser pulse is broadband, a single measurement can provide ultrasound absorption over a wide frequency ... Voir le document complet
7
High-frequency exciton-polariton clock generator
... oscillation frequency. The detuning δ of the laser is also an important parameter in order to optimize the output frequency, as shown in ...the laser pumping decreases with its detun- ing with ... Voir le document complet
6
Laser ultrasonics for defect detection and residual stress measurement of friction stir welds
... 3.2 Laser-ultrasonic setup for residual stress measurement The laser-ultrasonic setup is presented in Figure ...generation laser, detection laser and photorefractive interferometer are used, ... Voir le document complet
21
Efficient diode laser line narrowing using dual, feed-forward + feed-back laser frequency control
... achieve high-efficiency spectral narrowing of a DFB diode laser appears particularly ...spectrally-narrowed laser source by beating the beam with a reference ...total laser power (96% in a ± ... Voir le document complet
4
Frequency resolved high-harmonic wavefront characterization
... a high-harmonic (or attosecond) pulse, or of an x-ray free-electron laser beam, as it is to characterize its temporal ...The high harmonics carry the combined signature of underlying quantum physical ... Voir le document complet
4
Thickness and grain size monitoring in seamless tube making process using laser-ultrasonics
... The use of split spectrum processing (SSP) for the case of very low SNR was also considered. SSP consists in the decomposition of a signal into multiple signals by applying a set of narrow-band Gaussian filters. The set ... Voir le document complet
6
Defect detection and residual stress measurement in friction stir welds using laser ultrasonics
... welding, laser ultrasonics, synthetic aperture focusing technique, kissing bond, residual stress, surface skimming longitudinal wave ...produces high strength and good finish ... Voir le document complet
8
Gap In A Laser Frequency He-ne At 632.8 Nm
... double-output laser cavity exhibit distinctive features, manifesting themselves through typical dissymmetry in the corresponding spectral line ...gas laser appears with a clear but unpredictable shift of ... Voir le document complet
7
In-Situ Monitoring of Microstructure during Thermomechanical Simulations using Laser-Ultrasonics
... <110>, and <111> directions are 5488, 6225, and 6453 m/s, respectively. Clearly, if the <111> directions of the single crystals align perpendicularly to the surface, the velocity will be higher in that ... Voir le document complet
8
Applications of Laser-Ultrasonics and Laser Tapping to Aerospace Composite Structures
... excitation laser is a CO2 TEA laser, which delivers pulses of 120 ns duration at ...This laser makes the detached area to lift up and vibrate nearly like a membrane clamped at its edges and generates ... Voir le document complet
8
Applications of Laser-Ultrasonics to the Automotive Industry
... Excimer laser for different thicknesses of the basecoat after 1 ...keep high strength joints and reduce the vehicle ...the frequency domain with a model for propagation in a multilayer that includes ... Voir le document complet
9
High frequency (>30 MHz) flexible broadband transducers
... that high frequency ultrasound can be efficiently generated and ...substrate, high flexibility and broad bandwidth of the developed UTs have been ...their frequency components could be higher ... Voir le document complet
7
Radio frequency high voltage power supplies
... L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB. NRC Publicat[r] ... Voir le document complet
65
Developing high-frequency equities trading models
... In particular, we want to build a predictive model to estimate future returns on US equities on a high frequency environment, with approximate holding periods on t[r] ... Voir le document complet
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