two-frequency laser pulse
Analysis and prediction of dimensions and cost of laser micro-machining internal channel fabrication process
... and laser power, P; while PRF = 23 kHz on the micro-channels’ width and cost ...These two 3D graphs show that increased laser power increases the micro-channel width while having negligible effect on ...
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An ANN and RSM Integrated Approach for Predict the Response in Welding of Dissimilar Metal by Pulsed Nd:YAG Laser
... Two plates of AISI 304 stainless steel and copper are taken into consideration as explained above for the experiments i.e. butt welding. The welding is carried out according to RSM design matrix as shown in Table ...
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Separation of Surface Hardened Glass with Non-ablation Laser Technique
... absorption laser pulses induced optical breakdown, melting and plasma expansion throughout the glass thickness from bottom to ...near-infrared laser pulses were used. The laser beam was focused with ...
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Effects of Welding Parameters on the Mechanical Performance of Laser Welded Nitinol
... and pulse frequency) were shown to strongly influence the mechanical properties (tensile strength and ductility) of the micro laser welded NiTi ...lower pulse frequency resulted in ...
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Time Frequency Analysis of Higher Harmonic Generation in a Three Color Laser Pulse
... attosecond pulse takes ...attosecond pulse becomes ...chirped laser pulses in order to amplify the laser ...or two laser pulses to the fundamental laser pulse, ...
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Welding Characteristic Analysis of Hybrid Welding on 2014 Aluminum Alloy
... of laser-high frequency pulse TIG compound ...the two heat sources’ welding process can effectively reduces and even eliminates weld blowhole ...modulation pulse, while blowhole in pool ...
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Micromachining with single mode fibre lasers for medical device production
... peak pulse power applied to create the cut shown in figure 67 was 20 ...have two distinct ...a pulse power of 40 W. The higher peak pulse power increased the striations in zone I, only at the ...
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Shape and Collision Frequency Effect on Heating of Femtosecond Laser Pulse Irradiated Nanostructures
... collision frequency of υ/ω=1. For nanotubes also the two resonances are noted the absorption in the vicinity of low density resonance is quite small compared to the high density ...
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Single cycle terawatt twisted light pulses at midinfrared wavelengths above 10μm
... Gaussian laser pulses, the wake driven by the LG laser pulse exhibits a donut-like structure with an off-axis hollow density ...the laser pulse propagation into the plasma ...obvious ...
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CT-guided laser probe for ablation of brain tumors
... for laser ablation ...the laser beam such as wavelength , pulse du- ration, pulse frequency, energy density, power density total irradiation time, ...controlling laser beam ...
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Effect of Different Irradiation Times on the Occlusion of Dentinal Tubules When Using a Nd:YAG Laser: An in Vitro SEM Study
... Nd:YAG laser with fixed factors of 120 mJ and 5 Hz, in attempts to achieve 100% tubule occlusion ...increasing laser ir- radiation times, should be confirmed by larger ...
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Temperature Effect towards DFB Laser Wavelength on Microwave Generation Based on Two Optical Wave Mixing
... Semiconductor laser can be implemented in various fields, such as for telecommunication, radar, spectroscopy and ...application, laser can be applied to generate microwave with heterodyne technique by ...
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Pulsed 980 nm short wavelength infrared neural stimulation in cochlea and laser parameter effects on auditory response characteristics
... the laser-tissue interaction have been the topic of discussion in relevant ...pulsed laser energy and converted into heat, which resulted in the heat gradient ...to laser radiation might be dominated ...
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Ultrathin DSAEK Tissue Prepared With a Low Pulse Energy, High-Frequency Femtosecond Laser
... This concentric ring pattern is likely the result of an applanation effect of the laser deforming the posterior stoma more than the anterior stroma. It is unclear, however, why some tissues in this study developed ...
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Study of Luminescence by Laser Induced Deposition Process for Materials with Different Buffer Gases and Pressure
... accurately. Laser is focused on the sample studied by zinc solenoid lens (ZnSe) of focal length (10 cm) placed in front of a window in a specific ...Pulsed laser energy measured by energy scale (Joul Meter) ...
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Ultrafast demagnetizing fields from first principles
... optical pulse (pump) and then the magneti- zation dynamics is monitored by analyzing a second signal (probe) ...and laser-generated superdiffusive spin currents ...
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Schultze, Martin (2008): Attosecond real time observation of ionization and electron-electron interactions. Dissertation, LMU München: Fakultät für Physik
... of two trajectories as manifested by the two-bump structure within the reflectance bandwidth of the multilayer ...the laser field was adjusted to generate spectra similar to case 72° with a FWHM of ~ ...
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18 Radar Principles pdf
... rectangular pulse. This pulse is supplied by a transmitter unit called the ...high-voltage pulse switches the oscillator on and off to supply high-power electromagnetic ...modulator pulse ...
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Pulsed Nd :YAG laser micro welding of stainless steel material
... Nd:YAG laser, the major process variables include the laser pulse energy, pulse time, beam diameter and intensity distribution, focal position, and material-dependent properties, such as ...
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Plasma optical modulators for intense lasers
... amplitude, frequency, phase and polarization) of a light beam in a controllable manner, by making use of electro-optic effects to change the refractive index of a material when an external radio-frequency ...
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