high-beam quality laser
Beam quality study for a grating based dielectric laser driven accelerator
... to laser waist radius and FWHM ...a high peak laser field with long waist radius and FWHM duration is preferred to achieve a considerable energy gain in a long-range acceleration; however, the ...
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High power two micron fibre bulk hybrid lasers
... guided-wave laser has a history almost as long as that of the laser itself [Snitzer61, ...of high-quality single mode rare-earth doped silica fibres with low propagation losses resulting in ...
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High quality electron beam acceleration by ionization injection in laser wakefields with mid-infrared dual-color lasers
... the laser, the wake and the injected electron ...the laser peak electric field evolution. At the beginning, the laser evolves as the theoretical predic- tion for a SWBL with a period of ∆ z = 1 ...
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A Sensitivity Study of 4340 Steel Hardness Profile Heat- Treated by Laser
... applications, laser hardening is a highly efficient process, because it is able to improve the hardness field, wear resistance, fatigue life and the surface tribology conditions of mechanical components, while ...
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Application and Development of Wavefront Sensor Technology
... optics, laser beam quality diagnosis, laser atmospheric communication, optical element and optics system detection, quantitative phase microscope, human eye aberration measurement and other ...
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High-Gain Low-Noise Pre-Amplifier and Narrow Band-Pass Filter for Photoacoustic Spectrometer
... a high-gain low-noise pre-amplifier and a narrow band-pass filter for photoacoustic spectrometer ...modulated laser beam applied on the sample, and it is found that the signal quality has been ...
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Plasma Mirrors for Cleaning Laser Pulses from the Infrared to the Ultraviolet
... observed high efficiency of the plasma mirror allows its direct use after the first amplifier, as even in this case more than 60% of the energy can be coupled to the ...the high reflectivity requires ...
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Optical trapping with superfocused high M2 laser diode beam
... higher-power laser diodes are prone to multiple transverse mode generation and filamentation that make it difficult to deploy these laser beams in applications that require tight focusing of the ...
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TERA MIR radiation : materials, generation, detection and applications II
... novel, high power Yb:doped pulsed nanosecond fiber laser system with exceptional beam quality, aluminum metal surfaces can be machined with high precision leading to a high ...
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Beam spot of Q-switched ND: YAG laser based on raster graphic
... the laser output powers of 20 megawatts scale and pulse durations of less than 100 nanoseconds are commonly ...The high-intensity pulses may be required to convert light from 1064 to become 532 nm through ...
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Conical diffraction and Bessel beam formation with a high optical quality biaxial crystal
... shaped beam with ½ћ net orbital angular momentum [10,11] may be ...Gaussian laser beam It also avoids some of the limitations of other Bessel beam formation techniques, such as the low ...
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Laser beam modulation by an acousto optic mode locker
... Typical results obtained from the experiment are shown in Figure 2. Figures 2(a) and 2(b) show the oscilloscope traces of HeNe CW signal before and after modulation by AOML respectively. After being modulated, the HeNe ...
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Optimal control of a space-borne laser system for a 100 m asteroid deflection under uncertainties
... the laser beam on different points on the asteroid surface such that a desired direction can be ...the laser pointing direction ...the laser beam on specific surface ...
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Plasmonic effects upon optical trapping of metal nanoparticles
... LG beam passes a magnifying telescope and subsequently enters a custom-built inverted microscope setup focusing the beam into the sample chamber with a microscope objective (Nikon Plan, 50x oil, NA ...at ...
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Laser-plasma generated very high energy electrons (VHEEs) in radiotherapy
... the laser beam interacts with plasma, electron beams with energy of at least 100 MeV and δE/E≈1% energy spread are ...electron beam blow-up over long drift propagation as they pass through Lanex ...
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Microstructural Investigation of Direct Metal Deposition of H13 Steel on High Strength Copper Substrate
... Fig 2 shows a DMD 505 machine installed at Swinburne and supplied by Precision Optical Manufacturing (POM) Inc, USA. The machine has been used to deposit H13 tool steel powder on Moldmax substrate, which is a ...
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OPTIMIZATION OF PROCESS PARAMETERS IN LASER BENDING OF INCONEL-625 METAL SHEET
... Fiber laser with maximum laser power of 50- 400W with wavelength of 1070nm was used for the ...the laser beam on Inconel625 sheet with 200x25mm 2 area and ...
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Experimental Evidence of Radiation Reaction in the Collision of a High-Intensity Laser Pulse with a Laser-Wakefield Accelerated Electron Beam
... the high intensities required for this necessitates the use of laser pulses of femtosecond duration, and so synchronization between the electron bunch and the colliding laser pulse must also be ...
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USE OF LASER IN TREATMENT OF PREMALIGNANT SKIN CONDITIONS
... • Surgical treatment: is done either by conven- tional surgery or through laser equipment. In dermatology, cutaneous neoplasms can be classified into benign, (Tsuchimoto, 2015) prema- lignant, or malignant. This ...
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Spreading of Four-Petal Lorentz-Gauss Beams Propagating through Atmospheric Turbulence
... FPLG beam, the cross lines of an FPLG beam propagating through atmospheric turbulence and free space for the different C n 2 are illustrated in Figure ...FPLG beam propagating through stronger ...
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