Setup for cw laser average power and pulse laser energy measurements and laser average power and laser pulse energy detectors calibration

2006 ◽  
Author(s):  
Elena Kruplevich ◽  
Lilia Nasennik ◽  
Vladimir Chernikov
Keyword(s):  
Laser Pulse ◽  
Pulse Laser ◽  
Pulse Energy ◽  
Laser Pulse Energy ◽  
Laser Energy ◽  
Average Power ◽  
Cw Laser ◽  
Pulse Laser Energy ◽  
Energy Detectors

Providing thin-disk technology for high laser pulse energy at high average power

2011 ◽  
Author(s):  
Johannes Tümmler ◽  
Robert Jung ◽  
Thomas Nubbemeyer ◽  
Ingo Will ◽  
Wolfgang Sandner
Keyword(s):  
Laser Pulse ◽  
Pulse Energy ◽  
Laser Pulse Energy ◽  
Average Power ◽  
Thin Disk ◽  
High Average Power ◽  
High Laser

Fabrication and Characterization of Micro-Dent Produced by Laser Shock Peening on Zr-Based Bulk Metallic Glass

2016 ◽  
Vol 849 ◽  
pp. 14-21
Author(s):  
Yun Hu Zhu ◽  
Jie Fu ◽  
Chao Zheng ◽  
Zhong Ji
Keyword(s):  
Plastic Deformation ◽  
Laser Pulse ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Pulse Energy ◽  
Laser Pulse Energy ◽  
Laser Energy ◽  
Laser Shock Peening ◽  
Laser Shock ◽  
Shock Peening

A Zr41.2Ti13.8Cu12.5Ni10Be22.5 (vit1) bulk metallic glass was processed by Nd: Glass laser pulses with duration 30ns and energy in the range 20 to 30J. The surface morphology and surface micro-hardness of the vit1 metallic glass, treated with varying laser energy, had been studied in detail. Laser shock peening induced plastic deformation and caused a micro-dent to be generated on the vit1 surface. The optical profiling tests showed that laser pulse energy greatly influenced the diameter and depth of the micro-dents. The surface roughness which was caused by various laser pulse energy was assessed and characterized. The three-dimensional surface topography of the laser treated region on vit1 surfaces had been characterized. In addition the plastic deformation features were also studied.

scholarly journals Effect of Laser Energy and Repetition Rate on Holmium Plasma Emission

2020 ◽  
Vol 18 (44) ◽  
pp. 98-108
Author(s):  
Nipras Nazeh Mahmoad ◽  
Mahmoad Shakir Mahmoad
Keyword(s):  
Laser Pulse ◽  
Pulse Energy ◽  
Repetition Rate ◽  
Laser Pulse Energy ◽  
Laser Energy ◽  
Emission Spectra ◽  
Maximum Intensity ◽  
Plasma Emission ◽  
Line Intensities ◽  
Pulse Energies

The holmium plasma induced by a 1064-nmQ-switched Nd:YAG laser in air was investigated. This work was done theoretically and experimentally.  Cowan code was used to get the emission spectra for different transition of the holmium target. In the experimental work, the evolution of the plasma was studied by acquiring spectral images at different laser pulse energies (600,650,700, 750, and 800 mJ). The repetition rates of (1Hz and 10Hz) in the UV region (200-400 nm). The results indicate that, the emission line intensities increase with increasing of the laser pulse energy and repetition rate. The strongest emission spectra appeared when the laser pulse energy is 800mJ and 10 Hz repetition rate at λ= 345.64nm, with the maximum intensity of 77000 counts.

scholarly journals Reutilization of nanosecond pulse laser energy and its performance in single particle triggered LIBS

RSC Advances ◽  
2018 ◽  
Vol 8 (73) ◽  
pp. 41915-41919
Author(s):  
Pingwei Zhou ◽  
Yu Zhu ◽  
Shengfu Li ◽  
Li-guo Zhu
Keyword(s):  
Laser Beam ◽  
Pulse Laser ◽  
Single Particle ◽  
Pulse Energy ◽  
Laser Energy ◽  
Nanosecond Pulse ◽  
Pulse Laser Beam ◽  
Pulse Laser Energy ◽  
Nanosecond Pulse Laser

A method that can reutilize the energy of a nanosecond pulse laser beam in LIBS was studied. When the pulse energy is not sufficient to generate the plasma, the overlapped point in this method can reach the threshold.

scholarly journals INFLUENCE OF LASER ENERGY ON CDS NANO PARTIALS PREPARED BY LASER INDUCED PLASMA

2021 ◽  
Vol 03 (03) ◽  
pp. 69-76
Author(s):  
Hayim Ch, MAGID ◽  
Intesar Hato HASHIM ◽  
Kadhim A. AADIM
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Laser Pulse ◽  
Pulse Energy ◽  
Laser Pulse Energy ◽  
Laser Energy ◽  
Plasma Deposition ◽  
Hexagonal Structure ◽  
Structural Morphology ◽  
Laser Induced Plasma

In this work ,cadmium sulfide (CdS) thin films deposited on glass substrates using Nd-YAG laser wavelength (1064 nm) laser-induced plasma deposition technique (PLD). The structural, morphology and optical properties of these films have been described as a change in the effect of laser pulse energy ( ). The X-ray diffraction results show that s all samples were polycrystalline hexagonal structure and the crystalline size ghange with increasing of the laser energy. The optical properties results show that the transmittance of all deposited thin films decreases with increasing of laser pulse energy .As a result of the microscopic examination of the surface, it was found that the surface is uniform and the granular size increases with the increase of the laser power.

scholarly journals Dependence of laser accelerated protons on laser energy following the interaction of defocused, intense laser pulses with ultra-thin targets

2011 ◽  
Vol 29 (3) ◽  
pp. 345-351 ◽  
Author(s):  
C.M. Brenner ◽  
J.S. Green ◽  
A.P.L. Robinson ◽  
D.C. Carroll ◽  
B. Dromey ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Focal Spot ◽  
Laser Pulse Energy ◽  
Laser Energy ◽  
Spot Size ◽  
Proton Flux ◽  
Focal Spot Size ◽  
Order Of Magnitude ◽  
Laser Focal Spot ◽  
Accelerated Protons

AbstractThe scaling of the flux and maximum energy of laser-driven sheath-accelerated protons has been investigated as a function of laser pulse energy in the range of 15–380 mJ at intensities of 1016–1018 W/cm2. The pulse duration and target thickness were fixed at 40 fs and 25 nm, respectively, while the laser focal spot size and drive energy were varied. Our results indicate that while the maximum proton energy is dependent on the laser energy and laser spot diameter, the proton flux is primarily related to the laser pulse energy under the conditions studied here. Our measurements show that increasing the laser energy by an order of magnitude results in a more than 500-fold increase in the observed proton flux. Whereas, an order of magnitude increase in the laser intensity generated by decreasing the laser focal spot size, at constant laser energy, gives rise to less than a tenfold increase in observed proton flux.

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