High-performance OPCPA laser system

2006 ◽  
Vol 133 ◽  
pp. 701-703
Author(s):  
J. D. Zuegel ◽  
V. Bagnoud ◽  
J. Bromage ◽  
I. A. Begishev ◽  
J. Puth

2013 ◽  
Vol 21 (2) ◽  
pp. 336-341 ◽  
Author(s):  
王恒坤 WANG Heng-kun ◽  
张国玉 ZHANG Guo-yu ◽  
郭立红 GUO Li-hong ◽  
刘廷霞 LIU Ting-xia ◽  
王兵 WANG Bing ◽  
...  


2015 ◽  
Vol 801 ◽  
pp. 303-311
Author(s):  
Florin Breaban ◽  
Roger Debuchy ◽  
Didier Defer

The applications of high performance materials in the aerospace and in the automotive technology in the next years need to develop new vibration study, nondestructive testing, predictive maintenance and industrial control methods.The Laser Scanning Vibrometry and Holographic Interferometry methods of vibration study and nondestructive testing by modal analysis are described. The Laser Scanning Vibrometer PSV 400 is made by Polytec GmbH and the PSV software reconstructs the 3D model of the measured micro-deformation of the object. The holographic laser system HLS-3 from Lumonics Inc. has 100 MW ruby laser peak power and 30 ns pulse width.Using mechanical excitation to induce a measurable vibration, the Laser Scanning Vibrometry and Holographic Interferometry modal analysis measurements show up the vibrational signatures and the damaged areas of the objects made by high performance materials - polymers, composites.



1993 ◽  
Vol 11 (2) ◽  
pp. 331-346 ◽  
Author(s):  
M.J. Shaw ◽  
B. Edwards ◽  
G.J. Hirst ◽  
C.J. Hooker ◽  
M.H. Key ◽  
...  

This article describes the current status of the KrF development programme based on the Sprite laser system at the Rutherford Appleton Laboratory. High reliability and high shot rate have been demonstrated. Using a unique KrF-pumped Raman laser architecture, beam brightness exceeding 2×1019 Wcm-2 sterad-1 giving a focussed intensity >5 ×1017 Wcm-2 has been achieved. The development of transform-limited short-pulse oscillators is shown to be of importance in avoiding spectral broadening in air propagation of high-intensity beams. Beam smoothing of KrF beams in a multiplexed configuration has been demonstrated for the first time. The technique of echelon-free induced spatial incoherence has been shown to produce smooth intensity distributions in the far field, which remain essentially unchanged on amplification. The development of pulsed-power systems capable of exciting multikilojoule laser amplifiers for the next phase of development, the Supersprite system, is briefly discussed.



1997 ◽  
Author(s):  
Debora E. Mosley ◽  
Charles L. Matson ◽  
Stanley R. Czyzak


2014 ◽  
Vol 12 (4) ◽  
pp. 041402-41406 ◽  
Author(s):  
Yujie Peng Yujie Peng ◽  
Jiangfeng Wang Jiangfeng Wang ◽  
Zhixiang Zhang Zhixiang Zhang ◽  
Dajie huang Dajie huang ◽  
Wei Fan Wei Fan ◽  
...  


Author(s):  
J. D. Zuegel ◽  
V. Bagnoud ◽  
J. Bromage ◽  
I. A. Begishev ◽  
J. Puth


Author(s):  
V. Sood ◽  
A. Feinerman

Vacuum insulation is an advanced thermal insulation technology that significantly outperforms conventional materials, such as foam or fiber. The study of this new technology is the first step towards making improvements in the applications of insulation panels to provide energy-efficient and cost saving solutions. The focus this summer has been on creating prototypes using acrylic and Kevlar thread to further improve the quality of insulation panels and make them more efficient. Using a carbon dioxide laser system, acrylic was cut and small prototypes were produced. The insulation panel was sealed in a plastic bag and a small vacuum pump was used to evacuate the air. The results gathered during the research program indicate that Kevlar thread is strong and can provide support without breaking, making the insulation panel effective. Stronger conclusions will arise after further testing and research in this area.



2000 ◽  
Vol 18 (1) ◽  
pp. 145-150 ◽  
Author(s):  
M. GALIMBERTI ◽  
L.A. GIZZI ◽  
A. BARBINI ◽  
P. CHESSA ◽  
A. GIULIETTI ◽  
...  

A high performance, fully controlled picosecond laser system has been designed and built with the aid of a numerical code capable of simulating the temporal behavior of the laser system, including each active and passive component. The laser performance was characterized with an optical streak camera, equivalent plane monitor, and calorimeter measurements. The laser pulse was focused on 150-nm thick foils to investigate plasma formation and the related transmittivity of the laser light. The experimental data are in very good agreement with the predictions of a simple, 2D analytical model that takes into account the actual shot-to-shot features of the laser pulse. The temporal profile of the pulse and the intensity distribution in the focal spot were found to play a key role in determining the transmission properties of the laser-irradiated foil. This work may be relevant to a wide class of laser exploded foil plasma experiments.



2020 ◽  
Vol 8 ◽  
Author(s):  
Zhiguo Lv ◽  
Zhi Yang ◽  
Qianglong Li ◽  
Feng Li ◽  
Yishan Wang ◽  
...  

Abstract In this paper, we innovatively conduct a Porro prism-based beam pointing stability promotion technique research and realize a high-performance rod-type photonic crystal fiber-based chirped pulse amplification (CPA) system, mainly including a frequency-reduced all-fiber pre-amplification stage, photonic crystal rod-based main amplification stage, and 1600 lines/mm transmission grating-pair compressor. Laser output with average power of 50 W, repetition rates of 500 kHz, pulse energy of 100 μJ, pulse duration of 830 fs, beam quality of M2<1.3, power fluctuation of 0.55% root mean square, and beam pointing drift of 19 μrad/°C over 8 h is realized. The high-performance laser system has an enormous application potential in fundamental research and precision manufacturing fields.



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