High-energy broadband Nd: Glass regenerative amplifier with coated birefringent filter for the high-power laser facilities

2021 ◽  
pp. 127874
Author(s):  
Jiangtao Guo ◽  
Jiangfeng Wang ◽  
Xiaoqin Wang ◽  
xiaochao Wang ◽  
Wei Fan ◽  
...  
Author(s):  
John Pasley ◽  
Georgia Andrianaki ◽  
Andreas Baroutsos ◽  
Dimitri Batani ◽  
Emmanouil P. Benis ◽  
...  

The second and final year of the Erasmus Plus programme ‘Innovative Education and Training in high power laser plasmas’, otherwise known as PowerLaPs, is described. The PowerLaPs programme employs an innovative paradigm in that it is a multi-centre programme, where teaching takes place in five separate institutes with a range of different aims and styles of delivery. The ‘in-class’ time is limited to 4 weeks a year, and the programme spans 2 years. PowerLaPs aims to train students from across Europe in theoretical, applied and laboratory skills relevant to the pursuit of research in laser plasma interaction physics and inertial confinement fusion. Lectures are intermingled with laboratory sessions and continuous assessment activities. The programme, which is led by workers from the Hellenic Mediterranean University and supported by co-workers from the Queen’s University Belfast, the University of Bordeaux, the Czech Technical University in Prague, Ecole Polytechnique, the University of Ioannina, the University of Salamanca and the University of York, has just finished its second and final year. Six Learning Teaching Training activities have been held at the Queen’s University Belfast, the University of Bordeaux, the Czech Technical University, the University of Salamanca and the Institute of Plasma Physics and Lasers of the Hellenic Mediterranean University. The last of these institutes hosted two 2-week-long Intensive Programmes, while the activities at the other four universities were each 5 days in length. In addition, a ‘Multiplier Event’ was held at the University of Ioannina, which will be briefly described. In this second year, the work has concentrated on training in both experimental diagnostics and simulation techniques appropriate to the study of plasma physics, high power laser matter interactions and high energy density physics. The nature of the programme will be described in detail, and some metrics relating to the activities carried out will be presented. In particular, this paper will focus on the overall assessment of the programme.


2008 ◽  
Vol 4 (S251) ◽  
pp. 473-474
Author(s):  
Svatopluk Civiš ◽  
Libor Juha

AbstractLarge laser sparks created by a single shot of a high-power laser system were used for the laboratory simulation of the chemical consequences of high-energy-density events (lightning, high-velocity impact) in planetary atmospheres, e.g., the early Earth's atmosphere.


2013 ◽  
Vol 52 (12) ◽  
pp. 2546 ◽  
Author(s):  
Avnish Kumar Sharma ◽  
Rajesh Kumar Patidar ◽  
Deepak Daiya ◽  
Anandverdhan Joshi ◽  
Prasad Anant Naik ◽  
...  

2016 ◽  
Vol 852 ◽  
pp. 336-341
Author(s):  
Lei Zhang ◽  
Bi Bo Shao ◽  
Yong Wu ◽  
Peng Ling Yang ◽  
Meng Meng Tao ◽  
...  

With the consistent improvement of the laser power and energy, further enhancement of the laser resistant ability of the target board is becoming a more and more crucial task in high energy laser diagnostics and irradiation effect studies. Applications of ceramic materials in high energy laser damage were studied. An aluminum panel was coated with ZrO2 ceramic for high power laser proof. Reflectivity and diffuse reflection characteristics of the coating were investigated at different wavelengths. Numerical simulation was conducted to analyze the thermal response of the coating under high power laser radiation. And, related experiments were carried out with high power fiber lasers. Irradiation experiments indicate that the ceramic layer helps to delay the heat conduction and reduce the peak temperature of the target board.


1986 ◽  
Vol 4 (3-4) ◽  
pp. 453-460 ◽  
Author(s):  
H. Schönnagel ◽  
H. Gunkel ◽  
J. Grzanna

The coherence of the laser radiation limits the average beam fluence in high power laser installations. The disadvantages of present optical schemes are analysed. A new optical scheme with controlled spatial coherence is described and its consequences are shown.


2013 ◽  
Vol 765-767 ◽  
pp. 2288-2293
Author(s):  
Bao Xu Wang ◽  
Mei Cong Wang ◽  
Ming Zhi Zhu ◽  
Xiao Juan Chen ◽  
Wen Kai Wu

High Power Laser System (HPLS) is a large optical instrument, provides extremely high temperature and pressure conditions for inertial confinement fusion (ICF) and high-energy-physics research. It contains large number of optics and which would be easily damaged due to high fluence of laser power. The contamination control of optical surfaces has a great significance to ensure the performance of the system and decrease costs. This paper discussed the background and development of cleanliness control techniques in high power laser systems, including contamination induced laser damage (CILD), contamination inspection, optical surface cleanliness degradation and maintaining.


2020 ◽  
Vol 41 (4) ◽  
pp. 645-650
Author(s):  
LI Gaoping ◽  
◽  
CHEN Chao ◽  
LI Dong ◽  
WU Lei ◽  
...  

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