High energy 40 fs compact diode-pumped femtosecond laser for nanostructuring applications

2006 ◽  
Author(s):  
Clemens Hönninger ◽  
Ramatou Bello Doua ◽  
Eric P. Mottay ◽  
François Salin
Author(s):  
Marco Hornung ◽  
Sebastian Keppler ◽  
Alexander Kessler ◽  
Hartmut Liebetrau ◽  
Andreas Seidel ◽  
...  

2013 ◽  
Author(s):  
Yang Yu ◽  
Chee Yuen Cheng ◽  
Yong Poo Chia ◽  
Wee Hoong Wong ◽  
Saw Soon Yong ◽  
...  

2008 ◽  
Vol 16 (6) ◽  
pp. 3674 ◽  
Author(s):  
M. Siebold ◽  
J. Hein ◽  
C. Wandt ◽  
S. Klingebiel ◽  
F. Krausz ◽  
...  
Keyword(s):  

2017 ◽  
Vol 382 ◽  
pp. 201-204 ◽  
Author(s):  
Junchi Chen ◽  
Yujie Peng ◽  
Zongxin Zhang ◽  
Hongpeng Su ◽  
Yuxin Leng ◽  
...  

2012 ◽  
Vol 285 (10-11) ◽  
pp. 2715-2718 ◽  
Author(s):  
Chi Zhang ◽  
Yu-ying Zhang ◽  
Ming-lie Hu ◽  
Si-jia Wang ◽  
You-jian Song ◽  
...  

2018 ◽  
Vol 8 (9) ◽  
pp. 1565 ◽  
Author(s):  
Tadzio Levato ◽  
Stefano Bonora ◽  
Gabriele Grittani ◽  
Carlo Lazzarini ◽  
Muhammad Nawaz ◽  
...  

Laser wake field acceleration (LWFA) is an efficient method to accelerate electron beams to high energy. This is a benefit in research infrastructures where a multidisciplinary environment can benefit from the different secondary sources enabled, having the opportunity to extend the range of applications that is accessible and to develop new ideas for fundamental studies. The ELI Beamline project is oriented to deliver such beams to the scientific community both for applied and fundamental research. The driver laser is a Ti:Sa diode-pumped system , running at a maximum performance of 10 Hz, 30 J, and 30 fs. The possibilities to setup experiments using different focal lengths parabolas, as well as the possibility to counter-propagate a second laser beam intrinsically synchronized, are considered in the electron acceleration program. Here, we review the laser-driven electron acceleration experimental platform under implementation at ELI Beamlines, the HELL (High-energy Electrons by Laser Light) experimental platform .


Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 979
Author(s):  
Xuan He ◽  
Qiming Liu ◽  
Matthieu Lancry ◽  
François Brisset ◽  
Bertrand Poumellec

We report on space-selective crystallization of congruent and polar Sr2TiSi2O8 crystals in a stoichiometric SrO-TiO2-SiO2 glass induced by (1030 nm, 300 fs) femtosecond laser irradiation. This allows us to compare with non-congruent laser-induced crystallization of polar LiNbO3 in non-stoichiometric Li2O-Nb2O5-SiO2 glass and gain information on the mechanism of nanocrystals orientation with the laser polarization that we pointed out previously. Using scanning electron microscopy (SEM), second harmonic generation (SHG), and electron backscattered diffraction (EBSD), we studied the laser-induced crystallization according to the laser processing parameters (pulse energy, pulse repetition rate, scanning speed). We found (1) a domain where the laser track is filled with crystals not perfectly textured (low energy), (2) a domain where an amorphous volume remains surrounded by a crystallized shell (high energy). This arises from Sr out-diffusion and may give rise to the crystallization of both SrTiO3 and Sr2TiSi2O8 phases at low speed. In the one-phase domain (at higher speed), the possibility to elaborate a tube with a perfect Fresnoite texture is found. A significant difference in size and morphology whereas the crystallization threshold remains similar is discussed based on glass thermal properties. Contrarily to Li2O-Nb2O5-SiO2 (LNS) glass, no domain of oriented nanocrystallization controlled by the laser polarization has been found in SrO-TiO2-SiO2 (STS) glass, which is attributed to the larger crystallization speed in STS glass. No nanogratings have also been found that is likely due to the congruency of the glass.


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