Shock Wave Generation by Ultraviolet Nanosecond Laser Pulses at Reduced Pressure

2017 ◽  
Author(s):  
Christopher M. Limbach ◽  
Ciprian Dumitrache ◽  
Azer P. Yalin
Keyword(s):  
Shock Wave ◽  
Laser Pulses ◽  
Wave Generation ◽  
Nanosecond Laser ◽  
Reduced Pressure ◽  
Shock Wave Generation ◽  
Nanosecond Laser Pulses

Shock wave generation by ultra-short laser pulses

1996 ◽  
Author(s):  
N. E. Andreev ◽  
V. E. Fortov ◽  
V. V. Kostin
Keyword(s):  
Shock Wave ◽  
Laser Pulses ◽  
Wave Generation ◽  
Shock Wave Generation ◽  
Short Laser Pulses

scholarly journals Optical smoothing for shock-wave generation: Application to the measurement of equations of state

1996 ◽  
Vol 14 (2) ◽  
pp. 211-223 ◽  
Author(s):  
Dimitri Batani ◽  
Simone Bossi ◽  
Alessandra Benuzzi ◽  
Michel Koenig ◽  
Bernard Faral ◽  
...  
Keyword(s):  
Shock Wave ◽  
Equations Of State ◽  
Random Phase ◽  
Laser Pulses ◽  
Wave Generation ◽  
Laser Beams ◽  
Solid Samples ◽  
Shock Wave Generation ◽  
Phase Plates ◽  
Shock Fronts

Experimental results are presented on shock-wave generation in solid samples, irradiated directly by optically smoothed laser beams. Random phase plates and phased zone plates have been successfully used. In particular, the last technique allowed the production of uniform shock fronts that have been used for equation of state experiments at pressures above 10 Mbar. Pressures higher than 35 Mbar were achieved in gold, by using laser pulses with energy E ≈ 100 J, and structured, two-step, two-material targets.

Formation of Periodical Sub-Micron Sized Structures on Silicon by Interfered Nanosecond Laser Pulses

2010 ◽  
Vol 97-101 ◽  
pp. 3803-3806
Author(s):  
Yong Xiang Hu ◽  
Heng Zhang ◽  
Zheng Qiang Yao
Keyword(s):  
Cost Effective ◽  
Laser Pulses ◽  
Laser Beams ◽  
Nanosecond Laser ◽  
Effective Technique ◽  
First Order ◽  
Direct Fabrication ◽  
Cost Effective Technique ◽  
Nanosecond Laser Pulses ◽  
Micro Structuring

Laser interference micro-structuring is a relatively efficient and cost-effective technique for fabricating periodical micro-nano-structuring surfaces. The direct fabrication of sub-micron sized dot array on silicon was performed by four interfering nanosecond laser beams with a diffractive beam splitter. The mechanism to form the dot array was analyzed and it was found that the obtained conical dot array had a negative shape of the interference pattern of four laser beams. A second-order peak between two first-order peaks also occurred due to the liquid-solid expansion.

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