scholarly journals Compact short-pulse laser for near-field range-gated imaging

1997 ◽  
Author(s):  
Fred J. Zutavern ◽  
Wesley D. Helgeson ◽  
Guillermo M. Loubriel ◽  
George J. Yates ◽  
Robert A. Gallegos ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
Near Field ◽  
Field Range ◽  
Short Pulse Laser ◽  
Gated Imaging

scholarly journals Output temporal contrast simulation of a large aperture high power short pulse laser system

2014 ◽  
Vol 2 ◽  
Author(s):  
Ping Zhu ◽  
Xinglong Xie ◽  
Xiaoping Ouyang ◽  
Jianqiang Zhu
Keyword(s):  
Pulse Laser ◽  
High Power ◽  
Short Pulse ◽  
Near Field ◽  
Laser System ◽  
Intensity Modulation ◽  
Temporal Contrast ◽  
Large Aperture ◽  
Short Pulse Laser ◽  
Field Quality

Abstract The work presented in this paper is a study of output temporal contrast degradation by near-field quality deterioration, such as intensity modulation and wavefront deviation, in a large aperture high power short pulse laser system. A two-step focusing algorithm with a coordinate transform based on the Fresnel approximation in the space domain is used for simulating the output focused by an off-axis parabolic mirror. The temporal contrast degradation by intensity modulation and wavefront deviation is analyzed and the influence of the diameter on the temporal contrast degradation is revealed. The simulation and assumption results based on the parameters of the Shen Guang-II laser system are compared with the online experimental temporal contrast data. The near-field quality deterioration might lead to temporal contrast degradation, hindering higher temporal contrast in large aperture high power short pulse laser systems.

Short-Pulse Laser Near-Field Ablation of Solid Targets under Liquids

2018 ◽  
pp. 193-206
Author(s):  
M. Ulmeanu ◽  
P. Petkov ◽  
F. Jipa ◽  
E. Brousseau ◽  
M. N. R. Ashfold
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
Near Field ◽  
Short Pulse Laser

Silicon Thinning using Ultra-Short Pulse Laser Ablation

2004 ◽  
Author(s):  
F. Beaudoin ◽  
P. Perdu ◽  
C. DeNardi ◽  
R. Desplats ◽  
J. Lopez ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Sample Preparation ◽  
Pulse Laser ◽  
Pulse Laser Ablation ◽  
Short Pulse ◽  
Special Care ◽  
Short Pulse Laser ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser

Abstract Ultra-short pulse laser ablation is applied to IC backside sample preparation. It is contact-less, non-thermal, precise and can ablate the various types of material present in IC packages. This study concerns the optimization of ultra-short pulse laser ablation for silicon thinning. Uncontrolled silicon roughness and poor uniformity of the laser thinned cavity needed to be tackled. Special care is taken to minimize the silicon RMS roughness to less than 1µm. Application to sample preparation of 256Mbit devices is presented.

Chromium oxide dissolution in steels via short pulse laser processing

2013 ◽  
Vol 115 (4) ◽  
pp. 1469-1477 ◽  
Author(s):  
Evgeny Kharanzhevskiy ◽  
Sergey Reshetnikov
Keyword(s):  
Pulse Laser ◽  
Chromium Oxide ◽  
Laser Processing ◽  
Short Pulse ◽  
Oxide Dissolution ◽  
Short Pulse Laser

The study of time dependent, broadband X-ray emission from ultra-short pulse laser produced plasmas

1994 ◽  
Author(s):  
Ronnie Shepherd ◽  
Rex Booth ◽  
Dwight Price ◽  
Rosemary Walling ◽  
Richard More ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
Time Dependent ◽  
X Ray ◽  
Short Pulse Laser ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser

Morphological evaluation of dentin and Y-TZP after short-pulse laser application

2014 ◽  
Vol 30 ◽  
pp. e137
Author(s):  
A. Bona Matos ◽  
P.F. Cesar ◽  
L.T. Trevelin ◽  
B.T.F. Silva ◽  
C.S. Azevedo ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
Laser Application ◽  
Short Pulse Laser ◽  
Morphological Evaluation
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