Dynamics of a Q-switched bismuth-doped fibre laser: simulation and comparison with experiment

2021 ◽  
Vol 51 (4) ◽  
pp. 299-305
Author(s):  
D E Artemov ◽  
Oleg Evgen'evich Nanii ◽  
A P Smirnov ◽  
A I Fedoseev
Keyword(s):  
Fibre Laser ◽  
Comparison With Experiment ◽  
Laser Simulation

Erratum: Saturable absorber modelocked polarisation maintaining erbium-doped fibre laser

1993 ◽  
Vol 29 (9) ◽  
pp. 825
Author(s):  
E.A. de Souza ◽  
M.N. Islam ◽  
C.E. Soccolich ◽  
W. Pleibel ◽  
R.H. Stolen ◽  
...  
Keyword(s):  
Saturable Absorber ◽  
Fibre Laser ◽  
Erbium Doped

scholarly journals Optical soliton molecular complexes in a passively mode-locked fibre laser

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Z. Q. Wang ◽  
K. Nithyanandan ◽  
A. Coillet ◽  
P. Tchofo-Dinda ◽  
Ph. Grelu
Keyword(s):  
Molecular Complexes ◽  
Optical Soliton ◽  
Fibre Laser

scholarly journals Analysis and optimization of laser drilling process during machining of AISI 303 material using grey relational analysis approach

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
V. Chengal Reddy ◽  
Thota Keerthi ◽  
T. Nishkala ◽  
G. Maruthi Prasad Yadav
Keyword(s):  
Surface Roughness ◽  
Process Parameters ◽  
Grey Relational Analysis ◽  
Pulse Frequency ◽  
Laser Drilling ◽  
Simultaneous Optimization ◽  
Fibre Laser ◽  
Drilling Process ◽  
Relational Analysis ◽  
Grey Relational

AbstractSurface roughness and heat-affected zone (HAZ) are the important features which influence the performance of the laser-drilled products. Understanding the influence of laser process parameters on these responses and identifying the cutting conditions for simultaneous optimization of these responses are a primary requirement in order to improve the laser drilling performance. Nevertheless, no such contribution has been made in the literature during laser drilling of AISI 303 material. The aim of the present work is to optimize the surface roughness (Ra) and HAZ in fibre laser drilling of AISI 303 material using Taguchi-based grey relational analysis (GRA). From the GRA methodology, the recommended optimum combination of process parameters is flushing pressure at 30 Pa, laser power at 2000 W and pulse frequency at 1500 Hz for simultaneous optimization of Ra and HAZ, respectively. From analysis of variance, the pulse frequency is identified as the most influenced process parameters on laser drilling process performance.

SPALLATION YIELDS FROM HIGH ENERGY PROTON BOMBARDMENT OF HEAVY ELEMENTS

1957 ◽  
Vol 35 (1) ◽  
pp. 21-37 ◽  
Author(s):  
J. D. Jackson
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Heavy Elements ◽  
Collective Effects ◽  
Comparison With Experiment ◽  
Energy Proton ◽  
Stringent Test ◽  
Neutron Evaporation ◽  
Nuclear Processes ◽  
Mev Protons

The Monte Carlo calculations of McManus and Sharp (unpublished) for the prompt nuclear processes occurring upon bombardment of heavy elements by 400 Mev. protons are combined with a description of the subsequent neutron evaporation to determine spallation cross sections for comparison with experiment. The model employed is a schematic one which suppresses the detailed characteristics of individual nuclei, but gives the over-all behavior to be expected. Many-particle and collective effects such as alpha particle emission and fission are ignored. The computed cross sections are presented in a variety of different graphical forms which illustrate quantitatively the qualitative picture of high energy reactions first given by Serber (1947). The calculations are in general agreement with existing data when fission is not an important effect, but the agreement does not imply a very stringent test of the various features of the model.

Perte de puissance en fonction du diamètre de la fibre laser, des paramètres et de l’interface

2019 ◽  
Vol 29 (13) ◽  
pp. 680-681
Author(s):  
F. Panthier ◽  
S. Doizi ◽  
L. Berthe ◽  
O. Traxer
Keyword(s):  
Fibre Laser
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