Flat-top beam profile generated using a fiber-bundle prism-coupled beam shaper

2011 ◽  
Vol 284 (12) ◽  
pp. 2817-2824 ◽  
Author(s):  
A. Haghighatzadeh ◽  
H. Golnabi
Keyword(s):  
Fiber Bundle ◽  
Beam Profile ◽  
Flat Top Beam

A Nd: YAG laser with a flat-top beam profile and constant divergence

1997 ◽  
Vol 29 (2) ◽  
pp. 57-61 ◽  
Author(s):  
W.C. Yen ◽  
C.T. Huang ◽  
H.P. Liu ◽  
L.P. Lee
Keyword(s):  
Beam Profile ◽  
Yag Laser ◽  
Flat Top Beam

scholarly journals Experimental generation of a flat-top beam profile in a stable ring cavity

2019 ◽  
Vol 44 (17) ◽  
pp. 4428
Author(s):  
A. López-Vázquez ◽  
Y. M. Torres ◽  
M. S. Billión ◽  
W. M. Pimenta ◽  
J. A. Franco-Villafañe ◽  
...  
Keyword(s):  
Ring Cavity ◽  
Beam Profile ◽  
Flat Top Beam ◽  
Stable Ring

scholarly journals Improving Consistency of Photobiomodulation Therapy: A Novel Flat-Top Beam Hand-Piece versus Standard Gaussian Probes on Mitochondrial Activity

2021 ◽  
Vol 22 (15) ◽  
pp. 7788
Author(s):  
Andrea Amaroli ◽  
Praveen Arany ◽  
Claudio Pasquale ◽  
Stefano Benedicenti ◽  
Alessandro Bosco ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Molecular Mechanisms ◽  
Therapeutic Potential ◽  
Atp Synthesis ◽  
Beam Profile ◽  
Photobiomodulation Therapy ◽  
Mitochondrial Activity ◽  
Hand Piece ◽  
Fibre Probe ◽  
Flat Top Beam

The tremendous therapeutic potential of photobiomodulation therapy in different branches of medicine has been described in the literature. One of the molecular mechanisms for this treatment implicates the mitochondrial enzyme, cytochrome C oxidase. However, the efficacy and consistency of clinical outcomes with photobiomodulation treatments has been fiercely debated. This work was motivated by this need to improve photobiomodulation devices and delivery approaches. We designed a novel hand-piece with a flat-top beam profile of irradiation. We compared the beam profile versus a standard hand-piece and a fibre probe. We utilized isolated mitochondria and performed treatments at various spots within the beam, namely, the centre, left and right edge. We examined mitochondrial activity by assessing ATP synthesis with the luciferin/luciferase chemiluminescent method as a primary endpoint, while mitochondrial damage was assessed as the secondary endpoint. We observed a uniform distribution of the power density with the flat-top prototype compared to a wide Gaussian beam profile with the standard fibre and standard hand-piece. We noted increased production of ATP in the centre of all three beams with respect to the non-treated controls (p < 0.05). Both the fibre and standard hand-piece demonstrated less increase in ATP synthesis at the edges than the centre (p < 0.05). In contrast, ATP synthesis was increased homogenously in the flat-top handpiece, both in the centre and the edges of the beam. Fibre, standard hand-piece and the flat-top hand-piece prototype have discrete beam distribution characteristics. This significantly affected the mitochondrial activity with respect to their position within the treated areas. Flat-top hand-piece enhances the uniformity of photobiomodulation treatments and can improve the rigour and reproducibility of PBM clinical outcomes.

Flat top beam profile cavity prototype

2005 ◽  
Author(s):  
J. Agresti ◽  
E. D'Ambrosio ◽  
R. DeSalvo ◽  
J. Mackowski ◽  
A. Remillieux ◽  
...  
Keyword(s):  
Beam Profile ◽  
Flat Top Beam

Effect of Shape of Fiber Bundle on Damage Development of Woven Fabric Composities

2006 ◽  
Vol 55 (2) ◽  
pp. 224-229 ◽  
Author(s):  
Takao OTA ◽  
Hikaru YOSHIZUMI ◽  
Hirokazu TSUCHIHASHI ◽  
Takashi MATSUOKA ◽  
Kazuhiko SAKAGUCHI
Keyword(s):  
Fiber Bundle ◽  
Woven Fabric ◽  
Damage Development

Formation of Fiber-bundle/Matrix Interlayer in Carbon/Carbon Composites

2011 ◽  
Vol 26 (12) ◽  
pp. 1309-1313 ◽  
Author(s):  
Jie-Hui JING ◽  
Yu-Dong HUANG ◽  
Li LIU ◽  
Zai-Xing JIANG ◽  
Bo JIANG
Keyword(s):  
Fiber Bundle ◽  
Carbon Composites

Geocartographic thinking in modern science

2020 ◽  
Vol 961 (7) ◽  
pp. 27-36
Author(s):  
A.K. Cherkashin
Keyword(s):  
Differential Geometry ◽  
Fiber Bundle ◽  
Modern Science ◽  
The State ◽  
Theory Of Knowledge ◽  
Knowledge Map ◽  
Knowledge Based ◽  
Geographical Environment ◽  
New Knowledge ◽  
Thematic Layer

The purpose of the study is to show how the features of geocartographic way of thinking are manifested in the meta-theory of knowledge based on mathematical formalisms. General cartographic concepts and regularities are considered in the view of metatheoretic analysis using cognitive procedures of fiber bundle from differential geometry. On levels of metainformation generalization, the geocartographic metatheoretic approach to the study of reality is higher than the system-theoretical one. It regulates the type of equations, models, and methods of each intertheory expressed in its own system terms. There is a balance between the state of any system and its geographical environment; therefore the observed phenomena are only explained theoretically in a metatheoretic projection on the corresponding system-thematic layer of the knowledge map. Metatheoretic research enables passing from the systematization of already known patterns to the formation of new knowledge through the scientific stratification of reality. General methods of metatheoretic analysis are mathematically distinguished

Illuminance distribution produced by a fiber bundle

1984 ◽  
Vol 23 (17) ◽  
pp. 2859 ◽  
Author(s):  
Shojiro Nemoto
Keyword(s):  
Fiber Bundle
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