Fractal structure of eigenmodes of unstable-cavity lasers

1998 ◽  
Vol 23 (24) ◽  
pp. 1909 ◽  
Author(s):  
G. P. Karman ◽  
J. P. Woerdman
Keyword(s):  
Fractal Structure ◽  
Unstable Cavity ◽  
Cavity Lasers

Tolerant low-loss three-lens coupling system for 1.48-μm unstable-cavity lasers

2000 ◽  
Vol 12 (3) ◽  
pp. 254-256 ◽  
Author(s):  
S. Delepine ◽  
E. Boubal ◽  
E. Gerard ◽  
T. Fillion ◽  
P. Salet
Keyword(s):  
Low Loss ◽  
Coupling System ◽  
Unstable Cavity ◽  
Lens Coupling ◽  
Cavity Lasers

Polygon Modes Of Unstable-cavity Lasers

2005 ◽  
Author(s):  
M.A. van Eijkelenborg ◽  
G.S. McDonald ◽  
G.P. Karman ◽  
J.P. Woerdman ◽  
G.H.C. New
Keyword(s):  
Unstable Cavity ◽  
Cavity Lasers

Tolerant low-loss three-lens coupling system for 1.48-μm unstable-cavity lasers

2000 ◽  
Author(s):  
Francois Boubal ◽  
Sylvie Delepine ◽  
Paul Salet ◽  
Franck Gerard ◽  
David Cornec ◽  
...  
Keyword(s):  
Low Loss ◽  
Coupling System ◽  
Unstable Cavity ◽  
Lens Coupling ◽  
Cavity Lasers

Single transverse-mode filtering utilizing ion implantation: application to 1.48-μm unstable-cavity lasers

2000 ◽  
Vol 12 (11) ◽  
pp. 1447-1449 ◽  
Author(s):  
F. Gerard ◽  
S. Delepine ◽  
H. Bissessur ◽  
D. Locatelli ◽  
T. Fillion ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Transverse Mode ◽  
Unstable Cavity ◽  
Cavity Lasers

Rapid determination of fractal structure of bacterial assemblages in wastewater treatment: implications to process optimisation

1998 ◽  
Vol 38 (2) ◽  
pp. 9-15 ◽  
Author(s):  
J. Guan ◽  
T. D. Waite ◽  
R. Amal ◽  
H. Bustamante ◽  
R. Wukasch
Keyword(s):  
Wastewater Treatment ◽  
Fractal Structure ◽  
Structural Information ◽  
Rapid Determination ◽  
Fractal Dimensions ◽  
Structure Information ◽  
Treatment Processes ◽  
On Line ◽  
Bacterial Aggregates

A rapid method of determining the structure of aggregated particles using small angle laser light scattering is applied here to assemblages of bacteria from wastewater treatment systems. The structure information so obtained is suggestive of fractal behaviour as found by other methods. Strong dependencies are shown to exist between the fractal structure of the bacterial aggregates and the behaviour of the biosolids in zone settling and dewatering by both pressure filtration and centrifugation methods. More rapid settling and significantly higher solids contents are achievable for “looser” flocs characterised by lower fractal dimensions. The rapidity of determination of structural information and the strong dependencies of the effectiveness of a number of wastewater treatment processes on aggregate structure suggests that this method may be particularly useful as an on-line control tool.

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