scholarly journals Near-field characteristics of broad area diode lasers during catastrophic optical damage failure

2012 ◽  
Author(s):  
Martin Hempel ◽  
Jens W. Tomm ◽  
Martina Baeumler ◽  
Helmer Konstanzer ◽  
Jayanta Mukherjee ◽  
...  
Keyword(s):  
Diode Lasers ◽  
Near Field ◽  
Broad Area ◽  
Optical Damage

Kinetics of Defect Propagation during the Catastrophic Optical Damage (COD) in Broad-Area Diode Lasers

2012 ◽  
Vol 725 ◽  
pp. 105-108 ◽  
Author(s):  
Jens W. Tomm ◽  
Martin Hempel ◽  
Thomas Elsaesser
Keyword(s):  
Laser Power ◽  
Initial Phase ◽  
Diode Lasers ◽  
Well Being ◽  
Broad Area ◽  
Optical Damage ◽  
Defect Pattern ◽  
Kinetics Of ◽  
Direct Inspection ◽  
Propagation Velocities

The initial phase of defect propagation in broad area diode lasers, which are affected by the catastrophic optical damage (COD) effect, is studied. The decay of laser power within the first several 100 ns is found to be determined by defect propagation. When analyzing different device designs, a correlation is found between defect propagation velocities and thermal resistances of the materials vicinal to the quantum well, being the main heat source. The findings are confirmed by direct inspection of the defect pattern in opened devices.

scholarly journals Near-field evolution in strongly pumped broad area diode lasers

2012 ◽  
Author(s):  
Martin Hempel ◽  
Jens W. Tomm ◽  
Martina Bäumler ◽  
Helmer Konstanzer ◽  
Jayanta Mukherjee ◽  
...  
Keyword(s):  
Diode Lasers ◽  
Near Field ◽  
Broad Area ◽  
Field Evolution

Impact of longitudinal refractive index change on the near-field width of high-power broad-area diode lasers

2017 ◽  
Vol 110 (26) ◽  
pp. 263504 ◽  
Author(s):  
S. Rauch ◽  
H. Wenzel ◽  
M. Radziunas ◽  
M. Haas ◽  
G. Tränkle ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Power ◽  
Diode Lasers ◽  
Near Field ◽  
Refractive Index Change ◽  
Broad Area ◽  
Index Change

Catastrophic optical damage at front and rear facets of diode lasers

2010 ◽  
Vol 97 (23) ◽  
pp. 231101 ◽  
Author(s):  
Martin Hempel ◽  
Jens W. Tomm ◽  
Mathias Ziegler ◽  
Thomas Elsaesser ◽  
Nicolas Michel ◽  
...  
Keyword(s):  
Diode Lasers ◽  
Optical Damage

Experimental Investigation of Limits to Slow Axis Beam Quality in High Power Broad Area Diode Lasers

2014 ◽  
Author(s):  
M. Winterfeldt ◽  
P. Crump ◽  
H. Wenzel ◽  
G. Erbert ◽  
G. Trankle
Keyword(s):  
Experimental Investigation ◽  
High Power ◽  
Beam Quality ◽  
Diode Lasers ◽  
Broad Area ◽  
Slow Axis

Enhanced self-aligned structure for improved lateral brightness in 940 nm high-power broad-area diode lasers

2021 ◽  
Author(s):  
Mohamed Elattar ◽  
Olaf Brox ◽  
Pietro Della Casa ◽  
Andre Maaßdorf ◽  
Dominik Martin ◽  
...  
Keyword(s):  
High Power ◽  
Diode Lasers ◽  
Broad Area

High-Power Broad-Area Diode Lasers and Laser Bars

2007 ◽  
pp. 173-223 ◽  
Author(s):  
Götz Erbert ◽  
Arthur Bärwolff ◽  
Jürgen Sebastian ◽  
Jens Tomm
Keyword(s):  
High Power ◽  
Diode Lasers ◽  
Broad Area
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