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High power diode lasers went a long way from the 10 W or 20 W model of the early 90s to the 100 W, 150 W or even 200 W types of today. This was possible by improving both the efficiency of the semiconductor material by about 1/3 to 70% and the heat removal capability of the heat sinks used. We arrived at diode lasers which need 150 A or more and require a more and more refined cooling setup, especially...
Recent advances in efficiency and mounting technology have lead to new sets of parameters for commercially available high power diode lasers (HDL). Still, these advances have to be proven by extensive long-term aging tests (LAT). The results of these give both the safety margin for operating todays HDL as well as hints towards further improvement. By statistical means clear information on reliability...
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