Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Nicolas Wiedmann"'
Autor:
R. Poprawe, Jürgen Jandeleit, Dieter Hoffmann, Peter Loosen, Ernst Wolfgang Kreutz, Nicolas Wiedmann
Publikováno v:
Journal of Crystal Growth. 210:313-317
Defects and degradation of InGa(Al)As/GaAs DQW diode laser bars mounted on copper micro-channel heat sinks were investigated. The analytical techniques used are optical microscopy and scanning electron microscopy. The high-power diode lasers were inv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25ba269a89e6e794e8c1833ad99d81cf
https://doi.org/10.1016/s0022-0248(99)00703-4
https://doi.org/10.1016/s0022-0248(99)00703-4
Autor:
R. Poprawe, Jürgen Jandeleit, Nicolas Wiedmann, G. Weimann, Rudolf Kiefer, G. Bihlmann, M. Ikulla
Publikováno v:
LEOS 2000. 2000 IEEE Annual Meeting Conference Proceedings. 13th Annual Meeting. IEEE Lasers and Electro-Optics Society 2000 Annual Meeting (Cat. No.00CH37080).
The electrooptic characteristics, like threshold current I/sub th/ and differential quantum efficiency /spl eta//sub d/, of lnGaAs/AlGaAs quantum well lasers generally degrade with rising operating temperature. To ensure high output power and long li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9abfc42488a4f1695cb174340984815
https://doi.org/10.1109/leos.2000.893940
https://doi.org/10.1109/leos.2000.893940
Autor:
Guenter Weimann, Nicolas Wiedmann, Michael Mikulla, Joseph Rogg, Michael Dammann, Reinhart Poprawe, Franz Rinner, Helmer Konstanzer
Publikováno v:
SPIE Proceedings.
To study the influence of the carrier density on the lifetime of broad area high power diodes three different epitaxial structures (double and single quantum wells, different confinement factors) were investigated. The fabricated lasers have similar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::406b8bfb25ea4bb8610780e68fcf096b
https://doi.org/10.1117/12.462643
https://doi.org/10.1117/12.462643
Autor:
Nicolas Wiedmann, Franz Rinner, Martin Walther, Rudolf Kiefer, Guenter Weimann, Michael Mikulla, Marc T. Kelemen, Joseph Rogg
Publikováno v:
SPIE Proceedings.
Semiconductor lasers with high beam quality and high optical output power are very attractive for a variety of applications such as optical pumping of solid-state lasers, fiber amplifiers and medical treatment. When easy and low- cost fabrication is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5d39d0df10b0940ad60a0e9de85b743
https://doi.org/10.1117/12.462644
https://doi.org/10.1117/12.462644
Autor:
Reinhart Poprawe, Juergen Jandeleit, Rudolf Kiefer, Nicolas Wiedmann, Guenter Weimann, Michael Mikulla, G. Bihlmann
Publikováno v:
SPIE Proceedings.
InGaAs/AlGaAs large optical cavity (LOC) single quantum well (SQW) lasers emitting at 980nm were grown incorporating an AlGaAs/GaAs short-period superlattice layer next to the quantum well in order to improve the carrier confinement and thus high-tem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2269c01fc36c3c9c937293f2ced673e
https://doi.org/10.1117/12.432572
https://doi.org/10.1117/12.432572
Publikováno v:
SPIE Proceedings.
High power diode lasers are mainly used for applications such as pumping of solid state lasers, direct material processing (i.e. welding, soldering, hardening, annealing) and printing. The outstanding characteristics of diode lasers are their compact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d78dda52d74adb78cf23f4a9b93fbb0
https://doi.org/10.1117/12.380936
https://doi.org/10.1117/12.380936
Autor:
R. Poprawe, Andreas Ostlender, Wolfgang Brandenburg, Nicolas Wiedmann, Peter Loosen, Juergen Jandeleit
Publikováno v:
SPIE Proceedings.
High power diode lasers can be used for a lot of applications such as pumping of solid state lasers, direct material processing (for example welding, soldering, annealing) and printing. The successful use of high power diode lasers depends on their h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9acd759caea4be007442b09e78be7173
https://doi.org/10.1117/12.380544
https://doi.org/10.1117/12.380544
Autor:
Nicolas Wiedmann, Reinhart Poprawe, Andreas Ostlender, Wolfgang Brandenburg, Peter Loosen, Juergen Jandeleit
Publikováno v:
SPIE Proceedings.
High power diode lasers can be used for a lot of applications such as pumping of solid state lasers, direct material processing and printing. The successful use of high power diode lasers depends on their high efficiency and reliability in combinatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ebba82fd2590e81cdde8eefa50177c2
https://doi.org/10.1117/12.370324
https://doi.org/10.1117/12.370324
Publikováno v:
Testing, Packaging, Reliability, and Applications of Semiconductor Lasers IV.
The degradation of GaAlAs/GaAs laser diode bars mounted on copper micro channel heat sinks was investigated using optical microscopy, scanning electron microscopy and EDX- spectroscopy. The high power diode lasers were characterized before and after
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::166d1a6a93b2e16535c2f0f8ce1425d0
https://doi.org/10.1117/12.345432
https://doi.org/10.1117/12.345432
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