Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Holger Kern"'
Autor:
Holger Kern
Publikováno v:
Wege zur Lehrerpersönlichkeit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fe45b33b1c742a62e257fdb3ba39061
https://doi.org/10.2307/j.ctvddztqd.8
https://doi.org/10.2307/j.ctvddztqd.8
Autor:
Andreas Grohe, Haro Fritsche, Till Wallendorf, Bastian Kruschke, Axel Reich, Thomas Hagen, Ronny Steger, Holger Kern, Wolfgang Gries, Fabio Ferrario, Dennis Sanftleben, Ralf Koch
Publikováno v:
SPIE Proceedings.
The modular concept of DirectPhotonics laser systems is a big advantage regarding its manufacturability, serviceability as well as reproducibility. By sticking to identical base components an economic production allows to serve as many applications a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::784cafbfd40b17ed8634095a906e7dd4
https://doi.org/10.1117/12.2214067
https://doi.org/10.1117/12.2214067
Autor:
Fabio Ferrario, Ralf Koch, Bastian Kruschke, Silke Pflueger, Ullrich Pahl, Andreas Grohe, Haro Fritsche, Holger Kern, Wolfgang Gries, Einar Ehm
Publikováno v:
High-Power Diode Laser Technology and Applications XIII.
For an economic production it is important to serve as many applications as possible while keeping the product variations minimal. We present our modular laser design, which is based on single emitters and various combining technics. In a first step
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a48bd2e0143a290ead3865ac390ed4f
https://doi.org/10.1117/12.2080123
https://doi.org/10.1117/12.2080123
Autor:
Andreas Grohe, Haro Fritsche, Ulrich Pahl, Thomas Hagen, Bastian Kruschke, Ralf Koch, Wolfgang Gries, Holger Kern
Publikováno v:
SPIE Proceedings.
Laser diodes are efficient and compact devices operating in a wide range of wavelengths. Boosting power by beam combining while maintaining good beam quality has been a long-standing challenge. We discuss various approaches for beam combining with em
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e1fd3fc7e7cd12820e9ead0abca4100
https://doi.org/10.1117/12.2079553
https://doi.org/10.1117/12.2079553
Autor:
Bastian Kruschke, Ulrich Pahl, Fabio Ferrario, Haro Fritsche, Silke Pflueger, Holger Kern, Wolfgang Gries, Ralf Koch
Publikováno v:
SPIE Proceedings.
High power, high brightness diode lasers are beginning to challenge solid state lasers, i.e. disk and fiber lasers. The core technologies for brightness scaling of diode lasers are optical stacking and dense spectral combining (DSC), as well as impro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42d37e6f93a4ed5efb7c7262c99c575a
https://doi.org/10.1117/12.2041824
https://doi.org/10.1117/12.2041824
Autor:
Holger Kern, Jürgen Heinrich, Lutz Ehrhardt, Gerhard Wenz, Alfred Blume, Patrick Garidel, Petra Mischnick, SooWhan Choi
Publikováno v:
Carbohydrate Research. 326:67-79
An improved heterogeneous procedure has been found for the regioselective introduction of trityl and 4-methoxytrityl groups at the primary positions of cellulose. The 6- O -tritylcelluloses produced were completely methylated by MeI–NaOH in Me 2 SO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::037db37a97db94af5359c343958a7753
https://doi.org/10.1016/s0008-6215(00)00024-0
https://doi.org/10.1016/s0008-6215(00)00024-0
Autor:
Holger Kern
Publikováno v:
Unterrichten an Waldorfschulen ISBN: 9783658005504
„Musiklehrer an einer allgemeinbildenden Schule? … Ich – Bestimmt nicht!“ So oder so ahnlich ist oft der Gedankengang, wenn es infolge des Berufswunsches ‚Musiker‘ dann um die Frage des konkreten Berufsbildes geht. Der junge Mensch, der d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::671b7da7e2496780ad43b6eae90495fe
https://doi.org/10.1007/978-3-658-00551-1_9
https://doi.org/10.1007/978-3-658-00551-1_9
Autor:
Thomas Metzger, David Ashkenasi, Hans Joachim Eichler, Thomas Riesbeck, Gerhard J. Mueller, Holger Kern, Alexander Binder
Publikováno v:
SPIE Proceedings.
To meet the industry's demand for reducing machine cycle lengths concerning laser-drilling a Nd:YAG Master-Oscillator Power-Amplifier (MOPA)-system was developed at the LMTB-laboratories that emits high-power peak-pulses at excellent beam-quality. Pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::699f31b314126c169c4ab010e993b8e7
https://doi.org/10.1117/12.479235
https://doi.org/10.1117/12.479235
Autor:
David Ashkenasi, Andreas Ziegert, Norbert Mueller, Holger Kern, Houssam Jaber, Alexander Binder
Publikováno v:
SPIE Proceedings.
Ceramic and crystalline wafer substrates are widely used in microelectronics. The individual choice is based on their thermal, optical and mechanical properties. For a variety of applications high quality laser micro processing of these materials, i.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::770bebb8a678ae1de98afce3202f3672
https://doi.org/10.1117/12.479234
https://doi.org/10.1117/12.479234
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