Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Bernhard Stojetz"'
Autor:
Bernhard Stojetz, Jens W. Tomm, Alfred Lell, Muhammad Ali, Robert Kernke, Felix Mahler, Harald König
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 25:1-6
We present an analysis of optical and thermal properties of GaN-based blue-emitting high-power diode laser arrays (bars). Parameters such as emission power and temperature are monitored for each single emitter of arrays consisting of 23 emitters. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed96e9b630b31af2c939e40a985f9ff5
https://doi.org/10.1109/jstqe.2019.2908552
https://doi.org/10.1109/jstqe.2019.2908552
Autor:
Muhammad Ali, Georg Rossbach, Jelena Ristic, Bernhard Stojetz, Volker Krause, Lars Naehle, Matthias Peter, Markus Baumann, Georg Brüderl, Alfred Lell, Soenke Tautz, Uwe Strauss, Werner Bergbauer, John Brückner, Teresa Wurm, Anne Balck, Harald König, Urs Heine, Christoph Eichler, Sven Gerhard, André Somers, Jan Wagner
Publikováno v:
Novel In-Plane Semiconductor Lasers XVIII.
More and more applications are using GaN laser diodes. Visible blue laser devices are well established light sources for converter based business projection of several thousand Lumens. Additional laser-based concepts like near-to-eye projection push
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f5348c7dd3200f0b54be625b26ad14e
https://doi.org/10.1117/12.2511976
https://doi.org/10.1117/12.2511976
Autor:
Michael Stoiber, Simon Drovs, Florian Harth, Bernhard Stojetz, Uwe Strauss, Bernd Köhler, Harald König, Muhammad Ali, Heiko Kissel, Tobias Könning, Alfred Lell, Jens Biesenbach, Philipp König
Publikováno v:
High-Power Diode Laser Technology XVII.
With the advent of high power blue laser diodes in general and blue laser bars in particular new applications are emerging, utilizing this new technology. Possibly the biggest benefits compared to traditional high power diode laser wavelengths in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf3859322321f25389f7ce9d170de9ba
https://doi.org/10.1117/12.2507462
https://doi.org/10.1117/12.2507462
Autor:
Ulrich Witte, Bernhard Stojetz, Anne Balck, Volker Krause, Sörn Ocylok, Harald König, Arnd Kösters, Markus Baumann, Charley Bachert, Muhammad Ali, Jörg Malchus, Rony Vincent Chacko, Uwe Strauss, Deepak Dinakaran, Alfred Lell, Sören Marfels, Matthias Weinbach
Publikováno v:
High-Power Diode Laser Technology XVII.
The availability of high-power blue diode-lasers established a new class of laser sources for materials processing recently. With the significantly shorter wavelength compared to conventional laser sources for materials processing new applications ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d37c89528068dfc232cbed683cbdb936
https://doi.org/10.1117/12.2511255
https://doi.org/10.1117/12.2511255
Publikováno v:
Novel In-Plane Semiconductor Lasers XVIII.
Except for their primary emission, diode lasers frequently show emissions at lower photon energies. We present a study in which we record and analyze emission images of (In,Ga,Al)N-based 450 nm emitting diode lasers. Imaging is realized in the spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0b607e0fcf8fec784a9357bcdd6c34b
https://doi.org/10.1117/12.2509349
https://doi.org/10.1117/12.2509349
Autor:
Bernhard Stojetz, Uwe Strauß, Michael Stoiber, Harald König, Jens Biesenbach, Bernd Köhler, Andreas Löffler, Simon Drovs, Tobias Könning, Alfred Lell, Heiko Kissel, Sascha Dürsch
Publikováno v:
High-Power Diode Laser Technology XVI.
In this paper we report on further development of fiber coupled high-power diode lasers in the visible spectral range. New visible laser modules presented in this paper include the use of multi single emitter arrays @ 450 nm leading to a 120 W fiber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::993be28f5efecacde7b8ed6b2c7733d3
https://doi.org/10.1117/12.2291397
https://doi.org/10.1117/12.2291397
Autor:
Rony V. Chacko, Andreas Löffler, Uwe Strauss, Bernhard Stojetz, Harald König, Alfred Lell, Volker Krause, Arnd Kösters, Charley Bachert, Matthias Weinbach, Sörn Ocylok, Deepak Dinakaran, Ulrich Witte, Sören Marfels, Jörg Malchus, Markus Baumann, Anne Balck
Publikováno v:
High-Power Diode Laser Technology XVI.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16c28bcec433bb40db87a8a2aeae2e94
https://doi.org/10.1117/12.2286631
https://doi.org/10.1117/12.2286631
Autor:
M. Baumann, Christoph Eichler, V. Krause, Harald König, J. Malchus, Uwe Strauss, Andreas Löffler, Bernhard Stojetz, Matthias Peter, Alfred Lell, Muhammad Ali, A. Balck
Publikováno v:
High-Power Diode Laser Technology XVI.
Industrial material processing like cutting or welding of metals is rather energy efficient using direct diode or diode pumped solid state lasers. However, many applications cannot be addressed by established infrared laser technology due to fundamen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26693e5636eaf0d33cdb230c3923754a
https://doi.org/10.1117/12.2286875
https://doi.org/10.1117/12.2286875
Publikováno v:
Novel In-Plane Semiconductor Lasers XVII.
The catastrophic optical damage (COD) of 450-nm emitting InGaN/GaN diode lasers is investigated with special attention to the kinetics of the process. For this purpose, the COD is triggered artificially by applying individual current pulses. This mak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b809444a8347e2055aa891a5976bf66a
https://doi.org/10.1117/12.2286322
https://doi.org/10.1117/12.2286322
Autor:
Christoph Eichler, Sven Gerhard, Muhammad Ali, Soenke Tautz, André Somers, Uwe Strauss, Harald Koenig, Bernhard Stojetz, Matthias Peter, Alfred Lell, Andreas Loeffler, Georg Bruederl, Urs Heine
Publikováno v:
2017 IEEE High Power Diode Lasers and Systems Conference (HPD).
We present the improvements in power conversion efficiency of high power multi-mode blue laser diodes. The improved device architecture shows a peak wall plug efficiency of ∼ 44.2 % at room temperature. Furthermore, the device delivers an optical o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a06e0ed7e75ddcdcde547ec7f3d772e
https://doi.org/10.1109/hpd.2017.8261094
https://doi.org/10.1109/hpd.2017.8261094