Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Urs Heine"'
Autor:
Sven Gerhard, Lars Naehle, Bruno Jentzsch, Harald Koenig, Elisabeth Reiger, Urs Heine, Soenke Tautz, Christoph Eichler, Georg Bruederl, Teresa Wurm, Damir Borovac, Martin Behringer, Laura Kreiner, Mariel Jama, Norwin von Malm, Anne Balck, Markus Baumann, Volker Krause
Publikováno v:
Gallium Nitride Materials and Devices XVIII.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b26337f1b6b92df76dbd598d1111d21
https://doi.org/10.1117/12.2648293
https://doi.org/10.1117/12.2648293
Autor:
Harald König, Muhammad Ali, Urs Heine, Christoph Eichler, Alfred Lell, Markus Baumann, Sven Gerhard, Christoph Walter, Volker Krause, Martin Behringer, Anne Balck, Markus Keidler, Georg Brüderl, Matthias Peter, Soenke Tautz, Tobias Haupeltshofer
Publikováno v:
High-Power Diode Laser Technology XVIII.
Blue high-power semiconductor lasers have increased greatly in performance over the recent decade enabling new application fields from high brightness projection up to materials processing beyond 1000W output power systems. Base for best system perfo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13627c1e4078280ce0159f725a971cba
https://doi.org/10.1117/12.2543306
https://doi.org/10.1117/12.2543306
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:
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
Autor:
Uwe Strauss, Georg Bruederl, Harald Koenig, Matthias Peter, Bernhard Stojetz, André Somers, Urs Heine, Andreas Loeffler, Christoph Eichler, Sven Gerhard, Teresa Wurm, Soenke Tautz
Publikováno v:
SPIE Proceedings.
The range of applications of blue and green lasers is increasing from year to year. Driving factors are costs and performance. On one hand we study the characteristics of low power R&D c-plane laser structures with improved Gaussian vertical and hori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a3b1b472b228894850b2fad66a02cee
https://doi.org/10.1117/12.2254504
https://doi.org/10.1117/12.2254504
Publikováno v:
physica status solidi (RRL) - Rapid Research Letters. 4:166-168
The temperature dependent band edge energy of the novel tungsten bronze type calcium barium niobate (CBN) is measured over a temperature range from 80 K to 573 K. CBN has been under investigation for serveral years and is believed to be a promising m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98376540f25dc66ba5b10585868fa5b3
https://doi.org/10.1002/pssr.201004158
https://doi.org/10.1002/pssr.201004158
Publikováno v:
Physical Review B. 81
Using noncollinear optical second-harmonic generation, the characteristic lengths of ferroelectric domains in strontium-barium niobate are determined. The role of the domain geometry in the random quasiphase matching process involved is elucidated by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::319ecf3bf4d7948d3107405f134d1f93
https://doi.org/10.1103/physrevb.81.214104
https://doi.org/10.1103/physrevb.81.214104
Publikováno v:
Nonlinear Optics: Materials, Fundamentals and Applications.
We report on a technique for the measuring of ferroelectric domain structuring (k-space spectroscopy). Momentum conservation for optical second harmonic generation is achieved by the Fourier representation of the domain structuring (random quasiphase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a04717d6bb90c3d8858bb9385a39dbbe
https://doi.org/10.1364/nlo.2007.wc7
https://doi.org/10.1364/nlo.2007.wc7
Publikováno v:
Nonlinear Optics: Materials, Fundamentals and Applications.
We present k-spectra of the ferroelectric SBN showing that domains react size-dependent at the phase transition and on external electric fields. Thus, all models assuming domains in SBN to behave uniquely have to be reconsidered.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fe824b0e8f9d1f0a18ea13aa9e1681b
https://doi.org/10.1364/nlo.2007.we23
https://doi.org/10.1364/nlo.2007.we23
Publikováno v:
New Journal of Physics. 11:083021
We present investigations on temperature-dependent changes in the size distribution of ferroelectric domains in single crystals of the novel tungsten bronze type calcium barium niobate (CBN). Since its congruently melting composition has a relatively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cda8ddfd8c225d09063b83d626c5116
https://doi.org/10.1088/1367-2630/11/8/083021
https://doi.org/10.1088/1367-2630/11/8/083021