Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Johann Luft"'
Autor:
Martin Behringer, Johann Luft
Publikováno v:
Laser Technik Journal. 2:57-63
Over the last few decades, the tremendous progress in diode lasers has led to devices with excellent properties, such as high modulation up to the GHz regime, very high efficiency and kW-output levels. All this has been achieved with very small devic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b3ae39507b4300cb12febf8437b4e44
https://doi.org/10.1002/latj.200790040
https://doi.org/10.1002/latj.200790040
Autor:
Stephan Lutgen, Ines Pietzonka, Tony Albrecht, Johann Luft, P. Brick, M. Furitsch, Stefan Illek, K. Streubel, W. Diehl
Publikováno v:
IEEE Photonics Technology Letters. 19:1952-1954
The monolithic integration of pump lasers and optically pumped vertical-external-cavity surface-emitting lasers is demonstrated. An innovative contacting scheme for the pump lasers offers high design flexibility and scalability. First devices at 1000
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a343eb78e63eae40f8470c9fde2e1f55
https://doi.org/10.1109/lpt.2007.909671
https://doi.org/10.1109/lpt.2007.909671
Publikováno v:
Applied Physics Letters. 82:3620-3622
We demonstrate more than 8-W continuous-wave output power with good beam quality (M2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::357214ccdc3263c126b8d24cc6ffc637
https://doi.org/10.1063/1.1579137
https://doi.org/10.1063/1.1579137
Autor:
Ines Pietzonka, Peter Brick, Wolfgang Stolz, Stephan Lutgen, Stefan Illek, Johann Luft, Tony Albrecht, M. Furitsch, Wolfgang Diehl
Publikováno v:
SPIE Proceedings.
Semiconductor disk lasers have attracted a lot of interest in the last few years due to high output power combinedwith good beam quality and possible wavelength engineering. One of the disadvantages is the need for externaloptical pumping by edge-emi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2bc280625c033f90d4eb8ae39a80cb0
https://doi.org/10.1117/12.781018
https://doi.org/10.1117/12.781018
Autor:
D. Lorenzen, Günther Grönninger, Harald König, Marc Philippens, Michael Stoiber, Martin Müller, Gerhard Herrmann, Martin Reufer, Jürgen Moosburger, Johann Luft
Publikováno v:
SPIE Proceedings.
In this paper we report on quasi-continuous-wave (q-cw) operation of monolithically stacked laser diode bars. Monolithically stacked laser diode bars consist of more than one laser diode grown on top of each other. In between every two laser diodes a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26b31ff77085bdedb8d4d47d3885112b
https://doi.org/10.1117/12.699827
https://doi.org/10.1117/12.699827
Autor:
Johann Luft, W. Diehl, Wolfgang Reill, Peter Brick, Stephan Lutgen, Ines Pietzonka, M. Furitsch, Stefan Illek
Publikováno v:
2006 IEEE LEOS Annual Meeting Conference Proceedings.
Results on high-power optically pumped semiconductor disk lasers are reviewed. Multi-Watt emission with differential efficiencies larger than 40% and power-densities up to 15 kW/cm2 is demonstrated in the near-infrared wavelength range of 920-1050nm.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a43a2e8c5b676040c1138f616325c554
https://doi.org/10.1109/leos.2006.278937
https://doi.org/10.1109/leos.2006.278937
Publikováno v:
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005..
We report on novel semiconductor disk laser concepts with direct optical pumping of the quantum wells. 5 W cw output power from a semiconductor disk laser at 920 nm with 39% optical conversion efficiency has been demonstrated.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::736a7ee4e8317e0652a078520445cfa7
https://doi.org/10.1109/cleoe.2005.1567906
https://doi.org/10.1109/cleoe.2005.1567906
Autor:
J. Biesenbach, P. Hennig, S. Huke, M. Schröder, M. Stoiber, D. Lorenzen, Peter Brick, Johann Luft, Harald König, Marc Philippens
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
In this paper we present improvements on 940 nm high power diode lasers. For 10 mm bars maximum wallplug efficiencies of 65% are demonstrated using 2 mm resonators. Bars mounted with hard solder show good reliability behaviour.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9ac1f6426da4adcc36c484f5013d75b
https://doi.org/10.1109/cleo.2006.4628741
https://doi.org/10.1109/cleo.2006.4628741
Autor:
S. Reinhard, S. Lutgen, T. F. Albrecht, Ulrich Dr. Steegmüller, Michael Dr. Kühnelt, Wolfgang Stolz, Bernadette Kunert, Kerstin Volz, Wolfgang Reill, M. Engl, Peter Brick, Johann Luft, Norbert Linder, Wolfgang Schmid, W. Diehl
Publikováno v:
NUSOD '05. Proceedings of the 5th International Conference on Numerical Simulation of Optoelectronic Devices, 2005..
We present high-power emission from semiconductor disk lasers. By intra-cavity frequency-doubling of multi-Watt infra-red emission, more than 0.6 W of blue and green have been generated. 200 mW have been achieved directly for red emitters.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea415a78c3637b88f38a4c139842388c
https://doi.org/10.1109/nusod.2005.1518161
https://doi.org/10.1109/nusod.2005.1518161
Autor:
Johann Luft, B. Spellenberg, Jens W. Tomm, A. Lambrecht, Fritz Weik, J. Nurnus, U. Vetter, Michael Bassler, Regine Glatthaar, M. Behringer
Publikováno v:
SPIE Proceedings.
We present a novel hybrid light emitting device design based on a standard InAlGaAs/GaAs high-power laser diode array chip as a pump source and a narrow-gap PbSe-layer as active optical material. Maximum cw output powers of more than 1.1 mW and slope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e22d8ffd82f5181ac179319d9806c43
https://doi.org/10.1117/12.611330
https://doi.org/10.1117/12.611330