Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Holger Mönch"'
Publikováno v:
aot. 1:389-396
High power vertical-cavity surface-emitting laser (VCSEL) arrays can be used as a versatile illumination and heating source. They are widely scalable in power and offer a robust and economic solution for many new applications with moderate brightness
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d32dda50a3947da8787d7f23cbda468a
https://doi.org/10.1515/aot-2012-0047
https://doi.org/10.1515/aot-2012-0047
Autor:
Holger Mönch, Michael Miller, Stephan Gronenborn, Peter Loosen, Pavel Pekarski, Thomas Schwarz
Publikováno v:
IEEE Journal of Quantum Electronics. 48:1040-1044
We present the optical modes of a vertical-cavity surface-emitting laser resonator with a large Fresnel number in one direction, and a small Fresnel number in the other direction. The modes show properties of both the well-known Gaussian modes in las
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b9d85242e17fa47a633315bcf215dfc
https://doi.org/10.1109/jqe.2012.2193386
https://doi.org/10.1109/jqe.2012.2193386
Autor:
Johanna Kolb, M. Strösser, Michael Miller, Peter Loosen, Pavel Pekarski, Stephan Gronenborn, Jens Pollmann-Retsch, Holger Mönch
Publikováno v:
Applied Physics B. 105:783-792
We show how VCSELs with elongated shapes of the emission area can achieve higher output powers and wall-plug efficiency compared to standard circular or quadratic VCSELs. We identified an improved homogeneity of the carrier concentration in the quant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f5976a7e5268637df463b6bcd1992ab
https://doi.org/10.1007/s00340-011-4593-1
https://doi.org/10.1007/s00340-011-4593-1
Autor:
Philipp Gerlach, Bernd Witzigmann, Andreas P. Engelhardt, Roland Jäger, Holger Mönch, Ulrich Weichmann, Johanna Kolb
Publikováno v:
2013 IEEE Photonics Conference.
We utilize high power VCSEL arrays for several applications where high efficiency especially at high operating temperatures is essential. Our approach to design VCSEL devices optimized for the requirements of these applications is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8a65da0f2d0db064bc0965d509543e8
https://doi.org/10.1109/ipcon.2013.6656640
https://doi.org/10.1109/ipcon.2013.6656640
Autor:
Peter Loosen, Michael Berens, Thomas Schwarz, Holger Mönch, Johanna Kolb, Michael Miller, Stephan Gronenborn, Rolf Wester
Publikováno v:
Vertical External Cavity Surface Emitting Lasers (VECSELs) III.
We present a model and results of simulations and experiments investigating the L-I characteristics of electrically pumped (EP-) VECSELs in the single- and multi-mode regime. In our model we use a mode expansion ansatz to treat the electromagnetic fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::359cc280a5b969e34088181ce1e9d33f
https://doi.org/10.1117/12.2002045
https://doi.org/10.1117/12.2002045
Autor:
Holger Mönch, Günther Derra, Achim Körber, Carsten Deppe, Arnd Ritz, Ulrich Weichmann, Folke‐Charlotte Nörtemann, Hermann Giese, Thomas Krücken, Ulrich Niemann, Mark Carpaij, Jens Pollmann-Retsch, Ulrich Hechtfischer, Johannes Baier, Uwe Mackens, Pavel Pekarski
Publikováno v:
Journal of the Society for Information Display. 15:789
— Projection systems have found widespread use in conference rooms and other professional applications during the last decade and are now entering the home-TV market with considerable pace. Projectors as small as about one liter are nowadays able t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c237b4fff657a60d2f1a170c4c93cf2
https://doi.org/10.1889/1.2798817
https://doi.org/10.1889/1.2798817
Publikováno v:
SID Symposium Digest of Technical Papers. 30:1076
The fast developments in projection display technology require a corresponding development of short arc lamps. Arc length and high luminance determine light collection rather than lamp power. The new UHP lamps combine highest brightness, extremely lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48ccfc0d4ffddccc023a420739ab40a1
https://doi.org/10.1889/1.1833953
https://doi.org/10.1889/1.1833953