Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Ulrich Hartwig"'
Autor:
Mathias Brümmer, Ulrich Hartwig
Publikováno v:
Physik in unserer Zeit. 52:123-129
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6f0d7ae5205635622f28ee574fb65a6
https://doi.org/10.1002/piuz.202001595
https://doi.org/10.1002/piuz.202001595
Publikováno v:
Wasser, Energie und Umwelt ISBN: 9783658356064
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3119d5ca016a23980fc8ef82be0ceb46
https://doi.org/10.1007/978-3-658-35607-1_65
https://doi.org/10.1007/978-3-658-35607-1_65
Publikováno v:
Wasser und Abfall. 19:12-21
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68d6b8560de25be69a970e5d5fdf3912
https://doi.org/10.1007/s35152-017-0073-1
https://doi.org/10.1007/s35152-017-0073-1
Autor:
Hans-Ulrich Hartwig
Publikováno v:
Klimaneutralität – Hessen 5 Jahre weiter ISBN: 9783658206055
Das Ziel „Klimaneutrale Landesverwaltung Hessen“ fokussiert zunachst vom Verantwortungsbereich her auf die Landesverwaltung Hessen. Viele Aktivitaten sind im Kontext Landesverwaltung seit dem Beginn des Projekts vor jetzt fast zehn Jahren initiie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c470494518a0885ff9a08ba7aa7508e5
https://doi.org/10.1007/978-3-658-20606-2_31
https://doi.org/10.1007/978-3-658-20606-2_31
Publikováno v:
Applied Physics B. 95:519-524
A new class of photo-refractive (PR) composite materials based on poly(N-vinylcarbazole) (PVK) (co-)sensitized with nano-crystalline lithium niobate (LiNbO3) is presented. The steady-state performance, as well as the kinetics of the photo-refractive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef4850368257be2e7b1d40d50c9b4bcc
https://doi.org/10.1007/s00340-009-3544-6
https://doi.org/10.1007/s00340-009-3544-6
Publikováno v:
SPIE Proceedings.
Recent developments in blue emitting laser diodes enable attractive solutions in projection applications using phosphors for efficient light conversion with very high luminance levels. Various commercially available projectors incorporating this tech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f72d4e3eb046872323c64df6ffea7c4d
https://doi.org/10.1117/12.2187412
https://doi.org/10.1117/12.2187412
Publikováno v:
Journal of Physics: Condensed Matter. 18:L447-L450
A method is presented to acquire the absorption cross sections of dopants in photorefractive lithium niobate crystals utilizing doubly doped samples. The absorption cross section of one dopant must be well known. By illumination with ultraviolet ligh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eebf16d4680cc9a42bb83b2b542e97b
https://doi.org/10.1088/0953-8984/18/37/l01
https://doi.org/10.1088/0953-8984/18/37/l01
Publikováno v:
Applied Physics B. 80:227-230
Permanent reversible diffraction gratings with refractive-index modulations of up to ≃10-4 and with a grating vector perpendicular to the polar axis are realized in LiNbO3:Cu crystals by making use of high temperature recording and charge compensat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e411edfca46bfcf556f729a92d2cf7b
https://doi.org/10.1007/s00340-004-1712-2
https://doi.org/10.1007/s00340-004-1712-2
Publikováno v:
Applied Physics B: Lasers and Optics. 76:403-406
The electrooptic effect in lithium niobate crystals (LiNbO3) for extremely high externally applied electric fields of up to 65 kV/mm is investigated. Homogeneous electrooptic refractive-index changes of up to 4.8×10-3 are found for ordinarily polari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e74c81d7ec8989f64f4b2671db043bc
https://doi.org/10.1007/s00340-003-1123-9
https://doi.org/10.1007/s00340-003-1123-9
Challenges for reducing the size of laser activated remote phosphor light engines for DLP projection
Autor:
Ulrich Hartwig, Mathias Bruemmer
Publikováno v:
International Optical Design Conference 2014.
Laser activated remote phosphor (LARP) is an upcoming technology for high luminance SSL light engines. This presentation outlines some of the challenges met reducing the engine’s size, so it can be retrofitted into DLP-projectors.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::228bcd3ab805b59ad2e6390728b4de18
https://doi.org/10.1117/12.2073275
https://doi.org/10.1117/12.2073275