Zobrazeno 1 - 10
of 318
pro vyhledávání: '"Markus Pollnau"'
Autor:
Teresa Delgado, Nando Gartmann, Bernhard Walfort, Fabio LaMattina, Markus Pollnau, Arnulf Rosspeintner, Jafar Afshani, Jacob Olchowka, Hans Hagemann
Publikováno v:
Advanced Photonics Research, Vol 3, Iss 4, Pp n/a-n/a (2022)
The compound SrAl2O4:Eu2+,Dy3+ is currently one of the best‐performing persistent phosphors and numerous studies have been performed to understand the mechanisms involved in its afterglow process. One aspect which so far has received only limited a
Externí odkaz:
https://doaj.org/article/8d797b41a77b4874a7718134ea34113f
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 1, Pp 1-9 (2019)
Distributed-feedback waveguide lasers based on Bragg-grating resonators generate ultranarrow-linewidth emission. Oscillation at the center of the reflection band ensures maximum reflectivity, hence minimum linewidth. The required π/2 phase shift is
Externí odkaz:
https://doaj.org/article/ea9edbd518654ac694d9ea8475647b1e
Autor:
Andrea Diego-Rucabado, Alfredo Segura, Fernando Aguado, Markus Pollnau, Rafael Valiente, Rosa Martín-Rodríguez, Israel Cano
Publikováno v:
Journal of Luminescence, 2022, 252, 119378
Pr3+-doped yttria (Y2O3) nanocrystal layers embedded in between pure yttria thin films were prepared on four different substrates. Pulsed laser deposition was used to fabricate this sandwich-like structure. An exhaustive structural and optical charac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d6365006bc63c804df049692de2d232
https://hdl.handle.net/10902/27005
https://hdl.handle.net/10902/27005
Publikováno v:
Fiber Lasers and Glass Photonics: Materials through Applications III.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f29ea4e66e39100290aeed5ae273a0a7
https://doi.org/10.1117/12.2621959
https://doi.org/10.1117/12.2621959
Autor:
Markus Pollnau
Publikováno v:
NATO Science for Peace and Security Series B: Physics and Biophysics ISBN: 9789402421378
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd36d3945f3ce799fa40a6c995e09b84
https://doi.org/10.1007/978-94-024-2138-5_10
https://doi.org/10.1007/978-94-024-2138-5_10
Autor:
Jun Wan Kim, Sun Young Choi, Shanmugam Aravazhi, Markus Pollnau, Uwe Griebner, Valentin Petrov, Sukang Bae, Kwang Jun Ahn, Dong-Il Yeom, Fabian Rotermund
Publikováno v:
AIP Advances, Vol 5, Iss 1, Pp 017110-017110-6 (2015)
A diode-pumped Yb:KYW planar waveguide laser, single-mode Q-switched by evanescent-field interaction with graphene, is demonstrated for the first time. Few-layer graphene grown by chemical vapor deposition is transferred onto the top of a guiding lay
Externí odkaz:
https://doaj.org/article/77b82627d069436290dde5c8b96400f5
Autor:
Cristine Calil Kores, Markus Pollnau, Meindert Dijkstra, Pavel Loiko, Dimitri Geskus, L. Agazzi
Publikováno v:
CLEO: Science and Innovations, CLEO_SI 2020
CLEO
CLEO
Ridge waveguides in amorphous Al2O3:Yb3+ are produced by reactive co-sputtering and reactive-ion etching. Their spectroscopic properties, optical gain, and cooperative upconversion are studied and explained based on a model of distinct ion classes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45a72bab4628c87f1822bf8d69590715
https://doi.org/10.1364/cleo_si.2020.sth4f.4
https://doi.org/10.1364/cleo_si.2020.sth4f.4
Autor:
Teresa Delgado, Nando Gartmann, Markus Pollnau, Bernhard Walfort, Hans Hagemann, Jacob Bierwagen, Isabel Kinski
Publikováno v:
Fiber Lasers and Glass Photonics: Materials through Applications II.
SrAl2O4 that is optically activated by Eu2+, often additionally co-doped with Dy3+, is a non-radioactive persistent phosphor which is known for its excellent afterglow properties. It has found various applications, e.g. in the watch industry, for sec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e9e9c97922ea899d1623309e6d4a8a0
https://doi.org/10.1117/12.2558394
https://doi.org/10.1117/12.2558394
Autor:
Markus Pollnau, Jerry Yeung
Publikováno v:
Fiber Lasers and Glass Photonics: Materials through Applications II.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::481e105560268938cc86f4ed5dc65b9f
https://doi.org/10.1117/12.2556001
https://doi.org/10.1117/12.2556001
Autor:
Guillaume Jiranek, Teresa Delgado, Hans Hagemann, Nando Gartmann, Markus Pollnau, Bernhard Walfort, Songhak Yoon, Jakob Bierwagen
Publikováno v:
Journal of Luminescence, Vol. 222, No 117113 (2020)
Wavelength-dependent thermoluminescence (TL) experiments were performed on SrAl2O4:Eu, SrAl2O4:Eu,B, SrAl2O4:Eu,Dy and SrAl2O4:Eu,Dy,B polycrystalline samples. Excitation at 445 nm allows to selectively excite one of the two different Eu2+ ions subst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfdf6161f16586901644beb9737008f4
https://archive-ouverte.unige.ch/unige:140938
https://archive-ouverte.unige.ch/unige:140938