Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Mitsuo Yamaga"'
Publikováno v:
Journal of Luminescence. :119953
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::224548571c5f622467f4053f8466ce6c
https://doi.org/10.1016/j.jlumin.2023.119953
https://doi.org/10.1016/j.jlumin.2023.119953
Autor:
Mitsuo Yamaga, Shintaro Mizuno, Kazuo Hasegawa, Encarnación G. Víllora, Okihiro Sawada, Kiyoshi Shimamura, Yasuhiko Takeda, Thomas P. J. Han
Publikováno v:
Journal of Luminescence. 202:393-402
Substitutional disordered garnet crystal hosts such as (Y1-xGdx)3(Al1-yScy)5O12 (YGSAG) produce inhomogeneous broadening of the optical spectra of the dopant, making them good candidates for solar-pumped laser materials. In the case of codoping with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cebf5824c1230fa3c8493b260883e2d0
https://doi.org/10.1016/j.jlumin.2018.05.067
https://doi.org/10.1016/j.jlumin.2018.05.067
Publikováno v:
Journal of Luminescence. 169:773-776
We report on a method of employing spin Hamiltonian data to enhance the accuracy of crystal-field fits for rare-earth impurity sites of low symmetry in crystalline hosts. As an initial test of this method, we apply it to orthorhombic sites in Li+ and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62515d8d9e5601eca64a197d98225cbc
https://doi.org/10.1016/j.jlumin.2015.02.045
https://doi.org/10.1016/j.jlumin.2015.02.045
Autor:
Mitsuo Yamaga, Kiyoshi Shimamura, Hiroshi Ito, Thomas P. J. Han, Kazuki Takagi, Encarnación G. Víllora, Kazuo Hasegawa, Yasuhiko Takeda, Shintaro Mizuno
Publikováno v:
Journal of Luminescence. 169:65-71
Garnet crystals codoped with Nd3+ and Cr3+ ions are a candidate for solar-pumped laser materials. Substitutional disordered crystals Y3GaxAl5-xO12 were prepared to improve the pumping efficiency of Nd3+ luminescence and energy transfer from Cr3+ to N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::660fae9835847c2c943d470800522ffb
https://doi.org/10.1016/j.jlumin.2015.08.044
https://doi.org/10.1016/j.jlumin.2015.08.044
Autor:
Takayuki Ban, Fumitaka Ohashi, Shuichi Nonomura, Tetsuji Kume, Shogo Sunaba, Takumi Kishita, Roto Himeno, Kouhei Goto, Mitsuo Yamaga
Publikováno v:
Journal of Physics and Chemistry of Solids. 140:109358
Silicon clathrates are Si-cage-based structures capable of hosting other atoms, such as sodium, in their Si-polyhedron cages. Electron spin resonance (ESR) can provide information on the electronic structure of localized or delocalized electrons in c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::428569b4700826f0c4b7d7c4f78af725
https://doi.org/10.1016/j.jpcs.2020.109358
https://doi.org/10.1016/j.jpcs.2020.109358
Autor:
H. Itoh, Tomoyoshi Motohiro, Kazuo Hasegawa, Mitsuo Yamaga, Akio Ikesue, Yasuhiko Takeda, Tadashi Ichikawa
Publikováno v:
Laser Congress 2017 (ASSL, LAC).
We have proposed a new configuration of a solar-pumped laser employing a transparent ceramics rod. The laser has a composite structure consisting of a Nd/Cr:YAG gain rod surrounded by Gd:YAG non-gain parts with the same refractive index as Nd/Cr:YAG.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f33593ac346c7fa807c4f75eb413c218
https://doi.org/10.1364/assl.2017.jtu2a.27
https://doi.org/10.1364/assl.2017.jtu2a.27
Publikováno v:
Optical Materials. 36:1776-1780
Temperature dependence of decay curves of persistent phosphorescence in Eu 2+ -doped Ba 3 SiO 5 crystals indicates that there are, at least, three electron–hole recombination centers. The decay curve from the dominant center is represented by I ( t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5db5f993e321611c92fd523d7feedc7c
https://doi.org/10.1016/j.optmat.2014.05.017
https://doi.org/10.1016/j.optmat.2014.05.017
Autor:
Masaki Nomura, Tetsuji Kume, Takumi Kishita, Mitsuo Yamaga, Shuichi Nonomura, Fumitaka Ohashi, Koki Uehara, Takayuki Ban
Publikováno v:
Springer Proceedings in Energy ISBN: 9783319456768
Silicon clathrate thin films, Na x Si136 (x > 5), were prepared on Si (111) substrates. The X-ray diffraction (XRD) pattern shows a mixture of the type II Si-clathrate crystalline and amorphous phases. The electron-spin resonance (ESR) spectrum for t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d19de53b0088a837a1e66ee6d39cc2ef
https://doi.org/10.1007/978-3-319-45677-5_26
https://doi.org/10.1007/978-3-319-45677-5_26
Autor:
Mitsuo Yamaga, M. Bockowski, K.P. O'Donnell, Paul R. Edwards, Menno J. Kappers, Katharina Lorenz
Eu-doped GaN is a promising material with potential application not only in optoelectronics but also in magneto-optical and quantum optical devices ‘beyond the light emitting diode’. Its interesting spectroscopy is unfortunately complicated by sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9835bab872bc149ff86d43b321518ae
https://strathprints.strath.ac.uk/55347/1/O_Donnell_et_al_APL2016_crystalfield_symmetries_of_luminescent_Eu3_centers_in_GaN.pdf
https://strathprints.strath.ac.uk/55347/1/O_Donnell_et_al_APL2016_crystalfield_symmetries_of_luminescent_Eu3_centers_in_GaN.pdf
Publikováno v:
physica status solidi c. 9:2300-2303
Luminescence spectra of Nd3+ and Ce3+ excited in absorption bands of Ce3+ in Y3Al5O12 (YAG) ceramics codoped with 0.9 mol.% Nd3+ and 0.05 mol.% Ce3+ were measured in a temperature range between 10 and 300 K. Their luminescence spectra indicate an ene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce89c886595bc2255484ef6e8cabd462
https://doi.org/10.1002/pssc.201200200
https://doi.org/10.1002/pssc.201200200