Log in

Relevant bibliographies by topics / Rare earth ions / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Rare earth ions.

Dissertations / Theses on the topic 'Rare earth ions'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Rare earth ions.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Hansen, Peter C. "Laser spectroscopy of rare earth ions." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293472.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Kooy, Hendrikus Johannes. "Two-body operators and rare-earth spectroscopy." Thesis, [Hong Kong : University of Hong Kong], 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13787330.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Todoroki, Shin-ichi. "Studies on local structure around rare earth ions in glasses." Kyoto University, 1993. http://hdl.handle.net/2433/51187.

Full text

Abstract:

学位授与大学:京都大学;学位の種類:博士(工学);学位記番号:工博第1285号;学位授与日付:1993-03-23<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第5394号<br>工博第1285号<br>新制||工||903(附属図書館)<br>UT51-93-F151<br>京都大学大学院工学研究科工業化学専攻<br>(主査)教授曽我直弘, 教授作花濟夫, 教授小久保正<br>学位規則第4条第1項該当

APA, Harvard, Vancouver, ISO, and other styles

4

Townsend, Janet E. "The development of optical fibres doped with rare-earth ions." Thesis, University of Southampton, 1990. https://eprints.soton.ac.uk/400704/.

Full text

Abstract:

Research into rare-earth ion doping of silica based optical fibres is described and a detailed study of the fabrication process reported. Dilute solutions of rare-earth ions are employed to incorporate dopants into preforms prepared by conventional methods. Alternative core glass compositions are also studied. Parameters affecting dopant incorporation, host composition and refractive index, as well as impurity concentration are investigated. Spectroscopic fluorescence and absorption measurements are presented and provide important information for device applications. In addition, fluorescence

APA, Harvard, Vancouver, ISO, and other styles

5

Xu, Amei. "Luminescence properties of Zinc oxide doped with rare earth ions." Ohio University / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1174408190.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Martin, Rodica M. "Reciprocity between emission and absorption for rare earth ions in glass." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-042806-110237/.

Full text

Abstract:

Dissertation (Ph.D.)--Worcester Polytechnic Institute.<br>Keywords: homogeneous broadening, McCumber theory, emission and absorption cross sections, rare earth ions, inhomogeneous broadening. Includes bibliographical references (p.171-178).

APA, Harvard, Vancouver, ISO, and other styles

7

Webb, Helen Rachael 1975. "Interaction of the rare earth ions with p-sulfonatocalix[4]arene and 18-crown-6." Monash University, Dept. of Chemistry, 2001. http://arrow.monash.edu.au/hdl/1959.1/9076.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

McDougall, James. "Spectroscopic properties of rare earth ions in zirconium based fluoride glasses." Thesis, University of the West of Scotland, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261598.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Grigorova, A. V., V. K. Klochkov, N. S. Kavok, and O. O. Sedyh. "Colloidal Nanocrystalline Luminophors Doped by Rare-earth Ions for Biological Testing." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34997.

Full text

Abstract:

nReVO4:Eu3+ (Re Gd, Y, Sm, La) luminescent nanocrystals of different shape and size from 2 to 300 nm have been synthesized. Luminescence of nReVO4:Eu3+ nanocrystals are effectively excited under UV and visible irradiation. By means of luminescence microscopy and luminescence microspectroscopy it has been revealed that spherical nanocrystals with an average diameter from 3 to 20 nm tend to accumulate mainly in the isolated rat hepatocyte nuclei. Spherical nGdYVO4:Eu3+ nanocrystals are efficient inorganic markers and can be used in systems of selective delivery of substances into the cell n

APA, Harvard, Vancouver, ISO, and other styles

10

Al-Maghrabi, Mufied Mahmoud. "Thermoluminescence spectra from sulphates, fluorides and garnets doped with rare earth ions." Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366054.

Full text

Abstract:

Luminescence measurements have been applied to three different structures namely, sulphate, fluorides and YAG. In all cases the RE doping suppresses the intrinsic emission and results in intense luminescence characteristic of the RE dopant. Additionally, in double doped samples, or contaminated ones, the TL data show that each dopant defines a glow peak, which is displaced in temperature relative to the others. Examples of this were discussed for CaS04:Ce,Mn; YAG:Nd,Tb,Cr,Mn; BaF2:Ho,Ce and BaF2:Tm,Ce. The data are discussed in terms of an energy transfer model between different parts of exten

APA, Harvard, Vancouver, ISO, and other styles

11

Ahmad, Kamil Suraya. "Ultrafast laser plasma doping of rare earth ions for optical waveguiding applications." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/19503/.

Full text

Abstract:

The work presented here is to introduce and investigate a novel material and a fabrication technique for an Er3+ ion doped waveguide amplifier (EDWA) on a silicon platform. EDWA performance strongly depends on the erbium concentration and the nature of the host material. There are two materials studied for this work. For the first material, TeO2-ZnO-Na2O-Er2O3 (Er-TZN) is doped into the silica-on-silicon (SOS) substrate surface, and for the second material, Er-TZN is doped into the surface of Si3N4-on-silicon. For the first material, the mixing of Er-TZN with SiO2 produces a homogeneous layer

APA, Harvard, Vancouver, ISO, and other styles

12

Fraval, Elliot. "Minimising the decoherence of rare earth ion solid state spin qubits /." View thesis entry in Australian Digital Theses Program, 2005. http://thesis.anu.edu.au/public/adt-ANU20061010.124211/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Flanagan, Bernadine Mary. "The spectroscopy of trivalent lanthanoid ions in organic hosts /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16843.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Rowlands, Aled Prys. "Thermoluminescence detection of phase transitions : their effects and applications." Thesis, University of Sussex, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263912.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Fujita, Koji. "OPTICAL AND MAGNETO-OPTICAL PROPERTIES OF RARE-EARTH IONS IN NON-CRYSTALLINE OXIDES." Kyoto University, 1999. http://hdl.handle.net/2433/59317.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Ueda, Ｊunpei. "Spectral conversion materials using rare earth and transition metal ions for green photonics." Kyoto University, 2012. http://hdl.handle.net/2433/157659.

Full text

Abstract:

Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(人間・環境学)<br>甲第16948号<br>人博第591号<br>新制||人||141(附属図書館)<br>23||人博||591(吉田南総合図書館)<br>29623<br>京都大学大学院人間・環境学研究科相関環境学専攻<br>(主査)教授田部勢津久, 教授杉山雅人, 教授加藤立久<br>学位規則第4条第1項該当

APA, Harvard, Vancouver, ISO, and other styles

17

Åberg, Daniel. "Transition Properties of f-electrons in Rare-earth Optical Materials." Doctoral thesis, Uppsala University, Condensed Matter Theory, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4014.

Full text

Abstract:

<p>The main purpose of this thesis is to theoretically study energy levels and intra-electronic transition intensities for various f-electron systems. The f-f electronic dipole transitions are parity-forbidden for a free ion but become non-zero when the ion is subject to a crystal-field. This is commonly described within the framework of Judd-Ofelt theory which accounts for the mixing of odd parity into the wave-functions.</p><p>Some refinements and quantitative studies have been made by applying many-body perturbation theory, or the perturbed functions approach, to obtain effective dipole ope

APA, Harvard, Vancouver, ISO, and other styles

18

Aull, Brian Francis. "The impact of ion-host interactions on the 5d-to-4f spectra of lanthanide rare earth ions." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/40343.

Full text

Abstract:

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.<br>Includes bibliographical references.<br>by Brian Francis Aull.<br>Ph.D.

APA, Harvard, Vancouver, ISO, and other styles

19

Jamison, Steven P. "Laser site-selective spectroscopy of rare-earth ions in crystals of the fluorite structure." Thesis, University of Canterbury. Physics, 1998. http://hdl.handle.net/10092/8172.

Full text

Abstract:

Site-selective laser spectroscopy, Zeeman infrared and optical absorption have been employed to investigate trivalent dysprosium centers in rare-earth doped alkaline-earth fluoride crystals. These studies have characterised the two dominant centers in SrF₂:Dy³⁺ which are determined to be the fluorine compensated C₄ᵥ and C₃ᵥ centers analogous to those observed in other SrF₂:RE³⁺ systems. The C₃ᵥ center is shown to correspond to the J-center of Sr₁:Er³⁺, rather than the B-center reported for SrF₂:Ho³⁺. In CaF₂:Dy³⁺ three single Dy³⁺ ion centers have been characterised, corresponding to the C₄ᵥ ,

APA, Harvard, Vancouver, ISO, and other styles

20

Nishi, Masayuki. "Studies on 4f-4f transition spectra of trivalent rare-earth ions in oxide materials." 京都大学 (Kyoto University), 2005. http://hdl.handle.net/2433/144882.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Yeung, Yau-yuen. "Alternative parametrization schemes in lanthanide crystal field theory /." [Hong Kong : University of Hong Kong], 1986. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12324863.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Andreev, Thomas. "Growth and optical properties of GaN and InGaN quantum dots dops with rare earth ions." Université Joseph Fourier (Grenoble), 2006. http://www.theses.fr/2006GRE10020.

Full text

Abstract:

Ce travail est porté sur les propriétés structurales et optiques de structures à boîtes quantiques III-nitrures dopées avec des terres rares réalisées par épitaxie à jets moléculaires. Pendant la croissance, les terres rares ont une influence drastique sur les boîtes, expliquée par les propriétés surfactantes des atomes de terres rares. La caractérisation optique et structurale montre que les boîtes sont dopées efficacement avec les ions de Eu, Tm et Tb. D'autres localisations des terres rares ont été trouvées, par exemple, pour le Tm, à l'interface du GaN des boîtes et de l'AlN. Ce travail s'

APA, Harvard, Vancouver, ISO, and other styles

23

蔡慶銘 and Hing-ming Michael Chua. "Transition intensities and energy transfer of lanthanide ions in crystals." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31211409.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Chua, Hing-ming Michael. "Transition intensities and energy transfer of lanthanide ions in crystals /." [Hong Kong : University of Hong Kong], 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13692689.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Cansin, Badan. "Microwave Assisted Synthesis Of Rare Earth Ions Doped Lanthanumorthoborate, Their Characterizations And Investigations Ofluminescence Properties." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614361/index.pdf.

Full text

Abstract:

Lanthanum orthoborate (LaBO3) has aroused interest of scientists for many decades because of their remarkable properties and potential applications. They provide favorable magnetic properties for various applications. Additionally, they possess high VUV transparency and exceptional optical damage when they compose with rare earth elements. This study comprises the synthesis of pure lanthanum orthoborate, europium, dysprosium and terbium doped lanthanum orthoborate by two methods with v three fuels, citric acid, glycine and urea. LaBO3 has already been synthesized by various methods, however<br

APA, Harvard, Vancouver, ISO, and other styles

26

Gonçalves, Tássia de Souza. "Rare earth doped fluorophosphate glass and glass-ceramics: structure-property relations." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-30102018-100600/.

Full text

Abstract:

Rare earth RE3+ doped fluorophosphates glasses and glass ceramics are among the most promising candidates for high efficiency laser generation in the near-infrared spectral region. Glass ceramics are polycrystalline materials of fine microstructure that are produced by the controlled crystallization (devitrification) of a glass. By developing fluorophosphate base glasses with appropriate compositions and by controlling crystal nucleation and growth in them, glass ceramics with special properties can be fabricated combining the advantages of fluorides (low phonon energy, low refractive indexes,

APA, Harvard, Vancouver, ISO, and other styles

27

Zafarullah, Ijaz. "Thulium ions in a yttrium aluminum garnet host for quantum computing applications material analysis and single qubit operations /." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/zafarullah/ZafarullahI0508.pdf.

Full text

Abstract:

Rare-earth-doped crystals have been used for optical signal processing and storage applications. In this dissertation, their potential for quantum computing applications is explored. In one quantum computing scheme, information is stored in nuclear spin states and this information is then processed by using optical pulses through the coupling of these nuclear spin states to a common electronic level. To implement this scheme, nuclear spin states and coupling of these nuclear spin states to a common electronic level is required. Preliminary work in rare-earth materials like Pr3+ and Eu3+ has sh

APA, Harvard, Vancouver, ISO, and other styles

28

楊友源 and Yau-yuen Yeung. "Alternative parametrization schemes in lanthanide crystal fieldtheory." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1986. http://hub.hku.hk/bib/B31231044.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Fraval, Elliot, and elliot fraval@gmail com. "Minimising the Decoherence of Rare Earth Ion Solid State Spin Qubits." The Australian National University. Research School of Physical Sciences and Engineering, 2006. http://thesis.anu.edu.au./public/adt-ANU20061010.124211.

Full text

Abstract:

[Mathematical symbols can be only approximated here. For the correct display see the Abstract in the PDF files linked below] This work has demonstrated that hyperfine decoherence times sufficiently long for QIP and quantum optics applications are achievable in rare earth ion centres. Prior to this work there were several QIP proposals using rare earth hyperfine states for long term coherent storage of optical interactions [1, 2, 3]. The very long T_1 (~weeks [4]) observed for rare-earth hyperfine transitions appears promising but hyperfine T_2s were only a few ms, comparable to rare earth opti

APA, Harvard, Vancouver, ISO, and other styles

30

De, Oliveira Lima Karmel. "Nanocristaux dopés par des ions terres rares pour des applications en information quantique." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066611/document.

Full text

Abstract:

Les cristaux dopés par des ions de terre rare (TR) apparaissent prometteurs pour des applications dans le traitement quantique de l'information. Parmi ces matériaux, les cristaux massifs d'Eu3+:Y2O3 présentent un long temps de cohérence optique (T2), un paramètre fondamental pour les technologies quantiques. Ce travail de thèse porte sur l'étude de ce système à l'échelle nanométrique, ce qui pourrait permettre de développer des systèmes hybrides dans lesquels les TR sont couplées à d'autres systèmes quantiques. Des nanocristaux de différentes tailles ont été élaborés par précipitation homogène

APA, Harvard, Vancouver, ISO, and other styles

31

Pignol, Charlotte. "Décohérence dans les cristaux Y₂SiO₅ dopés aux ions de terre rare." Electronic Thesis or Diss., Université Côte d'Azur, 2025. http://www.theses.fr/2025COAZ5006.

Full text

Abstract:

Ce travail vise à étudier les mécanismes à l'origine d'une perte de cohérence dans les cristaux d'orthosilicate d'yttrium dopés aux ions de terre, en vue de leur utilisation au sein de mémoires quantiques. L'approche utilisée est théorique et numérique, et se concentre sur trois ions dopants : europium, praséodyme et ytterbium. Les mémoires quantiques sont des éléments clefs des futurs réseaux de communication quantique. Ces dernières permettent en particulier d'étendre les distances sur lesquelles l'information quantique peut être propagée, par leur implication dans la conception de répéteurs

APA, Harvard, Vancouver, ISO, and other styles

32

Romanenko, Anton [Verfasser], Franz [Akademischer Betreuer] Fujara, and Christina [Akademischer Betreuer] Trautmann. "Radiation damage produced by swift heavy ions in rare earth phosphates / Anton Romanenko ; Franz Fujara, Christina Trautmann." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2016. http://d-nb.info/1126644269/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Carleschi, Emanuela. "Electronic structure of transition metal and rare earth ions in complex materials by resonant core-level spectroscopies." Doctoral thesis, Università degli studi di Trieste, 2009. http://hdl.handle.net/10077/3061.

Full text

Abstract:

2007/2008<br>In the course of this thesis I present an experimental investigation into various strongly correlated transition metal and rare earth compounds using core-level spectroscopic techniques, which have augmented the understanding of the electronic properties of these different systems. I will discuss the orbital occupation and the symmetry of the states near the Fermi level, responsible for the variety of ground states shown by a variety of strongly correlated systems such as misfit cobaltates, strontium ruthenates, metallic manganese and rare earth compounds.<br>XXI Ciclo<br>1978

APA, Harvard, Vancouver, ISO, and other styles

34

Lo, Tak-shing. "Two-body operators and correlation crystal field models /." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13437549.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Ribeiro, Cristina Tereza Monteiro. "Espectroscopia optica dos ions terras raras Er+3 e Gd+3 em vidros fluoroindatos." Universidade de São Paulo, 1996. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-06022014-110700/.

Full text

Abstract:

Este trabalho consiste na caracterização óptica dos íons terras raras Er+3, Yb+3 e Gd+3 quando em vidros fluoroindatos. As técnicas utilizadas foram: absorção óptica, luminescência e tempo de vida. Foram realizadas medidas de upconversion em vidros dopados com os íons Er+3 e Yb+3 nas concentrações de 2% mol de ErF3 e concentrações de 0, 2 e 8% mol de Yb+3 com excitação em 0.8 e 0.98&#956m observando as transições 2H11/2 &#8594 4I15/2 4S3/2 &#8594 4I15/2 (verde) e 4F9/2 &#8594 4I15/2 (vermelho). Como resultado verificou-se que o Yb+3 aumenta a eficiência da emissão por upconversion no vermelh

APA, Harvard, Vancouver, ISO, and other styles

36

Almotari, Masaed Moti M. "Fabrication and Characterisation of Zinc Oxide Thin Films Singly doped With Trace amounts of Rare Earth Materials." Thesis, University of Canterbury. Department of Physics and Astronomy, 2013. http://hdl.handle.net/10092/8441.

Full text

Abstract:

Two sets of nanostructured Zinc Oxide (ZnO) thin films doped with varying nominal concentrations of rare earth (RE) ions were prepared by pulsed laser deposition (PLD). One set was doped with europium ions (ZnO:Eu³⁺) while the other was doped with erbium ions (ZnO:Er³⁺). The nominal concentration of RE ions ranged from 0.025 to 5 atomic %. The produced films were structurally, morphologically and optically characterised using different techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL), combined excitation and emission spectroscopy (CEES) and

APA, Harvard, Vancouver, ISO, and other styles

37

De, Oliveira Lima Karmel. "Nanocristaux dopés par des ions terres rares pour des applications en information quantique." Electronic Thesis or Diss., Paris 6, 2015. http://www.theses.fr/2015PA066611.

Full text

Abstract:

Les cristaux dopés par des ions de terre rare (TR) apparaissent prometteurs pour des applications dans le traitement quantique de l'information. Parmi ces matériaux, les cristaux massifs d'Eu3+:Y2O3 présentent un long temps de cohérence optique (T2), un paramètre fondamental pour les technologies quantiques. Ce travail de thèse porte sur l'étude de ce système à l'échelle nanométrique, ce qui pourrait permettre de développer des systèmes hybrides dans lesquels les TR sont couplées à d'autres systèmes quantiques. Des nanocristaux de différentes tailles ont été élaborés par précipitation homogène

APA, Harvard, Vancouver, ISO, and other styles

38

盧德成 and Tak-shing Lo. "Two-body operators and correlation crystal field models." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31210922.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Ganesan, Parameshwari. "Investigation of Luminescent Properties in Rare-Earth free Metallophosphonate Hybrid Materials : structural Insights in photophysical studies." Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMC266.

Full text

Abstract:

Durant ce travail de thèse, les propriétés structurelles et photoniques des metallophosphonates luminescents hybrides ont été étudiées en abordant le rôle de leur structure dans les propriétés luminescentes. Les métallophosphonates possèdent différentes coordinations chimiques montrant leurs capacités à former plusieurs centres métalliques ainsi qu’une forte liaison chimique de type P-O-M. L’objective de ce travail est l’étude des matériaux hybrides organiques-inorganiques luminescents dont le composant organique offre une plateforme solide facilement amovible avec divers groupes fonctionnels.

APA, Harvard, Vancouver, ISO, and other styles

40

Kumar, Deepu [Verfasser], Plessen Gero [Akademischer Betreuer] von, and Thomas [Akademischer Betreuer] Taubner. "Influence of metal nanoparticles on the light emission properties of rare-earth ions / Deepu Kumar ; Gero von Plessen, Thomas Taubner." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/122169748X/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Katayama, Yumiko. "Optical and photo-electric studies on quantum cutting and persistent luminescent phosphors doped with rare-earth and transition-metal ions." Kyoto University, 2014. http://hdl.handle.net/2433/188818.

Full text

Abstract:

Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(人間・環境学)<br>甲第18380号<br>人博第693号<br>新制||人||166(附属図書館)<br>25||人博||693(吉田南総合図書館)<br>31238<br>京都大学大学院人間・環境学研究科相関環境学専攻<br>(主査)教授田部勢津久, 教授加藤立久, 教授杉山雅人, 教授森本芳則, 教授山本行男<br>学位規則第4条第1項該当

APA, Harvard, Vancouver, ISO, and other styles

42

Al-Ahmadi, Ahmad Aziz. "Fabrication and characterization of ZnO film by spray pyrolysis and ZnO polycrystalline sintered pellets doped with rear earth ions." Ohio : Ohio University, 2003. http://www.ohiolink.edu/etd/view.cgi?ohiou1175017625.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Jadwisieńczak, Wojciech M. "The luminescence properties of the wide bandgap nitrides doped with rare earth ions and gallium nitride doped with conventional isoelectronic impurities." Ohio : Ohio University, 2001. http://www.ohiolink.edu/etd/view.cgi?ohiou1179158888.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Guille, Antoine. "Étude de matériaux convertisseurs de fréquence appliqués au photovoltaïque." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10294.

Full text

Abstract:

Dans le but d'augmenter le rendement des cellules solaires tout en conservant des coûts modérés, de manière à les rendre compétitives face aux énergies fossiles, plusieurs solutions sont envisageables. L'une d'elles, que nous allons étudier dans ce travail, consiste à déposer une couche mince d'un matériau convertisseur de fréquence à l'avant d'une cellule photovoltaïque. Cette couche doit pouvoir convertir chaque photon de la gamme UV-bleu en deux photons infrarouges, capables chacun de générer une paire électron-trou. Cette étude porte sur la synthèse et la caractérisation d'un tel matériau

APA, Harvard, Vancouver, ISO, and other styles

45

Jadwisienczak, Wojciech M. "The Luminescence prosperties of the wide bandgap nitrides doped with rare earth ions and gallium nitride doped with conventional isoelectornic impurities." Ohio University / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1179158888.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Gao, Guojun [Verfasser], Doris [Akademischer Betreuer] Ehrt, and Lothar [Akademischer Betreuer] Wondraczek. "Tunable photoluminescence from rare earth and transition metal ions activated silicate glasses and glass ceramics / Guojun Gao. Gutachter: Doris Ehrt ; Lothar Wondraczek." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2014. http://d-nb.info/1048047180/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Vermillac, Manuel. "Nanoparticules dans les fibres optiques en silice dopées aux ions luminescents et leur évolution au cours de l’étirage." Thesis, Université Côte d'Azur (ComUE), 2017. http://www.theses.fr/2017AZUR4098/document.

Full text

Abstract:

Le développement de nouvelles fibres optiques en silice repose sur l’insertion des ions luminescents (ions de terres rares) dans des nanoparticules diélectriques. Dans ce contexte, la taille des particules est un paramètre clef qu’il convient de contrôler afin de bénéficier des nouvelles propriétés. Pour répondre à cet impératif, l’objectif de cette thèse était double. Premièrement, dans un objectif de structuration, il a été important d’étudier l’évolution des caractéristiques du matériau au cours de la fabrication, et deuxièmement, l’évolution des propriétés de luminescence avec les caractér

APA, Harvard, Vancouver, ISO, and other styles

48

Jambunathan, Venkatesan. "Infrared lasers based on ho3+:kre(wo4)2 crystals with tm3+or yb3+ as sensitizers." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/34762.

Full text

Abstract:

Laseres de estado sólido que operan en la región espectral de seguridad ocular alrededor de los 2 micrómetros (2µm) son de elevado interés en la actualidad debido a su potencial aplicación en los campos de la medicina, teledetección remota y como fuentes de bombeo en osciladores ópticos paramétricos (OPOs) para conversión en el infrarrojo medio. La transición láser en las 2 µm es posible en los iones de tulio (Tm) ligeramente por debajo de las 2 µm y en iones de holmio (Ho) ligeramente por encima de las 2 µm. La generación láser en iones de Tm es relativamente simple con la utilización de

APA, Harvard, Vancouver, ISO, and other styles

49

Koksel, Bahar. "The Use Of N-polyethereal Polypyrroles In Preconcentration And Surface Enhanced Raman Scattering Studies." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610495/index.pdf.

Full text

Abstract:

Polypyrroles containing polyether pseudocages (PI, PII, PIII) have been synthesized via chemical oxidation of 1,5-bis(1,1-pyrrole)-3-oxabutane (MI), 1,8- bis(1,1-pyrrole)-3,6-dioxahexane (MII), and 1,11-bis(1,1-pyrrole)- 3,6,9-trioxaundecane (MIII) using anhydrous FeCl3 in CHCl3. Because as obtained polymer resins did not give any response toward any cations, they were reduced (undoped) using chemical reducing agents. Tetrabutylammonium hydroxide (TBAOH) was found to be more effective in undoping to obtain more reproducible and reusable polymer resins. It was investigated whether the undoped p

APA, Harvard, Vancouver, ISO, and other styles

50

Sampaio, Jurací Aparecido. "Preparação e caracterização de vidros aluminato de cálcio com baixa concentração de sílica dopados com Nd2O3 e Er2O3." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-24062008-162022/.

Full text

Abstract:

O desenvolvimento de laseres de estado sólido compacto operando na região do infravermelho médio, entre 2 - 5 ?m, tem recebido considerável atenção nos últimos anos. Esses dispositivos oferecem grande potencial como fonte de luz para uma infinidade de aplicações, como por exemplo laseres para medicina e sensores químicos remotos. Laseres operando na região de 2.8 ?m tem interesse particular na medicina devido a forte banda de absorção da água nessa região espectral. Para se conseguir forte emissão laser próximo a 2.8 ?m têm sido investigadas famílias de vidros não-óxidos, como por exemplo vidr

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!