IR transmission and emission spectra of erbium ions in fluoroindate glass

Pisarska, Joanna

doi:10.1016/j.jnoncrysol.2004.08.048

Cited by 19 publications

(5 citation statements)

References 17 publications

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“…ID-INFRARED (MIR) emitting sources have attracted much interest during the last years, especially thanks to their multiple potential application such as fast communications, medical diagnostics and therapy, environmental monitoring, and sensing [1][2][3][4][5][6][7][8][9][10]. These lasers can be designed and fabricated considering different fiber glasses, including chalcogenide and fluoride ones, doped or co-doped with different rareearth ions, as thulium, holmium, dysprosium, erbium, neodymium, and praseodymium, for emission at different wavelengths [11][12][13][14][15][16][17][18][19][20]. In particular, fluoroindate fibers exhibit high transparency in the 3 − 5 𝜇𝑚 range, where many air pollutants and biomolecules exhibit light absorption peaks.…”

Section: Introductionmentioning

confidence: 99%

Design of a Mid-IR Laser Based on a Ho:Nd-codoped Fluoroindate Fiber

Loconsole

Falconi

Annunziato

et al. 2023

J. Lightwave Technol.

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In this work, a novel mid-infrared continuous wave laser, based on a fluoroindate fiber co-doped with holmium and neodymium, is designed to emit at 𝝀 𝒔 = 𝟑. 𝟗𝟐 𝝁𝒎, when pumped at 𝝀 𝒑 = 𝟖𝟎𝟖 𝒏𝒎. The laser is modeled considering a nine-level system, by taking into account experimental spectroscopical parameters. Since the energy transfer coefficients are unknown, they have been evaluated starting from the measured emission spectra of the bulk glass, reported in literature, and comparing their ratio with respect to the ratio between the simulated signal gain coefficients. The designed laser promises higher slope efficiency and power threshold lower than those obtainable with a holmium-heavilydoped fiber, having same fiber section geometry, same refractive indices and pumped at 𝝀 𝒑 = 𝟖𝟖𝟖 𝒏𝒎. Slope efficiency 𝜼 = 𝟏𝟔. 𝟔𝟕% and input power threshold 𝑷 𝒕𝒉 = 𝟎. 𝟐 𝑾 are obtained for the fiber length 𝑳 𝒇𝒊𝒃𝒆𝒓 = 𝟎. 𝟒 𝒎, dopants concentrations 𝑵 𝑯𝒐 = 𝟖 × 𝟏𝟎 𝟐𝟔 𝒊𝒐𝒏𝒔/𝒎 𝟑 and 𝑵 𝑵𝒅 = 𝟏 × 𝟏𝟎 𝟐𝟔 𝒊𝒐𝒏𝒔/𝒎 𝟑 , and output mirror reflectivity 𝑹 𝒐𝒖𝒕 = 𝟔𝟎%. This result encourages the fabrication of a continuous wave laser based on a Ho:Nd-codoped fluoroindate fiber.

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Section: Introductionmentioning

confidence: 99%

Design of a Mid-IR Laser Based on a Ho:Nd-codoped Fluoroindate Fiber

Loconsole

Falconi

Annunziato

et al. 2023

J. Lightwave Technol.

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“…The doping of TZLNB glasses with other network formers, such as tellurium dioxide (TeO2), can offer additional modification of their physical properties. Tellurite containing glasses have recently gained wide attention because of their potential as hosts of rare earth elements for the development of fibers and lasers covering all the main telecommunication bands and promising materials for optical switching devices [5,6]. Further, tellurite containing glasses also exhibit a range of unique properties for potential applications as pressure sensors or new laser hosts [7].…”

Section: Introductionmentioning

confidence: 99%

Structural, Dielectric and AC Conductivity Behavior of Multicomponent TeO2-ZnO-Li2O-Na2O-B2O3 Glasses

Shruthi¹,

Madhu²

2021

J. Nano- Electron. Phys.

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Multicomponent glasses of the TeO2-ZnO-Li2O-Na2O-B2O3 (TZLNB) system have been prepared by conventional melt quenching method. Synthesized glasses were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR), Raman and UV-Visible spectroscopic techniques. The amorphous nature of these glasses has been confirmed by their XRD pattern. In the present TZLNB glass, B2O3 is found to transform into a complex network, which involves a boroxol ring coupled with a fourfold-coordinated boron (BO4) due to non-bridging oxygens. The frequency dependences of dielectric constant (ε′), dielectric loss tangent (tanδ) and ac conductivity (ac) studies have been undertaken on the TZLNB glasses in the frequency range 50 Hz-5 MHz at room temperature. Dielectric properties such as dielectric constant and dielectric loss tangent are found to decrease with increasing frequency. Present TZLNB glasses are found to possess high dielectric constant and very low dielectric loss in the studied frequency range. Further, ac conductivity is found to increase with increasing frequency due to an increased density of mobile ions for conduction. Present TZLNB glasses possess excellent dielectric properties such as high dielectric constant and very low dielectric loss and thought to be the most promising dielectric material for the memory cell capacitors in dynamic random-access memory (DRAM) chips.

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“…Tellurate glasses have recently gained wide attention because of their potential as hosts of rare earth elements for the development of fibres and lasers covering all the main telecommunication bands [1] and promising materials for optical switching devices [2].…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical studies of the structure of tellurate-borate glasses network

2010

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The structural properties of the xTeO2*(1-x)B2O3 glasses (x=0.6; 0.7) were investigated by FT-IR spectroscopy. From the analysis of the FTIR spectra it is reasonable to assume that by increasing of boron ions content, the tetrahedral [BO4] units are gradually replaced by trigonal [BO3] units. The increase in the number of non-bridging oxygen atoms would decrease the connectivity of the glass network and will yield the depolymerization of the borate chains. The molecular structure and vibrational frequencies of the proposed structural models have been studied by exploring of the density functional theory (DFT) calculations. The FTIR spectra of the xTeO2*(1-x)B2O3 vitreous systems were compared with the calculated spectrum. This procedure allowed us to assign most of the observed IR bands.Response to Reviewers: Journal of Molecular Modeling Title: Experimental and theoretical studies of the structure of tellurate-borate glasses network Authors: S. Rada, E. Culea, M. Neumann Dear Sir, Thank you for the comments made by you and the referees on our manuscript. Taking into account these observations we operated the following modifications:Reviewers'comments:Reviewer #1: Authors have studied the structural properties of xTeO2*(1-x)B2O3 (x=0.6; 0.7) glassy network at the both experimental and theoretical methods. On the experimental parts authors have used FTIR technique to record the vibrational frequencies and the B3PW91/3-21G level of theoretical calculation to interpret the experimental vibrational modes. Although, the choice of the basis set is poor, but for the size of the considered system in the investigation the basis set can be acceptable. In fact, the theoretical calculation has predicted the IR spectrum which is in good agreement with experimental results. This work clearly shows that, whenever possible, the application of both the experimental and theoretical methods is best route to interpret complex structures. This is well written manuscript and can be accepted for publication in JMM. AuthorsWe are grateful to the referent for the extremely useful comments.Reviewer #2: 1. The manuscript entitled "A theoretical model for binary 0.6TeO2.0.4B2O3 glassy network" by S.Rada, E. Culea, M. Neumann is a combined experimental and theoretical study of the binary compound of glass. The title of this paper seems to be not very appropriate since the study involves both experiment and theory. Authors 1. We agree the suggestion of the Reviewer and in this view we changed the title of this paper by "Experimental and theoretical studies of the structure of tellurate-borate glasses network".Reviewer #2:2. Although two compounds have been characterized using FT-IR, only one compound was investigated theoretically. What happened to the other compound 0.7TeO2.0.3B2O3? Authors 2. We added our results on the 0.7TeO2.0.3B2O3 glassy network. Reviewer #2:3. Figure 3 shows complimentarily between experiment and theory. However, I suggest authors to provide the characteristic experimental IR frequencies that are useful to ...

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IR transmission and emission spectra of erbium ions in fluoroindate glass

Cited by 19 publications

References 17 publications

Design of a Mid-IR Laser Based on a Ho:Nd-codoped Fluoroindate Fiber

Design of a Mid-IR Laser Based on a Ho:Nd-codoped Fluoroindate Fiber

Structural, Dielectric and AC Conductivity Behavior of Multicomponent TeO2-ZnO-Li2O-Na2O-B2O3 Glasses

Experimental and theoretical studies of the structure of tellurate-borate glasses network

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