Spectroscopic investigation and optical characterization of novel highly thulium doped tellurite glasses

Gebavi, Hrvoje; Milanese, Daniel; Liao, Guihua; Chen, Qiuping; Ferraris, Monica; Ivanda, Mile; Gamulin, Ozren; Taccheo, S.

doi:10.1016/j.jnoncrysol.2009.01.016

Cited by 46 publications

(31 citation statements)

References 29 publications

(34 reference statements)

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“…The rare earth content and concentrations of the prepared glasses are shown in Table 1, together with their density, refractive index values and their main thermal properties, measured using DSC analysis (T g , T x ). Density and T g generally increased with increasing rare earth content, as previously observed [7] on Tm-doped tellurite glasses. T x values are also following a similar behavior, except for group III glasses, where a decrease in T x was observed.…”

Section: Glass Characterization: Thermal and Physical Propertiessupporting

confidence: 84%

“…2 and compared with data of our previous work on Tm-only doped tellurite glasses [7]. It is observed that the introduction of Yb 3+ ions inside the glass results in a decrease of refractive index, in a similar way to the introduction of Tm.…”

Section: Glass Characterization: Optical Propertiesmentioning

confidence: 70%

“…All decay curves were fitted exponentially. [7] as empty circles, group II glasses (TxY1 glasses where x = mol% Tm 3+ ion) and group III glasses (T4Y1, T4Y3 and T4Y5 glasses). Fig.…”

Section: Lifetime Decay Analyses Of Prepared Glassesmentioning

confidence: 99%

“…Tm 3+ is a suitable ion for emission at around 2 μm and recent research activities dealt with Tm-doped silica, fluoride and tellurite glasses and optical fibers [2][3][4][5][6][7]. Among possible glass hosts, tellurite glasses combine the lowest phonon energy among oxide glasses with the higher chemical stability towards non oxide glasses [8,9].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Tm3+ and Yb3+ co-doped tellurite glasses for short cavity optical fiber lasers: Fabrication and optical characterization

Milanese

Gebavi

Lousteau

et al. 2010

Journal of Non-Crystalline Solids

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Section: Glass Characterization: Thermal and Physical Propertiessupporting

confidence: 84%

Section: Glass Characterization: Optical Propertiesmentioning

confidence: 70%

“…All decay curves were fitted exponentially. [7] as empty circles, group II glasses (TxY1 glasses where x = mol% Tm 3+ ion) and group III glasses (T4Y1, T4Y3 and T4Y5 glasses). Fig.…”

Section: Lifetime Decay Analyses Of Prepared Glassesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tm3+ and Yb3+ co-doped tellurite glasses for short cavity optical fiber lasers: Fabrication and optical characterization

Milanese

Gebavi

Lousteau

et al. 2010

Journal of Non-Crystalline Solids

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“…Emission in the region of 2μm is possible through using Tm 3+ or Ho 3+ ions as activators [1][2][3]. A direct excitation of Tm 3+ ions from their ground state to the 3 H 4 level resulting from absorption of radiation, takes place at the maximum wavelength of 795 nm.…”

mentioning

confidence: 99%

Low-phonon tellurite glass co-doped with Tm3+/Ho3+ ions for optical fibre technology

Żmojda

Kochanowicz

Dorosz

2014

Photon. Lett. Poland

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Abstract-In) in the structure of thulium ions. However, in the case of Ho 3+ ions, a lack of high-power semiconductor diodes which would allow for effective excitation of this element is a significant problem. Therefore, it is necessary to apply sensibilisators in the form of Tm 3+ or Yb 3+ ions. They transit excitation energy, thus making it possible to produce emission at a wavelength of 2μm, corresponding to the 5 I 7 → 5 I 8 (Ho 3+) transition [4][5]. The selection of a suitable glass system is a key factor in obtaining efficient infrared emission. Tellurite glasses, which are characterised by low phonon energy (750cm -1 ) have important advantages over other common oxide glasses such as silicate (~1100cm -1 ) and germanate (~900cm -1 ). They possess good solubility of rare earth, high refractive index (~2) and good thermal stability [5]. In addition, their infrared transparency range is up to 5µm. Hence telluride glasses are attractive materials when considering the design of a tunable laser host in mid-IR. The present letter discusses the properties of active tellurite glasses from the perspective of optical fiber production. Co-doping with Tm 3+ /Ho 3+ ions allowed to establish systems of active dopants, and in consequence to present the results concerning broadband emission in the near infrared emission produced in the course of energy transfer between the ions of thulium and holmium. ions was melted from spectrally pure (99.99%) raw materials. The homogenized set was placed in a platinum crucible and melted in an electric furnace in a temperature of 900C for 30 minutes in an argon atmosphere. The molten glass was poured out onto a brass plate and then exposed to the process of annealing in a temperature approximate to that of transformation for 12 hours. Homogenous and transparent glasses were obtained without any visible effect of crystallization. In order to determine their spectral properties, a series of samples with dimensions of 10×10×2mm 3 were prepared. The glass density  was calculated using the method of hydrostatic weighing. The refractive index (at 633nm) was determined with the aid of a Metricon 2010 refractometer. The characteristic temperatures of the obtained glasses were calculated based on the measurement taken with a SETARAM Labsys thermal analyzer using the DSC (Differential Scanning Calorimetry) method. Infrared absorption spectra (FTIR) were measured with a DigilabFTS60v Fourier transform spectrometer in the range of 400-2000cm -1 with a resolution of 2cm -1 . The samples were pulverized and shaped in the form of KBr plates. Absorption spectra of rare-earth ions doped samples were determined using an Acton SpectraPro 2300i monochromator in the spectral range of 350-2200 nm. As for the luminescence spectra in the range of 1350-2300 nm, they were measured in the lock-in technique with an Acton SpectraPro 2300i spectrometer, using a high power laser diode (λ p =795nm) as a pump source. All the measurements were made in room temperature.Tellurite glasses are characterized by a hig...

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Single-Frequency Active Fiber Lasers

Yang

et al. 2019

Single-Frequency Fiber Lasers

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Spectroscopic investigation and optical characterization of novel highly thulium doped tellurite glasses

Cited by 46 publications

References 29 publications

Tm3+ and Yb3+ co-doped tellurite glasses for short cavity optical fiber lasers: Fabrication and optical characterization

Tm3+ and Yb3+ co-doped tellurite glasses for short cavity optical fiber lasers: Fabrication and optical characterization

Low-phonon tellurite glass co-doped with Tm3+/Ho3+ ions for optical fibre technology

Single-Frequency Active Fiber Lasers

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