Upconversion luminescence in Ho3+/Yb3+- and Tb3+/Yb3+-codoped fluorogermanate glass and glass ceramic

Gouveia‐Neto, A. S.; Bueno, Luciano A.; Afonso, A. C. M.; Nascimento, Jehan Fonsêca do; Costa, Edbhergue Ventura Lola; Messaddeq, Younès; Ribeiro, Sidney José Lima

doi:10.1016/j.jnoncrysol.2007.07.055

Cited by 38 publications

(13 citation statements)

References 36 publications

(43 reference statements)

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“…The great interest in frequency upconversion materials mainly because a visible laser source pumped by a NIR laser would be useful for high capacity data storage optical devices, bar-code reading, submarine communications, laser printing, biotechnology, biomedical instruments, three-dimensional displays, remote sensing thermometers for high-temperature application, etc. [5][6][7][8][9][10][11][12][13][14]. Triply ionized Er 3+ , Ho 3+ , Tm 3+ , Nd 3+ ions of the lanthanide series have been most widely studied for upconversion processes in various glass hosts [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Infrared-to-red upconversion luminescence in samarium-doped antimony glasses

Som

Karmakar

2008

Journal of Luminescence

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Section: Introductionmentioning

confidence: 99%

Infrared-to-red upconversion luminescence in samarium-doped antimony glasses

Som

Karmakar

2008

Journal of Luminescence

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“…What is more, maximum photon energy of 780 cm −1 along with high refractive index n ∼ 2 increase the likelihood of non-linear phenomena [43]. Keeping that in mind, an excellent alternative for tellurite glasses are germanium-based glasses [44]. Due to their high spectral transmission and low phonon energy (900 cm −1 ), they facilitate effective conversion of excitation energy.…”

Section: Active Optical Fibres For Application In Laser and Broadbandmentioning

confidence: 99%

Active optical fibres for application in laser and broadband ASE sources

Dorosz¹,

Dorosz²,

Zając³

et al. 2012

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. The article brings into focus the present state of technology employing active fibres doped with rare earth (RE) ions for applications requiring power supply of several dozen watts and broadband ASE sources. Current trends in development of glasses and in construction of active fibres used in fibre sources of radiation within VIS-NIR range are presented. Technological constraints in the doping of fibre core glasses are discussed, with particular consideration of optimal RE concentration for technical applications. Characteristics of glasses are offered, and the glasses are used for manufacturing optical fibres with luminescence within the visible as well as near-and mid-infrared ranges. Also, requirements and luminescence properties concerning glasses co-doped with e.g. Nd 3+ /Yb 3+ ,Tm 3+ /Ho 3+ and Yb 3+ /Tb 3+ are discussed. Results of research on the impact of technological parameters of glass matrices on luminescence properties of core glasses and optical fibres are quoted. For the doped glasses of which luminescence in a wide spectral range is desired, conditions for their processing into optical fibre systems are mentioned. Additionally, the impact of phonon energy in the glass on producing emission in a specified spectral range is analyzed. Furthermore, the article presents directions of technological studies to solve problems persisting in the phase of glass matrix design, as well as in determining the influence of fibre drawing process on the luminescence properties of core glasses and optical fibres, confirming the differences in luminescence stemming from the drawing process. Finally, some original designs of core glasses and active multicore fibre systems devised for construction of fibre radiation sources are presented.

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“…The three emission bands centering around 545, 658 and 754 nm wavelengths are assigned to the 5 F 4 + 5 S 2 -5 I 8 , 5 F 5 -5 I 8 and 5 F 4 + 5 S 2 -5 I 7 transitions, respectively. In general, for Ho 3 + /Yb 3 + doped fluoride glass systems, such as fluoroindate [36], fluorogermanate [37] and fluorozircoaluminate glasses [38], the green upconversion emission plays a dominant role in luminescence color, which is next to pure green. However, in the case of sample II the red fluorescence intensity is almost as high as that of the green emission under 974 nm wavelength laser radiation, resulting in a greenish-yellow color to the human eyes, as shown in the inserted photo of Fig.…”

Section: Green and Red Upconversion Emission Of Ho 3 + Ionmentioning

confidence: 99%