Optical fibers based on special pure Ge20Se80 and Ge26As17Se25Te32 glasses for FEWS

Velmuzhov, А.P.; Суханов, М. В.; Kotereva, Т.V.; Zernova, N.S.; Shiryaev, V.S.; Karaksina, E.V.; Stepanov, B.S.; Чурбанов, М. Ф.

doi:10.1016/j.jnoncrysol.2019.04.043

Cited by 20 publications

(16 citation statements)

References 23 publications

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“…Оптическая накачка стекол, легированных Tb 3+ , обычно производится в полосе поглощения с λ = 2 µm, а инфракрасная люминесценция возникает с уровней 7 диапазоне в полосах поглощения с λ ≈ 0.8 [18], 0.9, 1.1 и 1.3 µm [19], а люминесценция наблюдается на длинах волн 3.2 и 4.6 µm. В ХС, легированных Tb 3+ и Dy 3+ , имеются и другие излучательные переходы на больших длинах волн в среднем ИК [8], которые не показаны на рис.…”

Section: результаты измеренийunclassified

“…В объемных образцах ХС, легированных ионами Tb 3+ , Pr 3+ и Ce 3+ [4], и в халькогенидных световодах, легированных Tb 3+ [5,6], продемонстрирована лазерная генерация в области длин волн 5−5.5 µm. На основе халькогенидного световода, легированного Pr 3+ , создан люминесцентный источник на длинах волн 4.0−5.5 µm, который прошел успешное тестирование в волоконнооптической сенсорной системе [7].…”

Section: Introductionunclassified

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Оптические свойства халькогенидных стекол системы Ga-Ge-Sb-Se, легированных ионами тербия и диспрозия, вблизи края полосы фундаментального поглощения

Кузюткина¹,

Паршина²,

Романова³

et al. 2023

Оптика И Спектроскопия

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In the paper, results of measurements of the optical response of chalcogenide glasses of the Ga5Ge20Sb10Se65 composition doped with rare-earth ions Tb3+ or Dy3+, in the wavelength range of 0.7 – 1.5 μm by the method of IR spectroscopy are presented. Parameters characterizing the fundamental absorption band edge of the glasses - optical bandgap energy, Urbach tail parameter and weak absorption tail parameter - have been evaluated. It has been found that doping in low concentrations (up to 0.3 mass%) does not influence the optical bandgap energy and optical properties of the glasses in the range of the Urbach tail, but in the range of the weak absorption tail, optical response of the glasses depends on the activator concentration. Crystallization of the glasses produced by the direct melting method also depends on the activator concentration. In the glasses doped with Dy3+, absorption bands of the ion are located in the range of the weak absorption tail of the glass that makes possible energy transfer between the ions and the gap states of the charge carriers.

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Section: результаты измеренийunclassified

Section: Introductionunclassified

Оптические свойства халькогенидных стекол системы Ga-Ge-Sb-Se, легированных ионами тербия и диспрозия, вблизи края полосы фундаментального поглощения

Кузюткина¹,

Паршина²,

Романова³

et al. 2023

Оптика И Спектроскопия

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“…This detection configuration is similar to fiber evanescent-wave spectroscopy (FEWS) sensors, which are based on the interactions between an analyte and the evanescent field of the guided mode from a straight or bent fiber or taper. [25][26][27] The experimental setup used for our proof-of-principle experiment is depicted in Figure 6a. A home-made fiber supercontinuum (SC) source is used as a wideband infrared light source for spectroscopic investigations.…”

Section: Evanescent-wave Probing Of Liquidsmentioning

confidence: 99%

Evolutive Optical Fibers Combining Oxide and Chalcogenide Glasses with Submicronic Polymer Structures

Strutynski

Deroh

Evrard

et al. 2022

Advanced Photonics Research

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Multimaterial optical fibers combining tellurite with chalcogenide glasses and featuring thin polymer structures are fabricated via the thermal drawing process. It is demonstrated that micrometric polyethersulfone films can be embedded within larger elongated tellurite/chalcogenide glass architectures. Taking advantage of the strong chemical reactivity contrasts which exist in the considered fiber geometries, a quasi‐exposed‐core waveguide is obtained by selective etching of the glass cladding. The potential of the postprocessed fiber structure is then assessed through evanescent‐wave probing of liquids and numerical investigations are carried out to establish the device performances as function of selected optogeometric parameters. Those results open the way for the development of evolutive photonic objects benefiting from postdrawing processing of multimaterial fibers.

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“…Rare-earth element (REE)-doped chalcogenide glass fibers are suitable materials for mid-IR sources because they exhibit intense broadband mid-IR luminescence [33,34] and lasing, which we recently demonstrated for the first time in the Tb(3+)-doped chalcogenide glass fiber at 5.38 µm wavelength [35]. The use of emission sources makes it possible to create an all-fiber sensor scheme for substance detection by studying the vibrational modes of some bonds (for example, C-H, C-O, S-H, C-S, N-O, C-Cl [25,[36][37][38][39]) to identify chemical compounds. Fiber sensors based on REE-doped chalcogenide glasses were tested for detection of CO 2 and chloroform [36][37][38][39].…”

Section: Introductionmentioning

confidence: 99%

“…One of the ways to improve the sensitivity is to change the sensor geometry for increasing the path of radiation penetration into the analyzed sample [23]. For this purpose, the sensing element is made in the form of one or more loops [24][25][26], in the form of a tapered fiber [27,28], or in the form of a side-polished chalcogenide fiber [29,30].…”

Section: Introductionmentioning

confidence: 99%

Recent Achievements in Development of Chalcogenide Optical Fibers for Mid-IR Sensing

Shiryaev

Velmuzhov

Kotereva

et al. 2023

Fibers

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Recent results of research of passive and active optical waveguides made of high-purity chalcogenide glasses for middle infrared fiberoptic evanescent wave spectroscopy of liquid and gaseous substances are presented. On the basis of selenide and telluride glass fibers, novel types of highly sensitive fiber probes are developed. On the basis of Pr(3+)- and Tb(3+)-doped Ga(In)-Ge-As-Se and Ga-Ge-Sb-Se glass fibers, the 4.2–6 μm wavelength radiation sources are created for all-fiber sensor systems. Successful testing of chalcogenide glass fiber sensors for the analysis of some liquid and gaseous mixtures was carried out.

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Optical fibers based on special pure Ge20Se80 and Ge26As17Se25Te32 glasses for FEWS

Cited by 20 publications

References 23 publications

Оптические свойства халькогенидных стекол системы Ga-Ge-Sb-Se, легированных ионами тербия и диспрозия, вблизи края полосы фундаментального поглощения

Оптические свойства халькогенидных стекол системы Ga-Ge-Sb-Se, легированных ионами тербия и диспрозия, вблизи края полосы фундаментального поглощения

Evolutive Optical Fibers Combining Oxide and Chalcogenide Glasses with Submicronic Polymer Structures

Recent Achievements in Development of Chalcogenide Optical Fibers for Mid-IR Sensing

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