Fabrication and optical properties of Y2O3-based ceramics with broad emission bandwidth

Bagayev, S. N.; Осипов, В. В.; Шитов, В. А.; Pestryakov, E. V.; Kijko, V.S.; Maksimov, R.N.; Lukyashin, K. E.; Orlov, A. N.; Polyakov, K. V.; Petrov, V. V.

doi:10.1016/j.jeurceramsoc.2012.07.006

Cited by 32 publications

(17 citation statements)

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“…One possible explanation of these facts is that trivalent Zr 3+ ions present in zir conia containing ceramics form additional chan nels of laser level quenching, e.g., via dipole-dipole interaction. This hypothesis is confirmed by a decrease in the effective lifetime of the upper laser level of Nd 3+ ion in ceramics with a composition of [(Nd 0.01 Y 0.99 ) 2 O 3 ] 0.88 (ZrO 2 ) 0.12 as compared to that in the analogous zirconia free ceramics [9]. However, to the best of the authors' knowledge, no data were reported on the possible presence of trivalent zirco nium and hafnium ions in high transparency yttria based ceramics with additives of these elements.…”

mentioning

confidence: 68%

“…These ceramics are promising materials for the active media of lasers generating ultrashort radiation pulses. In particular, it was shown [8,9] ) 0.12 as compared to that in the analogous zirconia free ceramics [9]. However, to the best of the authors' knowledge, no data were reported on the possible presence of trivalent zirco nium and hafnium ions in high transparency yttria based ceramics with additives of these elements.…”

mentioning

confidence: 94%

“…These ceramics are promising materials for the active media of lasers generating ultrashort radiation pulses. In particular, it was shown [8,9] [9], but the optical effi ciency was lower than that in zirconia free ceramics of (Yb 0.01 Y 0.99 ) 2 O 3 [10]. One possible explanation of these facts is that trivalent Zr 3+ ions present in zir conia containing ceramics form additional chan nels of laser level quenching, e.g., via dipole-dipole interaction.…”

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confidence: 99%

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Trivalent zirconium and hafnium ions in yttria-based transparent ceramics

et al. 2013

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During the synthesis of ceramics based on Y 2 O 3 (yttria), it is common practice to use dioxides of tet ravalent ions (ThO 2 , ZrO 2 , HfO 2 ) as sintering addi tives, which simultaneously favor an increase in the transparency of ceramics. In particular, Yttralox-a ceramic material created by General Electric Co. (United States)-consists of 90 mol % Y 2 O 3 and 10 mol % ThO 2 and is close to glass with respect to transmission in the visible spectral range [1]. Russian specialists [2,3] have developed a technology of yttria based ceramics with additives of 10 mol % ZrO 2 or HfO 2 , which are characterized by a transmission of 86 or 82%, respectively, at a wavelength of 6 μm. These ceramics are used in bulbs for high pressure lamps of elevated brightness. Ceramics activated by rare earth ions can also be used as active elements of solid state lasers. Highly transparent modified Yttralox ceramics (Y 2 O 3 with additives of 10 mol % ThO 2 and 1 mol % Nd 2 O 3 ) [4] was used to create the first polycrystalline ceramic lasers [5], although their efficiency was relatively low. Investigations aimed at creating more effective laser ceramics were continued, and new yttria based com positions with ZrO 2 and HfO 2 additives were created [6][7][8]. It was found [7] that the optimum ZrO 2 content in these ceramics for highly effective lasing is about 3 mol %. However, it was a priori believed that additive metal ions (Th, Zr, Hf) occur in the lattice in tetrava lent states not forming centers of luminescence and absorption.In recent years, ZrO 2 and HfO 2 additives have been introduced into yttria activated by rare earth ions in order to produce disordering of the crystal structure of ceramic grains, which ensures broadening of the amplification band of activator ions. These ceramics are promising materials for the active media of lasers generating ultrashort radiation pulses. In particular, it was shown [8,9] ) 0.12 as compared to that in the analogous zirconia free ceramics [9]. However, to the best of the authors' knowledge, no data were reported on the possible presence of trivalent zirco nium and hafnium ions in high transparency yttria based ceramics with additives of these elements.The aim of the present work was to use the electron paramagnetic resonance (EPR) method for determin ing the presence of trivalent zirconium and hafnium ions in high transparency yttria based ceramics.

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confidence: 68%

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confidence: 94%

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confidence: 99%

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Trivalent zirconium and hafnium ions in yttria-based transparent ceramics

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“…В работе [7] показано, что наиболее существенное увеличение ширины полосы усиления лазерного перехода достигается при введении гетеровалентных добавок. Однако наличие таких добавок приводит к снижению эффективности генерации лазерного излучения или к ее прекращению [7,8]. В настоящей работе исследовались возможные каналы потерь усиления стимулированного излучения на лазерных переходах ионов неодима и иттербия в керамиках с гетеровалентными добавками.…”

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“…Добавление ZrO 2 или HfO 2 приводит к уширению данных полос люминесценции на 3-5 нм. Например, максимальная ширина полосы люминесценции иона неодима достигает 36 нм [8].…”

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Laser ceramics with disordered crystalline structure

2015

PMTF

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Синтезированы новые керамические среды на основе оксида иттрия Y 2 O 3 с изовалентными (Yb 2 O 3 , Nd 2 O 3 , Lu 2 O 3) и гетеровалентными (ZrO 2 , HfO 2) компонентами и исследованы их спектроскопические свойства. Изучены возможные каналы потерь усиления стимулированного излучения на излучательных переходах ионов Nd 3+ и Yb 3+ в керамиках с гетеровалентными добавками. Приведены результаты измерений в Y 2 O 3-керамике, допированной оксидами циркония и гафния, ширины полос излучений и времени жизни уровней 4 F 3/2 и 2 F 5/2 ионов Nd 3+ и Yb 3+ соответственно. Показано, что безызлучательное расселение уровня 4 F 3/2 иона неодима происходит в результате диполь-дипольного взаимодействия с ионами Zr 3+ и Hf 3+. На керамике [(Yb 0,01 Lu 0,24 Y 0,75) 2 O 3 ] 0,88 (ZrO 2) 0,12 с разупорядоченной кристаллической структурой осуществлена генерация лазерного излучения на длине волны 1034 нм с дифференциальной эффективностью 29 %. Ключевые слова: лазерная керамика, оксид иттрия, оксид циркония, оксид гафния, ионы неодима, ионы иттербия. Работа выполнена при финансовой поддержке УрО РАН (коды проектов 12-П-2-1011, 12-C-2-1018), СО РАН (проект № 90) и Российского фонда фундаментальных исследований (код проекта 14-08-00181).

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Optical properties of ytterbium‐doped yttrium oxide ceramics

Solomonov

Осипов

Шитов

et al. 2016

Physica Status Solidi (a)

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Ytterbium‐doped yttrium oxide (Yb:Y2O3) transparent ceramics with different sintering additives (Lu2O3, Sc2O3, CeO2, ZrO2, or HfO2) were fabricated using nanopowders produced by laser ablation. Transmission and photoluminescence spectra of the obtained ceramics were investigated at room temperature. Highest in‐line transmittance was over 80% at the wavelength of 1060 nm for 2 mm thick Yb:Y2O3 ceramics with zirconium and hafnium. Divalent Yb ions with the ground state electron configuration 4f136s were revealed. The absorption and emission bands caused by s↔s transitions of these ions were observed in the IR spectral range of Yb3+ ions. The superposition of both Yb3+ and Yb2+ emission bands leads to an effective broadening of the whole luminescence band.

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Fabrication and optical properties of Y2O3-based ceramics with broad emission bandwidth

Cited by 32 publications

References 11 publications

Trivalent zirconium and hafnium ions in yttria-based transparent ceramics

Trivalent zirconium and hafnium ions in yttria-based transparent ceramics

Laser ceramics with disordered crystalline structure

Optical properties of ytterbium‐doped yttrium oxide ceramics

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