Abstract
Conventional ceramic processing techniques do not produce ultrafine-grained materials. However, since the mechanical and optical properties are highly dependent on the grain size, advanced processing techniques are needed to obtain ceramics with a grain size smaller than the wavelength of visible light for new laser sources. As an empirical study for lasing from an ultrafine-grained ceramics, transparent Yb3+:Y2O3 ceramics with several doping concentrations were fabricated by spark plasma sintering (SPS) and their microstructures were analyzed, along with optical and spectroscopic properties. Laser oscillation was verified for 10 at.% Yb3+:Y2O3 ceramics. The laser ceramics in our study were sintered without sintering additives, and the SPS produced an ultrafine microstructure with an average grain size of 261 nm, which is about one order of magnitude smaller than that of ceramics sintered by conventional techniques. A load was applied during heating to enhance densification, and an in-line transmittance near the theoretical value was obtained. An analysis of the crystal structure confirmed that the Yb3+:Y2O3 ceramics were in a solid solution. To the best of our knowledge, this study is the first report verifying the lasing properties of not only ultrafine-grained but also Yb-doped ceramics obtained by SPS.
| Original language | English |
|---|---|
| Pages (from-to) | 694-702 |
| Number of pages | 9 |
| Journal | Journal of the American Ceramic Society |
| Volume | 101 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2018 Feb 1 |
| Externally published | Yes |
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Keywords
- lasers
- optical materials/properties
- spark plasma sintering
- transparent ceramics
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
Cite this
Transparent ultrafine Yb3+:Y2O3 laser ceramics fabricated by spark plasma sintering. / Furuse, Hiroaki; Nakasawa, Shunsuke; Yoshida, Hidehiro; Morita, Koji; Suzuki, Tohru; Kim, Byung Nam; Sakka, Yoshio; Hiraga, Keijiro.
In: Journal of the American Ceramic Society, Vol. 101, No. 2, 01.02.2018, p. 694-702.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Transparent ultrafine Yb3+:Y2O3 laser ceramics fabricated by spark plasma sintering
AU - Furuse, Hiroaki
AU - Nakasawa, Shunsuke
AU - Yoshida, Hidehiro
AU - Morita, Koji
AU - Suzuki, Tohru
AU - Kim, Byung Nam
AU - Sakka, Yoshio
AU - Hiraga, Keijiro
PY - 2018/2/1
Y1 - 2018/2/1
N2 - Conventional ceramic processing techniques do not produce ultrafine-grained materials. However, since the mechanical and optical properties are highly dependent on the grain size, advanced processing techniques are needed to obtain ceramics with a grain size smaller than the wavelength of visible light for new laser sources. As an empirical study for lasing from an ultrafine-grained ceramics, transparent Yb3+:Y2O3 ceramics with several doping concentrations were fabricated by spark plasma sintering (SPS) and their microstructures were analyzed, along with optical and spectroscopic properties. Laser oscillation was verified for 10 at.% Yb3+:Y2O3 ceramics. The laser ceramics in our study were sintered without sintering additives, and the SPS produced an ultrafine microstructure with an average grain size of 261 nm, which is about one order of magnitude smaller than that of ceramics sintered by conventional techniques. A load was applied during heating to enhance densification, and an in-line transmittance near the theoretical value was obtained. An analysis of the crystal structure confirmed that the Yb3+:Y2O3 ceramics were in a solid solution. To the best of our knowledge, this study is the first report verifying the lasing properties of not only ultrafine-grained but also Yb-doped ceramics obtained by SPS.
AB - Conventional ceramic processing techniques do not produce ultrafine-grained materials. However, since the mechanical and optical properties are highly dependent on the grain size, advanced processing techniques are needed to obtain ceramics with a grain size smaller than the wavelength of visible light for new laser sources. As an empirical study for lasing from an ultrafine-grained ceramics, transparent Yb3+:Y2O3 ceramics with several doping concentrations were fabricated by spark plasma sintering (SPS) and their microstructures were analyzed, along with optical and spectroscopic properties. Laser oscillation was verified for 10 at.% Yb3+:Y2O3 ceramics. The laser ceramics in our study were sintered without sintering additives, and the SPS produced an ultrafine microstructure with an average grain size of 261 nm, which is about one order of magnitude smaller than that of ceramics sintered by conventional techniques. A load was applied during heating to enhance densification, and an in-line transmittance near the theoretical value was obtained. An analysis of the crystal structure confirmed that the Yb3+:Y2O3 ceramics were in a solid solution. To the best of our knowledge, this study is the first report verifying the lasing properties of not only ultrafine-grained but also Yb-doped ceramics obtained by SPS.
KW - lasers
KW - optical materials/properties
KW - spark plasma sintering
KW - transparent ceramics
UR - http://www.scopus.com/inward/record.url?scp=85036463923&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85036463923&partnerID=8YFLogxK
U2 - 10.1111/jace.15232
DO - 10.1111/jace.15232
M3 - Article
AN - SCOPUS:85036463923
VL - 101
SP - 694
EP - 702
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 2
ER -