神戸大学附属図書館デジタルアーカイブ
https://hdl.handle.net/20.500.14094/0100477743

このアイテムのアクセス数:27件（2024-04-16 22:11 集計）

閲覧可能ファイル 

ファイル フォーマット サイズ 閲覧回数 説明
0100477743 (fulltext) pdf 959 KB 22

メタデータ

ファイル出力

メタデータID
0100477743
アクセス権
open access
出版タイプ
Version of Record
タイトル
Yb-doped yttrium aluminum perovskite for radiation balanced laser application
著者
Nakayama, Yuta ; Harada, Yukihiro ; Kita, Takashi
著者名
Nakayama, Yuta
著者ID
A0963
研究者ID
1000010554355
ORCID
0000-0003-4784-6751
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=c641b750fb455c8a520e17560c007669
著者名
Harada, Yukihiro
原田, 幸弘
ハラダ, ユキヒロ
所属機関名
工学研究科
著者ID
A0491
研究者ID
1000010221186
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=7853123c7c766d89520e17560c007669
著者名
Kita, Takashi
喜多, 隆
キタ, タカシ
所属機関名
工学研究科
収録物名
Proceedings Volume 11702, Photonic Heat Engines: Science and Applications III
巻(号)
11702
ページ
117020K
出版者
Society of Photo-Optical Instrumentation Engineers (SPIE)
刊行日
2021-04-01
公開日
2022-12-06
抄録
Radiation balanced laser (RBL) can be realized by managing the cooling process via the anti-Stokes photoluminescence (PL), the small-signal gain, and the heating processes including the Stokes shifts and the multi-phonon relaxation. Yttrium aluminum perovskite (YAP) shows lower phonon energy than yttrium aluminum garnet (YAG) which the radiation balanced laser was demonstrated. According to the single-frequency phonon model, the low maximum phonon energy of YAP makes the multi-phonon relaxation probability of Yb-doped YAP [(Yb:Y)AP] smaller than Yb-doped YAG [(Yb:Y)AG]. The low multi-phonon relaxation probability of YAP suggests that (Yb:Y)AP is suitable material for RBL. In this work, we evaluated the PL characteristics and estimated the ideal laser cooling efficiency and the small-signal gain of the (Yb:Y)AP (Yb0.1Y0.9AlO3) ceramics fabricated by a solid-state reaction method. We used McCumber’s relationship and referred to the literatures to derive the absorption and the small-signal gain spectra. The fluorescence re-absorption is observed in the PL spectra of (Yb:Y)AP ceramics with a thickness of ~2 mm, whereas the re-absorption is not observed in (Yb:Y)AG(Yb 0.3Y2.7Al5O12). This result indicates the strong absorbance of (Yb:Y)AP. The obtained ideal laser cooling efficiencies of (Yb:Y)AP and (Yb:Y)AG at 300 K were 1.4 and 1.8%, respectively. On the other hand, the maximum small-signal gain of 0.27 cm−1 in (Yb:Y)AP is 3.5 times larger than that of 0.078 cm^−1 in (Yb:Y)AG. The large smallsignal gain of (Yb:Y)AP arises from its strong absorbance and intrinsic energy structure.
キーワード
photonic heat engines
radiation balanced laser
laser cooling in solids
anti-Stokes PL
rare-earth
oxides
perovskite
カテゴリ
工学研究科
会議発表論文
権利
Copyright (2021) Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.