Study of ultrafast resonant optical response toward thermal-free photonics
| Project/Area Number |
24244048
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
Ishihara Hajime 大阪府立大学, 工学(系)研究科(研究院), 教授 (60273611)
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| Co-Investigator(Kenkyū-buntansha) |
ASHIDA Masaaki 大阪大学, 基礎工学研究科, 教授 (60240818)
ICHIMIYA Masayoshi 滋賀県立大学, 工学部, 准教授 (00397621)
SHIM Yong-Gu 大阪府立大学, 工学研究科, 准教授 (20336803)
YOKOSHI Nobuhiko 大阪府立大学, 工学研究科, 助教 (90409681)
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| Project Period (FY) |
2012-05-31 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥46,800,000 (Direct Cost: ¥36,000,000、Indirect Cost: ¥10,800,000)
Fiscal Year 2015: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2014: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2013: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2012: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
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| Keywords | 非線形光学 / 励起子 / CuCl / ZnO / 薄膜 / 四光波混合 / カー応答 / ZuO / 光物性 / 光スイッチ / 半導体物性 / 量子閉じ込め / ナノ材料 |
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| Outline of Final Research Achievements |
This study has successfully demonstrated a thermal-free ultrafast optical response for thin films in a crossover thickness regime between nano- and bulk regimes, where the excitonic mode with a wide radiative width exhibits a radiative decay faster than the dephasing at room temperature. We have observed an ultrafast response with 10 fs order by the excitation covering a whole width of the ultra-wide mode, where the signal reduction at room temperature is minimized. Our newly developed theory of nonlinear response of the ultra-wide modes well explains the above results. Furthermore, we have developed a theory for the ultrafast photoluminescence of confined excitons in the crossover thickness regime, and it proposes up-conversion photoluminescence from the superposed states of energetically different excitonic states coupled each other via radiation. We have also observed similar effects in experiments, which show the possibility for developing a new type of up-conversion light source.
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Report
(5 results)
Research Products
(104 results)
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[Journal Article] Observation of bound and antibound states of cavity polariton pairs in a CuCl microcavity2014
Author(s)
S. Matsuura, Y. Mitsumori, H. Kosaka, K. Edamatsu, K. Miyazaki, D. Kim, M. Nakayama, G. Oohata, H. Oka, H. Ajiki, and H. Ishihara
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Journal Title
Phys. Rev. B
Volume: 89
Issue: 3
DOI
Related Report
Peer Reviewed
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[Presentation] CuCl微小共振器における四光波混合スペクトルの偏光依存性2014
Author(s)
三森康彦, 松浦心平, 小坂英男, 枝松圭一, 宮崎健一, 金 大貴, 中山正昭, 大畠梧郎, 岡 寿樹, 安食博志, 石原 一
Organizer
日本物理学会・2014年春季大会
Place of Presentation
東海大学（神奈川）
Related Report
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[Presentation] 共振器中の CuCl 薄膜における励起子分子の輻射緩和2013
Author(s)
安食博志, 松浦心平, 三森康義, 小坂英男, 枝松圭一, 宮崎健一, 金谷侑佳, 金 大貴, 中山正昭, 大畠悟郎, 石原 一
Organizer
第24回光物性研究会
Place of Presentation
大阪市立大学（大阪）
Related Report
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[Presentation] Polarization dependence of four wave mixing via biexcitons in CuCl microcaviteis
Author(s)
S. Matsuura, Y. Mitsumori, H. Kosaka, K. Edamatsu, K. Miyazaki, Y. Kanatani, D. Kim, M. Nakayama, G. Ohata, H. Oka, H. Ajiki and H. Ishihara
Organizer
5th International Conference on Opticai, Optoelectronic and Photonic Materials and Applications (ICOOPMA2012)
Place of Presentation
新公会堂（Nara）
Related Report
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