KMS Shanghai Institute of Optics and Fine Mechanics, CAS
| Ultrafast Saturable Absorption of Core/Shell Colloidal Quantum Dots | |
| Li, Jingzhou; Zhang, Saifeng; Dong, Hongxing; Ma, Yunfei; Xu, Bin; Wang, Jun; Cai, Zhiping; Chen, Zhanghai; Zhang, Long; hongxingd@siom.ac.cn; lzhang@siom.ac.cn | |
| 2017 | |
| Source Publication | Part. Part. Syst. Charact.
 |
| Volume | 34Issue:1 |
| Abstract | Ultrafast saturable absorption (SA) materials that are capable of blocking the optical absorption under strong excitation have extensive applications in photonic devices. This work presents core/shell colloidal quantum dots (CQDs) which have the quantized energy levels, excellent band gap tunability, and possess significant SA performance. When the band gap is close to the pump pulse energy, the CQDs show significant resonant SA response. At the same excitation conditions, the core/shell CQDs dispersions show better SA response than graphene dispersions, and comparable to the recently reported molybdenum disulfide. The carrier dynamics of the SA of the CQDs is analyzed systematically. The research has also found that the two-photon absorption of the CQDs show nearly cubic power law of the band gap, while the SA performance keeps almost the same in the nonresonant regime. Further, superior passive Q-switched laser behavior is observed using the CQDs as a saturable absorber. The results directly reveal the physical processes of this basic problem and broaden the applications of CQDs in photonic devices. |
| Subtype | Article |
| Department | 材料 |
| DOI | 10.1002/ppsc.201600193 |
| Funding Organization | NSFC [61378074, 61475173, 61308034, 61575164]; Shanghai Rising-Star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences ; NSFC [61378074, 61475173, 61308034, 61575164]; Shanghai Rising-Star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences ; NSFC [61378074, 61475173, 61308034, 61575164]; Shanghai Rising-Star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences ; NSFC [61378074, 61475173, 61308034, 61575164]; Shanghai Rising-Star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| Indexed By | SCI |
| Funding Organization | NSFC [61378074, 61475173, 61308034, 61575164]; Shanghai Rising-Star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences ; NSFC [61378074, 61475173, 61308034, 61575164]; Shanghai Rising-Star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences ; NSFC [61378074, 61475173, 61308034, 61575164]; Shanghai Rising-Star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences ; NSFC [61378074, 61475173, 61308034, 61575164]; Shanghai Rising-Star Program [14QA1404000]; Youth Innovation Promotion Association of Chinese Academy of Sciences |
| WOS ID | WOS:000393580600005 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.siom.ac.cn/handle/181231/28214 |
| Collection | 中科院强激光材料重点实验室 |
| Corresponding Author | hongxingd@siom.ac.cn; lzhang@siom.ac.cn |
| Affiliation | 中国科学院上海光学精密机械研究所 |
| Recommended Citation GB/T 7714 | Li, Jingzhou,Zhang, Saifeng,Dong, Hongxing,et al. Ultrafast Saturable Absorption of Core/Shell Colloidal Quantum Dots[J]. Part. Part. Syst. Charact.,2017,34(1). |
| APA | Li, Jingzhou.,Zhang, Saifeng.,Dong, Hongxing.,Ma, Yunfei.,Xu, Bin.,...&lzhang@siom.ac.cn.(2017).Ultrafast Saturable Absorption of Core/Shell Colloidal Quantum Dots.Part. Part. Syst. Charact.,34(1). |
| MLA | Li, Jingzhou,et al."Ultrafast Saturable Absorption of Core/Shell Colloidal Quantum Dots".Part. Part. Syst. Charact. 34.1(2017). |
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