| Title | InP/ZnSeS/ZnS Core-Shell Quantum Dots as Novel Saturable Absorbers in Mode-Locked Fiber Lasers |
| Author | |
| Corresponding Author | Zhang, Xinhai |
| Publication Years | 2022-12-01
|
| DOI | |
| Source Title | |
| ISSN | 2195-1071
|
| Abstract | In this study, red light emitting InP/ZnSeS/ZnS quantum dots (QDs) are prepared by thermal injection method. The results show that the InP/ZnSeS/ZnS QDs saturable absorbers (SA) have good nonlinear saturable absorption properties with modulation depth of 24.2% and saturation intensity of 0.08 KW cm(-2). Then the QD SAs are applied to the erbium-doped fiber laser (EDFL) ring cavity system, and a mode-locked laser pulse with a pulse width of 635 fs is generated. In addition, the pulse width is determined by the carrier recovery time, which is closely related to the defect density in the material. A large number of defects are eliminated in the QDs by hydrogen fluoride (HF) treatment, and the pulse width is reduced from 635 to 450 fs. Results of time-resolved photoluminescence and ultrafast transient absorption spectroscopy (TAS) show that HF treatment indeed reduces defects in InP/ZnSeS/ZnS QDs, indicated by the decrease of the carrier recovery time. This is different from the reported 2D SA materials, which usually reduce the carrier recovery time by increasing the defect density. This study will inspire new applications of QDs in ultrafast photonics and nonlinear optics. |
| Keywords | |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | First
; Corresponding
|
| Funding Project | [JCYJ20180504170604552]
; [KQTD2015071710313656]
; [JSGG20190822180401693]
; [JCYJ20210324115608024]
|
| WOS Research Area | Materials Science
; Optics
|
| WOS Subject | Materials Science, Multidisciplinary
; Optics
|
| WOS Accession No | WOS:000894196400001
|
| Publisher | |
| Data Source | Web of Science
|
| Citation statistics |
Cited Times [WOS]:0
|
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/417113 |
| Department | Department of Electrical and Electronic Engineering |
| Affiliation | 1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China 2.Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 510006, Peoples R China 3.Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Peoples R China |
| First Author Affilication | Department of Electrical and Electronic Engineering |
| Corresponding Author Affilication | Department of Electrical and Electronic Engineering |
| First Author's First Affilication | Department of Electrical and Electronic Engineering |
| Recommended Citation GB/T 7714 |
Lou, Yajun,He, Pengfei,Ge, Boyuan,et al. InP/ZnSeS/ZnS Core-Shell Quantum Dots as Novel Saturable Absorbers in Mode-Locked Fiber Lasers[J]. Advanced Optical Materials,2022.
|
| APA |
Lou, Yajun.,He, Pengfei.,Ge, Boyuan.,Duan, Xijian.,Hu, Lei.,...&Zhang, Xinhai.(2022).InP/ZnSeS/ZnS Core-Shell Quantum Dots as Novel Saturable Absorbers in Mode-Locked Fiber Lasers.Advanced Optical Materials.
|
| MLA |
Lou, Yajun,et al."InP/ZnSeS/ZnS Core-Shell Quantum Dots as Novel Saturable Absorbers in Mode-Locked Fiber Lasers".Advanced Optical Materials (2022).
|
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