Infrared and Laser Engineering, Volume. 53, Issue 11, 20240224(2024)
Nonlinear optical properties of SnSe2 quantum dot composite gel glass
Figures & Tables(10)
Fig. 2. (a)-(b) The TEM image of SnSe2 QDs (the inset is the electron diffraction pattern of SnSe2 quantum dots); (c) The HRTEM image of SnSe2 QDs; (d) Statistical plot of particle size of SnSe2 QDs
Fig. 3. ( (a) Digital photo of blank glass (left) and SnSe2 QD composite gel glass (right); (b) SEM image of the cross section of SnSe2 QD composite gel glass; (c)-(f) EDX energy spectrum of O, Si, Se and Sn elements in SnSe2 QD composite gel glass
Fig. 4. The Raman spectrum of SnSe2 QDs and SnSe2 QD composite gel glass
Fig. 5. (a)-(b) Absorption spectra of SnSe2 QDs and SnSe2 QD composite gel glass; (c)-(d) Band gap width calculation diagram of SnSe2 QDs and its composite gel glass
Fig. 6. (a)-(b) OA Z-scan curves of the SnSe2 QD composite gel glass under ps and ns excitation; (c)-(d) OA Z-scan curves of the blank gel glass under ps and ns excitation
Fig. 7. OA
Fig. 8. (a) Two dimensional transient absorption color spectrum of the SnSe2 QD composite gel glass; (b) Transient absorption spectra curve of SnSe2 QD composite gel glass; (c) The decay kinetics curve of the probe wavelength at 532 nm; (d) The relaxation time
Table 1.
β , Imχ (3),FOM , andI s of SnSe2 QD composite gel glass and other reported materialsView tableView in ArticleTable 1.
β , Imχ (3),FOM , andI s of SnSe2 QD composite gel glass and other reported materialsInput engergy/materials β/×10−10 m·W−1 Imχ(3)/×10−12 esu FOM/×10−12 esu Is /×1011 W·m−2 Reference 4 μJ −4.4×10−3 −1.24×10−2 6.18×10−3 3.2 This work 5 μJ −5.5×10−3 −1.55×10−2 7.73×10−3 4.4 This work 6 μJ −8.5×10−3 −2.40×10−2 11.9×10−3 8.9 This work 7 μJ −11×10−3 −3.11×10−2 15.5×10−3 9.2 This work 20 μJ 1.5 4.24 1.66 N/A This work 40 μJ 1.26 3.56 1.40 N/A This work 60 μJ 1.1 3.11 1.22 N/A This work 80 μJ 1.3 3.67 1.44 N/A This work Pd NPS −5.14×10−2 N/A N/A 3.59 [ 22 ]Ag2S QDS −0.48 N/A N/A 0.28 [ 23 ]MXene flake 1.1×10−3 1.95×10−2 2.44×10−3 N/A [ 24 ]Nb2C QDs 1.1×10−2 2.76 N/A N/A [ 25 ]graphene QDs 1.7 0.57×10−2 N/A N/A [ 26 ]BP QDs N/A N/A N/A 0.33 [ 27 ]CsPbBr3 QDs 0.32 0.26 N/A N/A [ 28 ]
Table 2. The ultrafast relaxation times of SnSe2 QD composite gel glass and the reported materials
View tableView in ArticleTable 2. The ultrafast relaxation times of SnSe2 QD composite gel glass and the reported materials
Materials Wavelength/ nm Ultrafast relaxation time Reference Pump Probe τ1/ps τ2/ps SnSe2 QDs 360 532 13.36 288.64 This work VP nanosheets 420 540 1.1 85 [ 29 ]BP nanosheets 400 520 9.4 94.2 [ 30 ]InP/ZnS QDs 400 562 2 173 [ 31 ]Co-TCPP(Fe) MOF 400 513 3.5 733.5 [ 32 ]WS2 QDs 400 600 5.3 132 [ 33 ]
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Chan ZHENG, Di WANG, Li HUANG, Xueqing XIAO, Xingfang HUANG. Nonlinear optical properties of SnSe2 quantum dot composite gel glass[J]. Infrared and Laser Engineering, 2024, 53(11): 20240224
Paper Information
Category: 非线性光学
Received: Jul. 3, 2024
Accepted: --
Published Online: Dec. 13, 2024
The Author Email: ZHENG Chan (czheng@fjut.edu.cn)
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