simulations of rolled-up optical microcavities using...
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![Page 1: Simulations of rolled-up optical microcavities using COMSOLcn.comsol.com/paper/download/371441/李_presentation.pdfRolled-up optical microcavities [1] Y. F. Mei et al., Adv. Mater](https://reader034.vdocuments.net/reader034/viewer/2022051512/60353ed32169d66f752f200d/html5/thumbnails/1.jpg)
Simulations of rolled-up optical microcavities
using COMSOL
Shilong Li (李世龙)
National Laboratory for Infrared Physics
Shanghai Institute of Technical Physics
Chinese Academy of Sciences
Excerpt from the Proceedings of the 2016 COMSOL Conference in Shanghai
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Optical resonances
k -k
...2,1,22 ,mmLk
L
k4m
resonant modes:
![Page 3: Simulations of rolled-up optical microcavities using COMSOLcn.comsol.com/paper/download/371441/李_presentation.pdfRolled-up optical microcavities [1] Y. F. Mei et al., Adv. Mater](https://reader034.vdocuments.net/reader034/viewer/2022051512/60353ed32169d66f752f200d/html5/thumbnails/3.jpg)
Optical resonances
k -k
...2,1,22 ,mmLk
7m whispering gallery modes (WGMs):
...2,1,2 ,mmLk
k
L
L
k4m
resonant modes:
![Page 4: Simulations of rolled-up optical microcavities using COMSOLcn.comsol.com/paper/download/371441/李_presentation.pdfRolled-up optical microcavities [1] Y. F. Mei et al., Adv. Mater](https://reader034.vdocuments.net/reader034/viewer/2022051512/60353ed32169d66f752f200d/html5/thumbnails/4.jpg)
Optical resonances
k -k
...2,1,22 ,mmLk
7m whispering gallery modes (WGMs):
...2,1,2 ,mmLk
k
L
L
k4m
resonant modes:
WGM optical microcavities (WGM OMs)
![Page 5: Simulations of rolled-up optical microcavities using COMSOLcn.comsol.com/paper/download/371441/李_presentation.pdfRolled-up optical microcavities [1] Y. F. Mei et al., Adv. Mater](https://reader034.vdocuments.net/reader034/viewer/2022051512/60353ed32169d66f752f200d/html5/thumbnails/5.jpg)
WGM optical microcavities
K. J. Vahala, Nature 424, 839 (2003).
![Page 6: Simulations of rolled-up optical microcavities using COMSOLcn.comsol.com/paper/download/371441/李_presentation.pdfRolled-up optical microcavities [1] Y. F. Mei et al., Adv. Mater](https://reader034.vdocuments.net/reader034/viewer/2022051512/60353ed32169d66f752f200d/html5/thumbnails/6.jpg)
WGM optical microcavities
confined by total internal reflection (TIR):
...2,1,2Aeff ,mmmLkn
TIR phasedynamic phase
K. J. Vahala, Nature 424, 839 (2003).
![Page 7: Simulations of rolled-up optical microcavities using COMSOLcn.comsol.com/paper/download/371441/李_presentation.pdfRolled-up optical microcavities [1] Y. F. Mei et al., Adv. Mater](https://reader034.vdocuments.net/reader034/viewer/2022051512/60353ed32169d66f752f200d/html5/thumbnails/7.jpg)
WGM optical microcavities
confined by total internal reflection (TIR):
...2,1,2Aeff ,mmmLkn
TIR phasedynamic phase
versatile applications:
cavity QED, (bio)sensors, photonic devices
K. J. Vahala, Nature 424, 839 (2003).
![Page 8: Simulations of rolled-up optical microcavities using COMSOLcn.comsol.com/paper/download/371441/李_presentation.pdfRolled-up optical microcavities [1] Y. F. Mei et al., Adv. Mater](https://reader034.vdocuments.net/reader034/viewer/2022051512/60353ed32169d66f752f200d/html5/thumbnails/8.jpg)
Rolled-up optical microcavities
![Page 9: Simulations of rolled-up optical microcavities using COMSOLcn.comsol.com/paper/download/371441/李_presentation.pdfRolled-up optical microcavities [1] Y. F. Mei et al., Adv. Mater](https://reader034.vdocuments.net/reader034/viewer/2022051512/60353ed32169d66f752f200d/html5/thumbnails/9.jpg)
Rolled-up optical microcavities
[1] Y. F. Mei et al., Adv. Mater. 20, 4085 (2008).
advantages using rolled-up WGM OMs:
on-chip [1]
arbitrary material [2-5]
hollow tubular geometry [1]
subwavelength wall thickness [6]
diverse structure[3] T. Kipp et al., Phys. Rev. Lett. 96, 077403 (2006).
[4] R. Songmuang et al., Appl. Phys. Lett. 90, 091905 (2007).
[2] S. Böttner et al., Opt. Lett. 37, 5136 (2012).
[5] J. Wang et al., Opt. Express 20, 18555 (2012).
[6] S. M. Harazim et al., Lab Chip 12, 2649 (2012).
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Rolled-up optical microcavities
U-shaped pattern:
free-standing in the middle
axial confinement
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Rolled-up optical microcavities
TE
S. Li et al., Appl. Phys. Lett. 101, 231106 (2012).
TM
bilayer: 7 nm SiOx and 28 nm SiO2
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Simulations for rolled-up optical microcavities
cylindrical ring approximation
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Simulations for rolled-up optical microcavities
hexahedron3
rolled-up tubular structure
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Simulations for rolled-up optical microcavities
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• Prof. Oliver G. Schmidt
• Prof. Yongfeng Mei
• Dr. Suwit Kiravittaya
• Dr. Libo Ma
• Stefan Böttner
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• Dr. Honglou Zhen
• Vladimir A. Bolanos Quinones
• Prof. Vladimir Fomin
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Acknowledgements
Thank you very much for your attention!
• CSC (China Scholarship Council)