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Ultra-high optomechanical EUV-hypersound coupling rate in phoxonic crystal structures based on 2D MWCNTs array.
Yasser Shamsollahi1, Mohammad Kazem Moravvej-Farshi2
1Nano Plasmo-Photonic Research Group, Faculty of Electrical and Computer Engineering, Tarbiat Modares University, P.O. Box 14115-194, Tehran, 1411713116, Iran.
Scientific Reports
|April 22, 2025
Summary
We theoretically studied phoxonic crystals made of multiwall carbon nanotubes (MWCNT). Our research demonstrates ultra-high optomechanical coupling rates for extreme ultraviolet light and hypersonic acoustic waves.
Area of Science:
- Optomechanics
- Materials Science
- Nanotechnology
Background:
- Phoxonic crystals integrate photonic and phononic functionalities.
- Carbon nanotubes offer unique optomechanical properties.
Purpose of the Study:
- To theoretically investigate optomechanical properties of multiwall carbon nanotube (MWCNT)-based phoxonic crystals.
- To explore interactions between extreme ultraviolet (EUV) light and hypersonic acoustic waves.
Main Methods:
- Theoretical modeling of phoxonic crystal structures.
- Analysis of optomechanical coupling rates.
- Utilizing surface acoustic wave (SAW) devices.
Main Results:
- Demonstrated interaction between EUV (PHz) optical waves and hypersonic (GHz) mechanical waves.
- Achieved ultra-high optomechanical coupling rates (2.78–63.56 THz nm⁻¹), an order of magnitude higher than previously reported.
- Proposed MWCNT arrays with nanometer spacing for enhanced coupling.
Conclusions:
- MWCNT-based phoxonic crystals enable unprecedented optomechanical coupling.
- Mode analysis can identify structural imperfections in MWCNT arrays.
- This work paves the way for novel optomechanical devices.
