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Published on: April 28, 2016
Optical anisotropy in single-walled carbon nanotubes
Seongwoo Yoo1, Yongmin Jung, Dong Soo Lee
1Department of Information and Communications, GIST, Buk-gu, Gwangju, Korea.
Optics Letters
|December 14, 2005
Summary
Vertically aligned single-walled carbon nanotube (SWNT) films exhibit optical anisotropy. Researchers controlled light polarization and transmission at 1550 nm by tilting SWNT films, demonstrating potential for optical devices.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Single-walled carbon nanotubes (SWNTs) possess unique optical and electronic properties.
- Vertically aligned SWNT films offer potential for novel optical applications due to their anisotropic nature.
Purpose of the Study:
- To investigate and demonstrate the control of light polarization and transmission using vertically aligned SWNT films.
- To explore the relationship between SWNT film orientation and optical properties at communication wavelengths.
Main Methods:
- Fabrication of vertically aligned SWNT films.
- Experimental setup to measure light polarization state and transmission intensity at 1550 nm.
- Systematic variation of SWNT film orientation (azimuthal and axial tilting).
Main Results:
- Observed optical anisotropy in SWNT films at 1550 nm.
- Demonstrated control over light polarization state by adjusting the azimuthal angle of semiconductor SWNTs.
- Showed that output beam intensity follows a cosine function dependence on the axial tilting angle.
Conclusions:
- Vertically aligned SWNT films can effectively modulate light polarization and transmission.
- The observed optical anisotropy and controllable light manipulation highlight the potential of SWNTs in optical communication technologies.
- SWNT films offer a tunable platform for developing advanced photonic devices.
