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Multi-wavelength laser from dye-doped cholesteric polymer films.
1Optical Information Institute, Zhejiang Normal University, Jinhua, Zhejiang, China. hyh@zjnu.cn
Optics Express
|January 4, 2011
Summary
Researchers developed a multi-wavelength laser using a special polymer film. This broadband laser technology has potential applications in displays and fusion energy.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Cholesteric liquid crystal polymers exhibit tunable photonic band gaps.
- Broadband laser generation is crucial for advanced optical applications.
Purpose of the Study:
- To demonstrate a multi-wavelength laser using a dye-doped cholesteric polymer film.
- To investigate the potential of this material for broadband laser fabrication.
Main Methods:
- Fabrication of a dye-doped cholesteric polymer film with broadened reflection bandwidth.
- Utilizing photonic band gaps created by oscillations in the reflection spectrum.
- Excitation of the film with a pumping laser to generate laser output.
Main Results:
- Successful demonstration of a multi-wavelength laser.
- Each oscillation in the reflection spectrum acted as a photonic band gap for laser generation.
- The dye-doped cholesteric liquid crystal polymer film is suitable for broadband lasers.
Conclusions:
- The developed material is a promising candidate for broadband lasers, including white light lasers.
- Potential applications span laser material testing, identification markers, information displays, and inertial confinement laser fusion.
