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Interference filters: single crystal multilayer AlAs-GaAs
Applied Optics
|February 19, 2010
Summary
High and low reflectance single crystal quarter wave stacks were grown using alternating layers of aluminum arsenide (AlAs) and gallium arsenide (GaAs) on GaAs substrates.
Area of Science:
- Materials Science
- Optoelectronics
- Semiconductor Physics
Background:
- Quarter-wave stacks are crucial optical components.
- High-quality single crystal growth is essential for precise optical properties.
Purpose of the Study:
- To grow high and low reflectance single crystal quarter wave stacks.
- To utilize alternating layers of AlAs and GaAs for optical applications.
Main Methods:
- Single crystal quarter wave stacks were grown.
- Alternating layers of aluminum arsenide (AlAs) and gallium arsenide (GaAs) were used.
- Molecular beam epitaxy (MBE) was employed on GaAs substrates.
Main Results:
- Successfully grew single crystal quarter wave stacks.
- Achieved high and low reflectance properties.
- Demonstrated the effectiveness of AlAs/GaAs heterostructures.
Conclusions:
- AlAs/GaAs single crystal quarter wave stacks can be effectively grown by MBE.
- The grown structures exhibit tunable high and low reflectance.
- This method is suitable for fabricating advanced optical devices.
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