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Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton
Optics Express
|December 17, 2017
Summary
This study introduces a new method for all-optical switching using linearly polarized spinor polaritons. It achieves transistor-like 90° beam switching, overcoming limitations of previous scalar field approaches.
Area of Science:
- Optoelectronics
- Quantum optics
- Semiconductor physics
Background:
- Spontaneously emerging polariton density patterns in semiconductor microcavities show promise for all-optical switching.
- Previous methods were limited to scalar fields and 60° switching, neglecting polariton spin properties.
Purpose of the Study:
- To develop an all-optical switching method utilizing polariton spin-dependent properties.
- To achieve transistor-like orthogonal (90°) beam switching for enhanced cascadability.
Main Methods:
- Utilizing a linearly polarized spinor field of polaritons.
- Investigating switching based on far-field patterns.
Main Results:
- Demonstrated transistor-like orthogonal beam switching (90°).
- Showed that switching specifications like amplification and speed are optically tunable.
Conclusions:
- The proposed spinor polariton approach offers a significant advancement for all-optical switching.
- This method overcomes limitations of scalar fields and hexagon patterns, enabling efficient and tunable optical switching.
