Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton fluid
| Autor: | Rolf Binder, Samuel M. H. Luk, Chris K. P. Chan, P. T. Leung, Stefan Schumacher, N. H. Kwong, P. Lewandowski |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Scalar (physics) FOS: Physical sciences Near and far field 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Optical switch Atomic and Molecular Physics and Optics Condensed Matter - Other Condensed Matter Four-wave mixing Optics Spinor field 0103 physical sciences Polariton Light beam 010306 general physics 0210 nano-technology business Beam (structure) Other Condensed Matter (cond-mat.other) |
| Zdroj: | Optics express. 25(25) |
| ISSN: | 1094-4087 |
| Popis: | Over the past decade, spontaneously emerging patterns in the density of polaritons in semiconductor microcavities were found to be a promising candidate for all-optical switching. But recent approaches were mostly restricted to scalar fields, did not benefit from the polariton's unique spin-dependent properties, and utilized switching based on hexagon far-field patterns with 60{\deg} beam switching (i.e. in the far field the beam propagation direction is switched by 60{\deg}). Since hexagon far-field patterns are challenging, we present here an approach for a linearly polarized spinor field, that allows for a transistor-like (e.g., crucial for cascadability) orthogonal beam switching, i.e. in the far field the beam is switched by 90{\deg}. We show that switching specifications such as amplification and speed can be adjusted using only optical means. |
| Databáze: | OpenAIRE |
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