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5 March 2021 Single-mode topological valley-Hall lasing controlled by the degree of asymmetry
Wanwoo Noh, Hadiseh Nasari, Hwi-Min Kim, Quynh Le-Van, Zhetao Jia, Chi-Hsin Huang, Boubacar Kante
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Proceedings Volume 11705, Novel In-Plane Semiconductor Lasers XX; 117050C (2021) https://doi.org/10.1117/12.2582666
Event: SPIE OPTO, 2021, Online Only
Abstract
Topology plays a fundamental role in contemporary physics and enables new information processing schemes and wave device physics with built-in robustness. However, the creation of photonic topological phases usually requires complex geometries that limit the prospect for miniaturization and integration, and, dispossess designers of additional degrees of freedom needed to control topological modes on-chip. By controlling the degree of asymmetry (DoA) in a photonic crystal with broken inversion symmetry, we report single-mode lasing of valley-Hall ring cavities at telecommunication wavelength. Our results open the door to novel optoelectronic devices and systems based on compact topological integrated circuits.
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Wanwoo Noh, Hadiseh Nasari, Hwi-Min Kim, Quynh Le-Van, Zhetao Jia, Chi-Hsin Huang, and Boubacar Kante "Single-mode topological valley-Hall lasing controlled by the degree of asymmetry", Proc. SPIE 11705, Novel In-Plane Semiconductor Lasers XX, 117050C (5 March 2021); https://doi.org/10.1117/12.2582666
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KEYWORDS
Interfaces
Photonic crystals
Physics
Backscatter
Data processing
Microwave radiation
Optoelectronic devices
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