Linear and nonlinear record high optical birefringence in anisotropic van der Waals crystals
2025
High Optical Birefringence in Van der Waals Crystals
publication
Evidence: moderate
Author Information
Author(s): Luca Sortino
Primary Institution: Ludwig-Maximilians-Universität München
Hypothesis
Can van der Waals materials exhibit record high optical birefringence?
Conclusion
Van der Waals materials, particularly As2S3 and PdPSe, show unprecedented optical anisotropies and birefringence, making them promising for advanced photonic devices.
Supporting Evidence
- Van der Waals materials have unique properties that make them suitable for nonlinear optics.
- PdPSe shows strong nonlinear responses due to its unique crystal structure.
- As2S3 has the highest birefringence values, surpassing previous records.
Takeaway
Some special materials can split light into different colors, which can help make better gadgets like lasers and switches.
Limitations
The field is still in its infancy, and challenges remain in understanding mechanisms and optimizing production.
Digital Object Identifier (DOI)
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