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Formación de relieves superficiales con luz que posee múltiples vórtices
Junjie Zhao1, Kazuro Kizaki1, Atsushi Taguchi2
1Department of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai, Japan.
Nanophotonics (Berlin, Germany)
|December 17, 2025
Resumen
Los investigadores demuestran la formación de relieves superficiales utilizando modos de vórtice híbridos no degenerados. Esta interacción luz-materia revela nueva información sobre el acoplamiento espín-órbita y permite la fabricación de estructuras quirales.
Área de la Ciencia:
- Óptica y Fotónica
- Física de la Materia Condensada
- Ciencia de Materiales
Sus antecedentes:
- Las interacciones luz-materia son fundamentales para el procesamiento de materiales.
- Los haces de vórtice, caracterizados por el momento angular orbital (OAM), ofrecen posibilidades únicas de interacción luz-materia.
- Los modos de vórtice híbridos no degenerados, una superposición de modos de Laguerre-Gauss (LG), poseen estructuras de fase complejas y transportan OAM.
Objetivo del estudio:
- Demostrar la formación de relieves superficiales utilizando modos de vórtice híbridos no degenerados.
- Investigar los mecanismos subyacentes de interacción luz-materia que involucran el acoplamiento del momento angular de espín (SAM) y el momento angular orbital (OAM).
- Explorar el potencial para fabricar nuevas estructuras de superficie quirales.
Principales métodos:
- Superposición coherente de dos modos de Laguerre-Gauss (LG) con diferentes índices de OAM para generar modos de vórtice híbridos no degenerados.
- Irradiación del material con estos modos de vórtice diseñados.
- Análisis de las estructuras de relieve superficial resultantes, incluida la visualización de campos de vórtice y singularidades de fase.
Principales resultados:
- Fabricación exitosa de estructuras de relieve superficial mediante irradiación con modos de vórtice híbridos no degenerados.
- Observación de protuberancias en forma de puño en el relieve superficial, que se correlacionan con campos de vórtice localizados y singularidades de fase.
- Demostración de los efectos de acoplamiento SAM-OAM que influyen en el proceso de modificación del material.
Conclusiones:
- Los modos de vórtice híbridos no degenerados pueden inducir patrones específicos de relieve superficial.
- Los hallazgos proporcionan información sobre las interacciones fundamentales luz-materia y la formación de redes de vórtices.
- Se presenta un método novedoso para fabricar estructuras de relieve superficial quiral con aplicaciones potenciales en el almacenamiento de datos ópticos y las metaestructuras.
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