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Modos topológicos en una cavidad láser a través de la transferencia de estado excepcional
A Schumer1,2, Y G N Liu1, J Leshin3
1Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA 90089, USA.
Science (New York, N.Y.)
|February 24, 2022
Resumen
Los investigadores dieron forma a la emisión de luz láser mediante el diseño de una cavidad que rodea un punto excepcional no hermético. Este método crea modos de láser únicos y que evolucionan espacialmente con potencial para dispositivos ópticos avanzados.
Área de la Ciencia:
- Óptica y fotónica
- Física Cuántica
- Ciencias de los materiales
Sus antecedentes:
- Los modos láser suelen mantener un perfil espacial transversal auto-similar dentro de la cavidad.
- El control de las características de emisión de luz es crucial para diversas aplicaciones científicas y tecnológicas.
Objetivo del estudio:
- Demostrar un método para dar forma a los modos láser que evolucionan espacialmente.
- Para lograr modos de láser que se asientan en estados bi-ortogonales en las facetas de la cavidad.
Principales métodos:
- Diseño de una estructura de cavidad láser para rodear un punto excepcional no hermítico.
- Asegurar que el modo láser evite saltos no adiabáticos durante su evolución.
Principales resultados:
- Con éxito formó un modo láser espacialmente evolutivo.
- Se ha demostrado el establecimiento fiel en estados biortogonales en las facetas de la cavidad.
- Transferencia de estado vinculado a la topología de las superficies de Riemann cerca de puntos excepcionales.
Conclusiones:
- El enfoque desarrollado permite dispositivos activos de modo selectivo versátiles.
- Destaca las propiedades topológicas de los puntos excepcionales en los sistemas láser.
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