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Generación de luz de infrarrojo medio en un microdisco de niobato de litio sin ninguna estructura de polado periódico
Optics letters
|January 30, 2026
Resumen
Este estudio demuestra la salida láser de infrarrojo medio de un microdisco de niobato de litio sin polado. Este enfoque simplificado logra una conversión no lineal eficiente para fuentes de luz compactas.
Área de la Ciencia:
- Fotónica
- Óptica No Lineal
- Ciencia de Materiales
Sus antecedentes:
- Los resonadores de galería de susurros (WGR) permiten la oscilación paramétrica óptica (OPO) de bajo umbral.
- El polado periódico del niobato de litio (LN) permite la sintonización de la longitud de onda, pero aumenta la complejidad de la fabricación.
- Los métodos existentes para OPO basados en LN requieren pasos de polado adicionales, lo que aumenta el tiempo de producción.
Objetivo del estudio:
- Demostrar la salida láser de infrarrojo medio (MIR) de un microdisco de niobato de litio sin el uso de estructuras de polado.
- Lograr una conversión no lineal eficiente en un proceso de fabricación simplificado.
- Presentar un método viable para producir fuentes de luz MIR compactas basadas en LN.
Principales métodos:
- Utilización de la coincidencia de fase modal y de Tipo I en un microdisco de niobato de litio.
- Fabricación de un microdisco resonador con un factor Q alto.
- Caracterización de las longitudes de onda idler generadas y la eficiencia de conversión no lineal.
Principales resultados:
- Se logró un factor Q de 1.23 × 106 en el resonador de microdisco.
- Se generaron longitudes de onda idler de hasta 4101 nm.
- Se obtuvo una eficiencia de conversión no lineal de aproximadamente 4.2% sin polado.
Conclusiones:
- El método propuesto permite la generación eficiente de láseres MIR a partir de microdiscos de LN sin polado.
- Este enfoque simplifica significativamente el flujo de trabajo de fabricación de dispositivos ópticos basados en LN.
- Los resultados ofrecen una solución práctica para el desarrollo de fuentes de luz MIR compactas y eficientes.
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