Nanolaser based on depth-subwavelength graphene-dielectric hyperbolic dispersive cavity

US11289878B2 · kind B2 · utility

Assignee

• ZHENGZHOU UNIVERSITY OF AERONAUTICS · CN

Inventors

• Yan Li · Beijing, CN
• Facheng Zhong · Baofeng County, CN
• Yanyan Wang · Shanghai, CN
• Peng Yang · Beijing, CN
• Kun Xu · Sunol, US
• Pei-Pei Ding · Yuanli, TW
• Fanguang Zeng · Nanhu, CN

Key dates

• Filing date: Nov 16, 2020
• Grant date: Mar 29, 2022
• Expiry date: Nov 16, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/3027
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The disclosure provides a nanolaser based on a depth-subwavelength graphene-dielectric hyperbolic dispersive cavity, comprising a pumping light source and the depth-subwavelength graphene-dielectric hyperbolic dispersive cavity; wherein the depth-subwavelength graphene-dielectric hyperbolic dispersive cavity is a spherical or hemispherical hyperbolic dispersive microcavity formed by alternately wrapping a dielectric core with graphene layers and dielectric layers. Because the graphene plasmon has unique excellent performances, such as an electrical adjustability, a low intrinsic loss, a high optical field localization, and a continuously adjustable resonance frequency from mid-infrared to terahertz, compared with a common metal-dielectric hyperbolic dispersive characteristic, a graphene-dielectric hyperbolic dispersive metamaterial used by the disclosure not only may highly localize an energy of an electromagnetic wave in a more depth-subwavelength cavity, but also may reduce an ohmic loss and improve a quality factor.