Molybdenum disulfide-based surface plasmon nanolasers

Abstract

The invention discloses a molybdenum disulfide surface plasmon-based nanometer laser. The molybdenum disulfide surface plasmon-based nanometer laser comprises a semiconductor nanowire, an upper SiO2 layer, a MoS2 layer, a lower SiO2 layer, a metal nanowire and a SiO2 layer wrapping the metal nanowire, wherein air grooves are formed in horizontal middle positions of the upper SiO2 layer and the lower SiO2 layer, the upper SiO2 layer and the lower SiO2 layer are separated by the MoS2 layer, the semiconductor nanowire is arranged on the SiO2 layer and is connected with the air grooves in the horizontal middle positions of the upper SiO2 layer by two intersection points, the metal nanowire is arranged under the lower SiO2 layer and wraps the interior of the SiO2 layer, and the metal nanowire is connected with the air grooves in the horizontal middle part of the lower SiO2 layer by an intersection point. The molybdenum disulfide surface plasmon-based nanometer laser is low in energy consumption and smaller in threshold value, and can be implemented in a room temperature, and energy loss and local mode limitation can be reasonably balanced; and the molybdenum disulfide surface plasmon-based nanometer laser is convenient to manufacture, and is smaller in size, smaller in threshold value, more excellent in integral performance.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a molybdenum disulfide-based surface plasmon nano-laser. Background technique [0002] Laser is considered to be one of the most important inventions of the 20th century. In the 1960s, Maiman, an American, first invented the world's first ruby ​​solid-state laser. After more than half a century of development and progress, the development direction of lasers is rapidly developing in the direction of miniaturization, faster modulation and propagation speed, higher power, and lower loss. Before 2003, due to the limitations of the manufacturing process and the immaturity of the scientific theory, it was difficult for the size of the laser to continue to shrink and break through the diffraction limit. Nowadays, micro-nano technology is gradually mature, and the spatial size of lasers is continuously shrinking, and it has entered the era of micron or even nanometer level. However, si...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a kind of energy loss in the prior art, which is difficult to realize at room temperature, the distribution of the mode field is not concentrated, the threshold of the nano-laser is large, and the overall performance is poor. Molybdenum disulfide-based surface plasmon nanolaser with low loss, can be realized at room temperature, smaller threshold, and better overall performance

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