Plasma laser device

Abstract

The invention discloses a plasma laser device which comprises a metal layer and a gain medium layer formed on the metal layer. The transversal section of the gain medium layer is ring-shaped, wherein the transversal section of the gain medium layer is parallel to the metal layer. The transversal section of the gain medium layer closest to the metal layer is dropped in the scope covered by the metal layer. As the plasma laser device is provided with the ring-shaped gain medium layer, light field can do syntony in the ring-shaped structure so that the light field is strong in constraint ability. The light field can transmit circularly on the surface, wherein the surface is formed between the gain medium layer and the metal layer. The size of a nanometer laser device can be decreased. Meanwhile, integrated optics system can be miniaturized favorably as the ring-shaped structure can produce couple effects easily.

Description

technical field [0001] This application relates to the field of micro-nano optoelectronic devices / lasers, in particular to a plasma laser. Background technique [0002] Nanophotonics and optoelectronics have developed rapidly in recent years. Due to their excellent optical and electrical properties, nanostructured devices have been widely used in various optical and optoelectronic devices, covering a range from waveguides to laser radiation. With the rise of nanotechnology, the study of nanolasers has become a new and important topic. Nanolasers have strong application value in many fields, including electronic communication, information storage, biochemical sensors, and nanolithography. [0003] At present, many researchers apply the concept of surface plasmons to the laser field, and use the feature of surface plasmons to break through the diffraction limit, and are committed to the miniaturization of laser components. [0004] figure 1 It is a nano-laser based on the ...

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Problems solved by technology

[0005] However, the above-mentioned surface plasmon laser is based on a linear nanowire structure with a length of 1-2 microns and a large volume. If it is used in an integrated optical system, it is not conducive to the miniaturization of the device; at the same time, the laser in the above structure relies on Laser light is generated by the reflection of the two ends of the nanowire, most of the energy is emitted from the end face, and the energy left in the laser is very little, which is not conducive to obtaining high-power laser devices

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