Nano laser based on metal tip and air slot surface plasmon polaritons
A surface plasmon and nano-laser technology, which is applied in the field of nano-lasers, can solve the problems of large threshold of nano-lasers, non-concentrated light field distribution, and large energy loss, and achieve the effects of small energy loss, lower threshold, and small threshold
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[0026] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0027] Such as figure 1 As shown, the metal tip-air groove-based surface plasmon-based nanolaser of the embodiment of the present invention includes an insulating layer 3 and a gain medium cavity 1, an air gap layer 2 and a metal tip layer 4 connected by the insulating layer 3 ,among them:
[0028] The air gap layer 2 is an air groove of the insulating layer 3, which is arranged in the middle of the upper edge of the insulating layer 3; the gain medium cavity 1 is arranged above the air gap layer 2, the cross section of the gain medium cavity 1 and the air gap layer The cross section of 2 is co...
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