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Plasma excimer nanometer laser

A nano-laser and plasmon technology, applied in nano-optics, nano-technology, nano-technology, etc., can solve the problems of plasmon leakage, limited application, and high laser threshold, and achieve the effect of reducing leakage and improving quality factor.

Active Publication Date: 2014-06-11
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies have shown that the coupling between the oscillation mode of the thicker gain cavity and the metal plasmon will be weakened under the optimized thicker isolation layer, and most of the energy will remain in the gain medium cavity
Moreover, the plasmons coupled to the low-refractive-index isolation layer will not be able to undergo internal total reflection well due to the decrease in the effective refractive index due to the increase in the thickness of the isolation layer, resulting in leakage of plasmons, thus making the laser threshold very high
Greatly limit its practical application in the future

Method used

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Experimental program
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Effect test

Embodiment 1

[0040] figure 1 Shown is the gain waveguide structure of Embodiment 1 of a plasmonic nanolaser provided by the present invention. Where x, y and z represent the coordinate axes x-axis, y-axis and z-axis respectively.

[0041] Embodiment 1 of the present invention provides a gain waveguide structure corresponding to a plasmonic nanolaser, including a first dielectric layer 101, a first isolation layer 102, and a gain medium cavity 103, and the first isolation layer 102 is placed in On the exposed surface of the first dielectric layer 101, the gain medium cavity 103 is placed on the exposed surface of the first isolation layer 102, the ratio range of the thickness of the first isolation layer 102 to the longitudinal thickness of the gain medium cavity 103 is less than 0.5, The plasmon oscillation heat loss of the first dielectric layer 101 is reduced, thereby reducing the threshold value of laser light, obtaining a suitable thick gain medium cavity 103, and laying a foundation ...

Embodiment 2

[0056] Figure 3A Shown is a cross-sectional structure diagram of Embodiment 2 of a plasmonic nanolaser provided by the present invention. Where x, y and z represent the coordinate axes x-axis, y-axis and z-axis respectively.

[0057] Embodiment 2 of the present invention provides a plasmonic nanolaser, including a first dielectric layer 302, a first isolation layer 304, and a gain medium cavity 305, and the first isolation layer 304 is placed on the first dielectric layer 302 The gain medium cavity 305 is placed on the exposed surface of the first isolation layer 304, and the ratio range of the thickness of the first isolation layer 304 to the longitudinal thickness of the gain medium cavity 305 is less than 0.5, so that the first dielectric layer The plasmon oscillation heat loss of 302 is small, thereby reducing the threshold value of the laser, obtaining a suitable thickness of the thicker gain medium cavity 305, and laying the foundation for further realizing the electro...

Embodiment 3

[0064] Figure 5 Shown is the cross-section and horizontal cross-section structure of Embodiment 3 of a plasmonic nanolaser provided by the present invention.

[0065] In the figure, x, y and z represent the coordinate axes x-axis, y-axis and z-axis respectively; the far right in the figure is the horizontal cross-sectional structure of the laser in the third embodiment; the middle of the figure is the cross-section of the third embodiment.

[0066] Embodiment 3 of the present invention provides a plasmonic nanolaser, including a first dielectric layer 502, a first isolation layer 504, and a gain medium cavity 505, and the first isolation layer 504 is placed on the first dielectric layer 502 On the exposed surface of the gain medium cavity 505 is placed on the exposed surface of the first isolation layer 504, the ratio range of the thickness h3 of the first isolation layer 504 to the longitudinal thickness h1 of the gain medium cavity 505 is less than 0.5, embodiment three Fu...

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Abstract

The invention relates to a micro-nano photonic device and the field of laser technology. The invention provides a plasma excimer nanometer laser, comprising a first medium layer, a first isolated layer and a gain medium cavity. The first isolated layer is placed on the bare surface of the first medium layer. The gain medium cavity is placed on the bare surface of the first isolated layer. The laser is characterized in that the specific value scope between the thickness of the first isolated layer and the vertical thickness of the gain medium cavity body is less than 0.5. The plasma excimer nanometer laser provided by the invention has an advantage of decreasing the threshold value of laser.

Description

technical field [0001] The invention relates to the field of micro-nano photonic devices and laser technology, in particular to a metal-wrapped plasmon cavity oscillation nano-laser. Background technique [0002] The collective oscillations generated by the electron gas at the metal-dielectric interface under the excitation coupling of electromagnetic waves exhibit singular optical properties, also known as surface plasmon properties. The optical field strength attenuates exponentially in the vertical direction at the interface between the metal and the dielectric, and can couple light to the surface of the metal in a range of tens of nanometers or even smaller, so as to break through the limitation of the traditional light diffraction limit. For the resonant cavity structure of most conventional micro-lasers: 1 / 4λ distributed feedback structure, photonic bandgap defect structure, micro-disk laser structure, etc., limited by the diffraction limit, the condition of standing w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/34H01S5/20B82Y20/00
Inventor 黄增立王建峰徐科杨辉
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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