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Nanowire surface plasma laser

A nanowire and laser technology, applied in the structure of optical waveguide semiconductors, can solve the problems of inability to balance the mode field confinement capability and transmission loss, and achieve the effect of simplifying the manufacturing process and low transmission loss.

Inactive Publication Date: 2013-06-05
BEIHANG UNIV
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  • Abstract
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Problems solved by technology

The waveguide structure overcomes the problem that the traditional surface plasmon optical waveguide structure cannot balance the two physical quantities of mode field confinement capability and transmission loss

Method used

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  • Nanowire surface plasma laser
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example

[0034] figure 2 is the cross-sectional structure diagram of the surface plasmon laser described in the example. 201 is a cylindrical metal nanowire (end face is circular), n m is its refractive index, w m its width, h m Its height; 202 is a cylindrical gain medium nanowire (end face is circular), located on the side of the edge on the right side of 201 (that is, along the positive direction of the X axis) and parallel to the edge on the right side of 201, n g is its refractive index, w g its width, h g Its height; 203 is the dielectric layer of 2 coated metal nanowires, and is closely connected with 202, n d is its refractive index, h d Its thickness; 204 is the base layer, n s is its refractive index; 205 is the cladding, n c for its refractive index

[0035] figure 2 is the cross-sectional structure diagram of the surface plasmon laser described in the example. 201 is a metal film layer, n m is its refractive index, w m its width, h m Its height; 202 is a cyl...

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Abstract

The invention discloses a nanowire surface plasma laser, comprising a nanowire surface plasma laser structure. The nanowire surface plasma laser structure comprises a basal layer (4), a metal nanowire (1), a gain medium nanowire (2) and a coating layer (5), wherein the metal nanowire (1) is positioned above the basal layer (4) and is coated by a medium layer (3); and the gain medium nanowire (2) is tightly connected with the metal nanowire (1). Due to coupling of the metal nanowire and the gain medium nanowire, the distribution of an optical field can be obviously limited, two-dimensional subwavelength constraint can be realized for the optical field output by the laser, and simultaneously, lower transmission loss can be maintained still. The nanowire surface plasma laser is matched with the existing nanowire processing process, the relatively complex processing process based on the multilayer structural surface plasma laser is simplified, and possibility is provided for realizing a planar integrated nano active device.

Description

technical field [0001] The invention relates to the field of micro-nano photonic devices / lasers, in particular to a nanowire surface plasmon laser. Background technique [0002] Nanowire photonics technology has developed rapidly in recent years. Due to their excellent optical and electrical properties, nanowires have been widely used in various optical and optoelectronic devices, covering a range from guided wave to excitation light radiation. Among them, semiconductor nanowires have been used as stable laser light sources due to their small size and large refractive index difference. 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] On the other hand, researchers have attempted to apply surface plasmon technology to the laser field in recent years. Surface plasmo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/20
Inventor 郑铮卞宇生刘娅朱劲松
Owner BEIHANG UNIV
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