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Surface-emitting distribution feedback laser

A distributed feedback and laser technology, applied in the field of lasers, can solve the problems of laser power reduction, poor thermal stability, and low yield, and achieve high yield, simple preparation process, and save the effect of assembly and adjustment process

Active Publication Date: 2017-01-11
CHANGCHUN UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the introduction of all the above-mentioned special structures not only helps to improve the performance of the device, but also brings corresponding difficulties and challenges to the design, manufacture and assembly of the device, resulting in varying degrees of laser power reduction, poor thermal stability, and reduced lifespan. Undesirable phenomena such as low yield

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Embodiment Construction

[0030] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0031] refer to Figure 1-2 As shown, the surface emitting distributed feedback laser of the present invention includes:

[0032] A plurality of single laser tubes 1 fabricated on the same epitaxial chip are distributed in an array, and each single laser tube 1 includes an upper electrode 11, a substrate 12, an intermediate layer 13, The grating layer 14 and the lower electrode 15; the intermediate layer 13 in the present invention includes a buffer layer 131, a transition layer 132, an n-cladding layer 133, an n-cladding layer 134, an active layer 135, and a p-cladding layer 136 arranged sequentially from top to bottom and p cover layer 137, wh...

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Abstract

The invention discloses a surface-emitting distribution feedback laser. The laser comprises multiple laser single pipes manufactured on a same epitaxial chip, the laser single pipes are distributed in an array mode, and each laser single pipe comprises a top electrode, a substrate, a middle layer, a grating layer and a bottom electrode which are sequentially distributed from top to bottom; each grating curved waveguide is connected between two laser single pipes and used for mutual injection and phase locking of photons between the two adjacent laser single pipes; each grating curved waveguide comprises grading ridges distributed in an arc shape, and the two ends of each grating curved waveguide are connected with the middle layers of the two adjacent laser single pipes respectively. The surface-emitting distribution feedback laser has the advantages that the preparation process is simple, the yield is high, the complex assembling and adjusting process of microstructure elements is omitted, and the work stability is improved.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a phase-locked surface-emitting laser. Background technique [0002] The current surface-emitting laser is a semiconductor laser based on a special waveguide and grating structure that realizes laser longitudinal feedback oscillation and emits light perpendicular to the chip surface. It overcomes the inherent disadvantages of edge-emitting lasers such as complex emission spots and large divergence angles. Longitudinal mode output, small temperature drift, easy integration and other significant advantages. [0003] The existing technologies are all based on the simplest structure of surface-emitting lasers, by introducing micro-nano structures, special waveguides or gratings, etc., such as DBR mirrors, broadband DBRs, tapered gain regions, crossed gratings (output coupling), circular and Special structures such as elliptical output area, transverse Bragg grating, circular grating,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/40H01S5/42
CPCH01S5/4006H01S5/4018H01S5/423
Inventor 邹永刚田锟石琳琳马晓辉王海珠范杰徐莉海一娜白云峰
Owner CHANGCHUN UNIV OF SCI & TECH