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A kind of laser structure and its preparation method and application

A laser and grating structure technology, applied in the direction of lasers, semiconductor lasers, optical resonant cavity structures, etc., can solve problems such as poor laser power and single-mode characteristics, bulky light source system, poor wavelength adjustment stability, etc., to achieve maximum flexibility, Simplify the epitaxy process and ensure high effect

Active Publication Date: 2022-02-01
VERTILITE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since the above technologies require complex optical system construction, the stability of wavelength adjustment is poor.
The light source system is bulky and expensive
The laser power and single-mode characteristics are poor, the performance is unstable, and the manufacturing process is difficult

Method used

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  • A kind of laser structure and its preparation method and application
  • A kind of laser structure and its preparation method and application
  • A kind of laser structure and its preparation method and application

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Embodiment Construction

[0046] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0047] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual impleme...

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Abstract

The present invention proposes a laser structure and its preparation method and application. The laser structure includes: a substrate; an epitaxial layer arranged on the substrate. a cladding layer and an ohmic contact layer; a ridge waveguide formed on the upper cladding layer; a first Bragg grating formed on the upper cladding layer and located on one side of the ridge waveguide; a second Bragg grating, It is formed on the upper cladding layer and located on the other side of the ridge waveguide; wherein, the grating structure of the first Bragg grating is different from the grating structure of the second Bragg grating. The laser provided by the invention has a stable structure, low optical loss, simple and easy process, and can effectively improve the signal strength, stability and spectral quality of the terahertz wave light source.

Description

technical field [0001] The invention relates to the technical field of semiconductor lasers, in particular to a laser structure and its preparation method and application. Background technique [0002] Lasers show great application prospects in the field of terahertz wave (THz) radiation due to their narrow spectral width and stable optical performance. At present, the use of difference frequency technology to generate THz waves has been widely used, such as external cavity optical modulation, double distributed feedback semiconductor laser (DFB-LD) light source technology, etc., all use difference frequency technology to obtain THz waves. [0003] However, since the above technologies require complex optical system construction, the stability of wavelength adjustment is poor. The light source system is bulky and expensive. The laser power and single-mode characteristics are poor, the performance is unstable, and the manufacturing process is difficult. Therefore, it is ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/10H01S5/12H01S5/22
CPCH01S5/1096H01S5/1228H01S5/1237H01S5/22
Inventor 李齐柱毛明明周特张鹏飞徐真真
Owner VERTILITE CO LTD
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