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Single-mode lasing circular micro-cavity laser

A laser, single-mode technology, applied in the field of single-mode lasing ring microcavity lasers, can solve the problems of influence, output beam quality and time stability, and achieve the effect of effective selection

Active Publication Date: 2015-10-21
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

Due to limited material gain, multimode lasing can cause competition between modes, which can adversely affect both output beam quality and temporal stability

Method used

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  • Single-mode lasing circular micro-cavity laser
  • Single-mode lasing circular micro-cavity laser
  • Single-mode lasing circular micro-cavity laser

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Embodiment Construction

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following specific embodiments are combined with reference to Figure 1-Figure 5 As shown, the present invention will be described in further detail.

[0024] The invention provides a ring-shaped semiconductor microcavity laser with grating structures distributed on the inner wall, and the lasing mode of the ring-shaped microcavity is selected and controlled by selecting different number of inner wall grating periods. Gratings with different numbers of periods have different diffraction effects on the light field of different modes in the ring. By changing the number of grating periods, it is possible to selectively make only one cavity mode maintain a sufficiently high quality mode, while for other modes, the grating structure increases The radiation of their light field to the outside of the cavity causes more light to leak out of the cavity, so that their quality fa...

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Abstract

The invention discloses a single-mode lasing circular micro-cavity laser comprising a circular micro-cavity resonant cavity. A grating structure is distributed on the inner wall of the circular micro-cavity resonant cavity. The number of grating periods of the grating structure is equal to the number of angle vectors of the single-mode lasing mode of the single-mode lasing circular micro-cavity laser. The circular micro-cavity resonant cavity includes an upper limiting layer, an active region, and a lower limiting layer. The grating structure is vertically distributed on the inner wall of the circular micro-cavity resonant cavity. According to the circular semiconductor micro-cavity laser provided by the invention, by using the grating structure distributed on the circular inner wall to diffract light, outward radiation of light fields of different modes can be controlled, and quality factors of all other non-lasing modes can be restrained. Therefore, the circular micro-cavity laser can achieve stable single-mode lasing.

Description

Technical field [0001] The present invention relates to the field of semiconductor lasers, in particular to a circular ring microcavity laser capable of selective single-mode lasing. More specifically, the present invention relates to a circular ring microcavity laser with inner wall gratings, which are distributed in the ring The grating structure of the inner wall can selectively suppress the quality factor of the ring-shaped microcavity mode, so that only the mode with the same number of angular vectors and the number of periods of the grating structure can maintain a sufficiently high quality factor, making this ring-shaped Microcavity laser devices can selectively realize single mode lasing. Background technique [0002] With the rapid development of information technology, the line width of microelectronics is gradually approaching the physical limit. Optoelectronic integration has become one of the main goals of the development of information technology. The rapid developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/10
Inventor 金鑫黄永箴肖金龙杨跃德
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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