A single-mode lasing ring microcavity laser

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

Active Publication Date: 2018-05-04
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

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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  • A single-mode lasing ring microcavity laser
  • A single-mode lasing ring microcavity laser
  • A single-mode lasing ring microcavity laser

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Embodiment Construction

[0023] In order to make the object, technical scheme and advantages of the present invention clearer, below in conjunction with specific embodiment, and refer to Figure 1-Figure 5 Shown, the present invention is further described in detail.

[0024] The invention provides a ring-shaped semiconductor microcavity laser with a grating structure distributed on the inner wall. The lasing mode of the ring microcavity is selected and controlled by selecting different numbers of grating periods on the inner wall. Gratings with different period numbers have different diffraction effects on the light field of different modes in the ring. By changing the period number of the grating, only one cavity mode can be selectively maintained with a high enough quality mode, while other modes, due to the increased grating structure 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 factors are suppressed to a very lo...

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Abstract

The invention discloses a single-mode lasing ring micro-cavity laser, which comprises: a ring-shaped micro-cavity resonator, and a grating structure is distributed on the inner wall of the ring-shaped micro-cavity resonator. The grating period number of the grating structure is equal to the angular vector quantum number of the single-mode lasing mode of the single-mode lasing ring microcavity laser. The annular microcavity resonator includes an upper confinement layer, an active region and a lower confinement layer. The grating structure is vertically distributed on the inner wall of the ring microcavity resonant cavity. The ring-shaped semiconductor microcavity laser provided by the present invention diffracts light through the grating structure distributed on the inner wall of the ring, can control the outward radiation of different modes of light fields, and suppress the quality factors of all other non-laser modes , so that the ring microcavity laser can achieve stable single-mode lasing.

Description

technical field [0001] The present invention relates to the field of semiconductor lasers, in particular to an annular microcavity laser that can realize selective single-mode lasing, more specifically, the present invention relates to an annular microcavity laser with an inner wall grating, wherein the The grating structure on the inner wall can selectively suppress the quality factor of the ring microcavity mode, so that only the mode whose angular vector quantum number is equal to the period number of the grating structure can maintain a high enough quality factor, so that the ring-shaped Microcavity laser devices can selectively achieve single-mode lasing. Background technique [0002] With the rapid development of information technology, the line width of microelectronics technology is gradually approaching the physical limit, and optoelectronic integration has become one of the main goals of information technology development. The rapid development of optical informati...

Claims

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Application Information

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Patent Type & Authority Patents(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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