Optical pumping vertical external cavity emitting laser with gradient band gap barrier absorption layer

A technology for emitting lasers and gradient bandgap, which is applied in the direction of lasers, laser components, semiconductor lasers, etc., can solve the problems of poor beam quality of edge-emitting semiconductor lasers, large volume of solid-state lasers, and difficulty in high-power laser output. Effects of quantum efficiency, superior collection capability, and process simplification
CN101651286BActive Publication Date: 2012-05-23INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
Publication Date
2012-05-23

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Abstract

The invention discloses an optical pumping vertical external cavity emitting laser with a gradient band gap barrier absorption layer, which is characterized by comprising a copper heat sink, a transparent heat sink, an epitaxial wafer, a pumping light source and an external cavity mirror, wherein the copper heat sink is provided with a groove; the upper surface of the transparent heat sink is evaporated with an anti-reflection film; the epitaxial wafer is connected with the lower surface of the transparent heat sink by adopting a liquid adsorption method, and the connected transparent heat sink and the epitaxial wafer are fixedly connected with the copper heat sink by a solder to accommodate the epitaxial wafer in the groove; the pumping light source at certain angle to an axis is arranged on one side of the upper surface of the transparent heat sink; and the external cavity mirror is positioned at the axis above the transparent heat sink, and the concave surface of the external cavity mirror is plated with a reflection film.
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Description

technical field

[0001] The invention belongs to the technical field of semiconductor lasers, in particular to an optically pumped vertical external cavity surface-emitting laser with a gradient bandgap potential barrier absorption layer. Background technique

[0002] Vertical external cavity surface-emitting laser is a kind of surface-emitting laser. It is a new type of device in semiconductor laser technology. , medical and national defense engineering and other fields have broad application prospects. In particular, it is easy to frequency double and form a two-dimensional array, which can achieve high-power laser output with high beam quality. These advantages make it very popular in the fields of industrial processing, solid-state laser and fiber laser pumping, and crystal frequency doubling. development prospects.

[0003] Compared with solid-state lasers, edge-emitting semiconductor lasers, and vertical-cavity surface-emitting lasers, vertical external-cavity surface...

Claims

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