Surface emitting laser with convertible cavity type
By introducing the electro-optical effect of convertible cavity type and electro-optical materials into the vertical cavity surface emitting laser, the laser switch between different cavity bodies is solved, and the existing laser power is small, the wavelength tuning range is small, and the line width is large is achieved, thereby realizing the power increase of the laser and the line width narrowing pressure.
CN119674708AActive Publication Date: 2025-03-21CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
7 Cites 0 Cited by
Patent Information
- Application Number
- CN202510187790.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2045-02-20
AI Technical Summary
Technical Problem
The existing vertical cavity surface emission lasers have small power and small wavelength tuning range and large line width when output in single mode.
Method used
Using a convertible cavity-type surface emitting laser, by using electro-optical materials in the resonant cavity conversion control layer, the laser switches between the first resonant cavity and the second resonant cavity based on the electro-optical effect, changes the oscillation path of the laser, and adjusts the polarization characteristics of the material.
Benefits of technology
The laser line width narrowing and wavelength tuning range are expanded, and the output power is increased while the single-mode output is output, which can achieve dual-wavelength output.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the field of semiconductor lasers, in particular to a surface emitting laser with a convertible cavity type. Comprising a resonant cavity conversion control electrode, a substrate, a dielectric film waveguide layer, a second resonant cavity active layer, an N-type electrode, a tunnel junction, a resonant cavity conversion control layer, an N-type DBR layer, a first resonant cavity active layer, an oxide layer, a P-type DBR layer and a P-type electrode which are sequentially stacked from bottom to top. The N-type DBR layer, the first resonant cavity active layer and the P-type DBR layer form a first resonant cavity; the dielectric film waveguide layer, the second resonant cavity active layer and the P-type DBR layer form a second resonant cavity; the resonant cavity conversion control layer is made of electro-optical materials. Switching of laser between the two resonant cavities can be achieved, the oscillation path of the laser in the resonant cavities is changed, meanwhile, the polarization characteristic of materials can be adjusted, and the polarization state of the laser is changed.
Need to check novelty before this filing date? Find Prior Art