Green laser
By employing a resonant cavity structure composed of narrowband high-reflection fiber gratings and narrowband low-reflection fiber gratings in a green laser, combined with multi-clad fiber and pump source, and frequency doubling of the output non-polarization-maintaining fundamental frequency light, the problems of complex structure and high cost of green lasers are solved, and high-power, low-cost green light output is achieved.
CN224305158UActive Publication Date: 2026-05-29SHENZHEN UNIV
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Patent Information
- Application Number
- CN202521719011.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2026-05-29
- Estimated Expiration
- 2035-08-13
AI Technical Summary
Technical Problem
Existing green lasers have complex structures, high costs, and poor wavelength stability, and are greatly affected by factors such as temperature and current.
Method used
A resonant cavity structure consisting of a narrowband high-reflection fiber grating and a narrowband low-reflection uniform fiber grating is adopted. Combined with multi-clad fiber and pump source, the output non-polarity-maintaining fundamental frequency light is pumped through a beam combiner and then frequency-doubled. Nonlinear effect is suppressed by a nonlinear effect suppressor and a low-cost device design is adopted.
Benefits of technology
It achieves narrow linewidth, high-power green light output, reduces the overall cost of green lasers, and improves wavelength stability and beam quality.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to a green laser, comprising a resonant cavity used for generating non-polarization-maintaining fundamental frequency light; and the frequency multiplication unit is used for carrying out frequency multiplication on the non-polarization-maintaining fundamental frequency light and then outputting green laser. The resonant cavity is internally provided with a narrow-band high-reflectivity fiber grating, a second end of which is connected with a signal fiber of the first pumping beam combiner; a tail fiber of the first pumping source is connected with a pumping fiber of the first pumping beam combiner; the first pumping beam combiner is used in the forward direction; the first end of the multi-cladding optical fiber is connected with the output fiber of the first pumping beam combiner, and the second end of the multi-cladding optical fiber is connected with the input fiber of the second pumping beam combiner; the second pump beam combiner is used reversely; a tail fiber of the second pumping source is connected with a pumping fiber of the second pumping beam combiner; the first end of the narrow-band low-reflection uniform fiber bragg grating is connected with an output fiber of the second pumping source; the input end of the optical power stripper is connected with the second end of the narrow-band low-reflection uniform fiber grating; and a high-power output head. The device can output green laser, and is simple in structure and low in cost.
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