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Laser-machined, kilowatt-class cladding light strippers with stripping efficiencies > 37 dB
Optics Express
|March 18, 2026
Summary
Laser-machined cladding light strippers offer high attenuation for fiber lasers. This advancement in microstructured fiber technology provides a superior alternative to chemical etching for high-power laser systems.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Cladding light strippers are essential for fiber laser systems, removing unwanted pump light.
- Traditional methods like chemical etching have limitations for high-power applications.
Purpose of the Study:
- To improve laser-machined, microstructured cladding light strippers.
- To achieve higher cladding light attenuation and high-power stripping capability.
Main Methods:
- Utilizing raytracing simulations to optimize fiber microstructure.
- Laser-machining for fabrication of microstructured cladding light strippers.
- Characterization of stripping performance and high-power handling.
Main Results:
- Achieved cladding light attenuation up to 37.3 dB over 60 mm.
- Demonstrated high-power stripping capability up to 1.2 kW, limited by available power.
- Optimized microstructure led to homogenized stripping and increased attenuation.
Conclusions:
- Laser-machining provides an effective, high-performance alternative to chemical etching.
- Improved microstructured cladding light strippers enhance future high-power fiber laser systems.
- This technology may eliminate the need for chemical etching in stripper production.
