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High-power continuous-wave cladding-pumped Raman fiber laser.
C A Codemard1, P Dupriez, Y Jeong
1Optoelectronics Research Centre, University of Southampton, SO 17 1BJ, England.
Optics Letters
|July 13, 2006
Summary
Researchers developed a high-power, single-mode Raman fiber laser. This laser achieves 10 W output power at 1660 nm with 67% slope efficiency.
Area of Science:
- Photonics
- Fiber Optics
- Laser Technology
Background:
- Raman fiber lasers offer unique wavelength generation capabilities.
- High-power, single-mode operation is crucial for various applications.
- Cladding-pumped architectures enhance power scalability.
Purpose of the Study:
- To demonstrate a high-power, single-mode cladding-pumped Raman fiber laser.
- To achieve efficient power conversion and stable single-mode output.
- To explore the performance of germanium-doped double-clad fiber in a linear cavity.
Main Methods:
- Utilized a 1.2 km germanium-doped double-clad fiber in a linear cavity.
- Employed end-pumping with a multimode erbium-ytterbium-doped fiber laser.
- Designed the fiber core for single-mode operation at the Raman Stokes wavelength.
Main Results:
- Achieved up to 10 W of output power at 1660 nm from a single-mode fiber end.
- Demonstrated a high slope efficiency of 67%.
- Observed a low threshold power of 6.5 W.
Conclusions:
- The developed cladding-pumped Raman fiber laser is a viable high-power, single-mode source.
- The design effectively combines power scalability with single-mode beam quality.
- This laser technology has potential for applications requiring specific wavelengths in the 1660 nm range.