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Volume Bragg grating narrowed high-power and highly efficient cladding-pumped Raman fiber laser
Applied Optics
|January 22, 2015
Summary
This study demonstrates a high-power, efficient single-mode Raman fiber laser. Spectral narrowing achieved 10.4 W output power with a narrow 0.1 nm linewidth at 1658 nm.
Area of Science:
- Optics and Photonics
- Laser Physics
- Fiber Lasers
Background:
- Raman fiber lasers are crucial for various applications requiring specific wavelengths.
- Achieving high power and narrow spectral bandwidth simultaneously presents a significant challenge.
Purpose of the Study:
- To demonstrate a high-power, highly efficient single-mode cladding-pumped Raman fiber laser.
- To achieve spectral narrowing for precise wavelength applications.
Main Methods:
- Utilized a cladding-pumped Raman fiber laser architecture.
- Incorporated an external cavity with a volume Bragg grating for spectral narrowing.
- Evaluated lasing characteristics under different operating conditions.
Main Results:
- Achieved a maximum output power of 10.4 W at 1658.3 nm.
- Obtained a narrow spectral linewidth (Full Width at Half Maximum) of approximately 0.1 nm.
- Demonstrated a high slope efficiency of 109% with respect to launched pump power.
Conclusions:
- The developed Raman fiber laser offers high power and excellent spectral quality.
- The external cavity with a volume Bragg grating is effective for spectral narrowing.
- This laser system is suitable for applications demanding narrow bandwidth and high output power.
