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High-power diode-cladding-pumped Tm-doped silica fiber laser
Optics Letters
|December 20, 2007
Summary
This study reports a high-power, diode-pumped, thulium-doped fiber laser. The laser achieved 5.4 W output power with tunable wavelengths near 2 micrometers.
Area of Science:
- Laser Physics
- Materials Science
- Optical Engineering
Background:
- Thulium (Tm)-doped silica fiber lasers are crucial for applications requiring specific wavelengths.
- Cladding-pumping arrangements offer advantages for high-power fiber laser development.
- Understanding laser performance and potential limitations like ion clustering is essential.
Purpose of the Study:
- To demonstrate a diode-pumped Tm-doped silica fiber laser using cladding-pumping.
- To characterize the laser's output power, efficiency, and wavelength tunability.
- To investigate potential performance limitations, such as self-pulsations.
Main Methods:
- Utilized a diode-pumped Tm-doped silica fiber laser.
- Employed a cladding-pumping configuration.
- Measured output power, slope efficiency, optical-to-optical efficiency, and wavelength tunability.
- Analyzed output characteristics for self-pulsations.
Main Results:
- Achieved a maximum output power of 5.4 W.
- Obtained a slope efficiency of 31% and an optical-to-optical efficiency of 22%.
- Tuned the output wavelength between 1.880 and 2.033 micrometers, with over 4 W available from 1.94 to 2.01 micrometers.
- Detected self-pulsations in the laser output.
Conclusions:
- The developed cladding-pumped Tm-doped fiber laser provides high-power, tunable output near 2 micrometers.
- The observed self-pulsations may suggest the presence of ion-clustering effects in the Tm-doped fiber.
- This laser technology holds promise for various spectroscopic and medical applications.
