Tm YAG crystal-derived double-clad fibers – A hybrid approach towards high gain and high efficiency Tm lasers
Citation
Leich, M., Müller, R., Unger, S., Schwuchow, A., Dellith, J., Lorenz, A., Kobelke, J., & Jäger, M. (2022). Tm:YAG crystal-derived double-clad fibers – A hybrid approach towards high gain and high efficiency Tm lasers. Optical Materials: X, 15, 100179. https://doi.org/10.1016/j.omx.2022.100179
Keywords
- Tm-doped fiber
- Double-clad fiber
- Fiber laser
- Molten Core Method (MCM)
- Tm:YAG crystal
- Fused silica
- High gain
- High efficiency
- Slope efficiency
- Output power
- Cladding pumping
- NIR range
- 2 μm wavelength
- Cross-relaxation
- Amorphous core glass
- Optical absorption
- Emission spectra
- Fiber properties
- Fabrication process
- Laser properties
- MCVD fiber
Brief
This article investigates a hybrid approach using the Molten Core Method (MCM) to fabricate double-clad fibers with a Tm:YAG crystal-derived core within a fused silica tube and evaluates their potential for efficient high-power thulium fiber lasers.
Summary
This study successfully fabricated double-clad fibers with a core derived from Tm:YAG crystals using the Molten Core Method (MCM) within a fused silica tube. These fibers demonstrated promising laser performance under 790 nm cladding pumping, achieving a high slope efficiency of 47% and an output power of 4 W. The results indicate that this hybrid approach is a promising route for creating efficient and high-gain Tm-doped fibers for laser applications in the 2 μm wavelength range
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