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120-W continuous-wave diode-pumped Tm:YAG laser.
Optics Letters
|December 11, 2007
Summary
A new 120-watt continuous-wave diode-pumped Thulium-doped Yttrium Aluminum Garnet (Tm:YAG) laser was developed. This laser achieved a 25.2% optical-to-optical conversion efficiency for its 2.02-micrometer output.
Area of Science:
- Laser Physics
- Materials Science
Background:
- Diode-pumped solid-state lasers offer high efficiency and compact designs.
- Thulium-doped lasers operating near 2 micrometers are valuable for various applications.
Purpose of the Study:
- To develop a high-power, continuous-wave (cw) diode-pumped Tm:YAG laser.
- To investigate the performance and efficiency of the developed laser system.
Main Methods:
- A Tm:YAG laser rod was utilized as the gain medium.
- Side-pumping configuration employing three diode arrays.
- Compound parabolic concentrators were used for efficient radiation coupling.
Main Results:
- Achieved a maximum output power of 120 W in continuous-wave (cw) operation.
- Demonstrated a maximum optical-to-optical conversion efficiency of 25.2%.
- Recorded a slope efficiency of 31.2% for the 2.02-micrometer laser output.
Conclusions:
- The developed diode-pumped Tm:YAG laser system is capable of high-power output.
- The side-pumping architecture with compound parabolic concentrators proved effective for efficient laser operation.
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