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Q-switched Nd:YLF laser end pumped by a diode-laser bar
Optics Letters
|September 23, 2009
Summary
We achieved 20-kW peak power from a Q-switched Neodymium-doped Yttrium Lithium Fluoride (Nd:YLF) laser. This high-power laser operation utilized a diode-laser bar for end-pumping, demonstrating efficient optical energy conversion.
Area of Science:
- Lasers and Photonics
- Solid-State Lasers
- Diode-Laser Technology
Background:
- High-power pulsed lasers are crucial for various scientific and industrial applications.
- Efficient end-pumping architectures are key to optimizing laser performance.
Purpose of the Study:
- To demonstrate high-peak-power operation of a Q-switched Nd:YLF laser.
- To investigate the efficiency of diode-laser end-pumping for Nd:YLF systems.
Main Methods:
- Utilized a 25-W quasi-continuous-wave diode-laser bar for end-pumping a Nd:YLF gain medium.
- Employed a fiber coupler to match the diode-laser's active area to the TEM(00) mode.
- Implemented Q-switching to generate short, high-energy pulses.
Main Results:
- Achieved 20-kW peak power at 1047 nm.
- Produced 0.5-mJ output energy in 22-nsec pulses.
- Attained a maximum optical slope efficiency of 13%.
Conclusions:
- Demonstrated efficient 20-kW operation of a diode-laser-pumped Q-switched Nd:YLF laser.
- Validated the effectiveness of fiber coupling for mode adaptation in laser systems.
- This work contributes to the development of compact, high-power pulsed laser sources.
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