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Compact scalable diode-pumped Nd:YAG ceramic slab laser
Marco Ciofini1, Antonio Lapucci
1Istituto Nazionale di Ottica Applicata, Largo E Fermi 6, 50125 Florence, Italy.
Applied Optics
|December 21, 2004
Summary
Researchers developed compact, high-power solid-state lasers using neodymium-doped ceramic YAG. These lasers achieved over 160 W output, with potential for scaling to 900 W continuous-wave power.
Area of Science:
- Materials Science
- Laser Physics
- Optical Engineering
Background:
- Solid-state lasers are crucial for various applications requiring high power and precise beams.
- Developing compact and rugged laser systems is essential for field deployment and advanced research.
- Neodymium-doped YAG (Neodymium-doped Yttrium Aluminum Garnet) is a well-established gain medium, but ceramic forms offer advantages in fabrication and thermal management.
Purpose of the Study:
- To investigate the feasibility of using neodymium-doped slab-shaped ceramic YAG media for constructing compact, high-power diode-pumped solid-state lasers.
- To evaluate the performance characteristics, including output power and beam quality, of a prototype laser head.
- To assess the scalability of the developed laser system for higher power output.
Main Methods:
- Fabrication of slab-shaped laser media using neodymium-doped ceramic YAG.
- Construction of a compact laser head integrating the ceramic YAG medium and diode pumping.
- Experimental characterization of laser performance in a quasi-continuous-wave (QCW) regime.
- Utilizing finite-elements method (FEM) simulations to predict power scaling capabilities.
Main Results:
- A maximum extraction of over 160 W was achieved with a 20% slope efficiency.
- A narrow transverse direction beam-parameter product of approximately 4 mm mrad was obtained.
- The experimental laser head was extremely simple and compact, with overall dimensions of 160 mm x 100 mm x 60 mm.
- FEM simulations suggest potential for scaling power extraction to at least 900 W in a continuous-wave (CW) regime.
Conclusions:
- Neodymium-doped slab-shaped ceramic YAG is a promising material for building compact, rugged, high-power diode-pumped solid-state lasers.
- The demonstrated laser head design shows excellent performance and significant potential for power scaling.
- Further development could lead to robust laser systems suitable for demanding applications requiring high output power and good beam quality.