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LD bar corner-pumped TEM00 CW composite Nd:YAG laser
Song Gao1, Huan Liu, Dongsheng Wang
1State Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing, China.
Optics Express
|December 10, 2009
Summary
This study demonstrates a corner-pumped laser design using Nd:YAG composite slab crystals, achieving high efficiency and excellent beam quality. The optimized configuration ensures efficient pump absorption and uniform distribution for superior laser performance.
Area of Science:
- Laser Physics
- Materials Science
Background:
- Nd:YAG composite slab lasers are crucial for high-power applications.
- Optimizing pump absorption and beam quality is essential for laser efficiency.
Purpose of the Study:
- To investigate the impact of different parameters on pump absorption efficiency and distribution in LD corner-pumped Nd:YAG lasers.
- To achieve TEM(00) operation with high output power and good beam quality.
Main Methods:
- Utilized a ray-tracing algorithm to simulate pump absorption characteristics.
- Conducted resonator experiments to suppress higher-order modes and achieve fundamental mode operation.
Main Results:
- Achieved an output power of 11.94 W with an optical-optical efficiency exceeding 26%.
- Obtained M2 beam quality factors of 1.18 (width) and 1.34 (thickness).
- Demonstrated high pump efficiency and uniform pump distribution in the corner-pumped configuration.
Conclusions:
- The corner-pumped configuration is effective for achieving high-efficiency laser output with good beam quality.
- Optimized pump absorption and uniformity contribute to superior laser performance.
