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MENGTING SHAO1, YAN LIU1,* , LANLING LAN1,* , YUANYUAN ZHANG1
The hollow reflector configuration filled with a fluorescent solution (FITC) as sensitizer is proposed to enhance the output power of solar pumped single crystal fiber (SCF) lasers. A three-stage concentrator comprises parabolic mirror/off-axis parabolic mirrors, 3D-CPC, and a hollow reflector housing the SCF. When the total sunlight-receiving area of the primary concentrator is 1.2 m2 , rays tracing demonstrates that a single- and dual-end-pumped Nd:YAG SCF (Φ1×100 mm, 1 at.% doping concentration) exhibit 21.29% and 17.31% enhancements in absorbed power, respectively, compared to non-sensitized systems. In the single-end-pumped configuration, 104.58 W of solar power is absorbed by the SCF. Numerical calculations indicate that the laser output power is 31.38 W, which is 14.32% higher than that of non-sensitized systems. This provides an idea to further enhance the output power of the SCF lasers pumped by sunlight.
Solar pumped laser, Parabolic mirror, Single crystal fiber, Fluorescent sensitizer.
MENGTING SHAO, YAN LIU, LANLING LAN, YUANYUAN ZHANG, Output power improvement of solar pumped single crystal fiber laser based on hollow reflector filled with sensitizing solution, Optoelectronics and Advanced Materials - Rapid Communications, 19, 11-12, November-December 2025, pp.484-489 (2025).
Submitted at: Sept. 8, 2025
Accepted at: Dec. 2, 2025
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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