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ZIRUN LIU1, YUANYUAN ZHANG1, LANLING LAN1,* , YAN LIU1,* , JUNJUN TAN2
To achieve pulse output with several-nanosecond width of solar laser, a solar-pumped passively Q-switched laser (PQL) based on a short single crystal fiber (SCF) is proposed. The side-pumping of Nd:YAG SCF (Φ1 mm × 20 mm) can be achieved with a three-stage solar concentrator which consists of a rectangular parabolic mirror, a 2D-CPC and a 2V-shaped reflector. The solar power absorbed by the SCF can reach 40 W based on ray tracing with TracePro software. The output characteristics of SCF lasers are compared with different Q-switch elements (Cr4+:YAG and V3+:YAG). When the initial transmittance of Cr4+:YAG and the output coupler reflectivity are 90% and 35%, the minimum output pulse width reaches 5.2 ns, which is less than that of the previously reported solar-pumped PQLs. This concentrator system and short SCF provide ideas for several-nanosecond pulse output generation of solar laser.
Solar pumped laser, Fiber laser, Passively Q-switched, Single crystal fiber, Solar concentrator.
ZIRUN LIU, YUANYUAN ZHANG, LANLING LAN, YAN LIU, JUNJUN TAN, Solar-pumped passively Q-switched single crystal fiber lasers with several-nanosecond pulse width, Optoelectronics and Advanced Materials - Rapid Communications, 19, 7-8, July-August 2025, pp.311-317 (2025).
Submitted at: Dec. 30, 2024
Accepted at: Aug. 4, 2025
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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