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89.29 W solar-pumped Ce:Nd:YAG lasers with a solar-to-laser conversion efficiency of 3.96
Optics Express
|November 11, 2025
Summary
Researchers developed a high-power solar-pumped laser using a Ce:Nd:YAG crystal. This system achieved a record 89.29 W output power and 3.96% solar-to-laser conversion efficiency, significantly advancing solar laser technology.
Area of Science:
- Laser Physics
- Renewable Energy Technologies
- Materials Science
Background:
- Solar-pumped lasers offer a sustainable alternative for laser generation.
- Previous systems faced limitations in power output and conversion efficiency.
Purpose of the Study:
- To develop a high-power and highly efficient solar-pumped laser system.
- To improve solar-to-laser conversion efficiency using a Ce:Nd:YAG crystal.
Main Methods:
- Utilized a Fresnel lens (2.73 m²) for solar radiation collection.
- Employed side-end mixed pumping of a 7 mm diameter, 90 mm length Ce:Nd:YAG crystal rod.
- Operated under a solar irradiance of 825 W/m².
Main Results:
- Achieved a continuous laser output of 89.29 W at 1064 nm.
- Attained a solar-to-laser conversion efficiency of 3.96%.
- Demonstrated a collection efficiency of 32.71 W/m².
Conclusions:
- The system significantly surpasses previous records for Ce:Nd:YAG solar lasers in output power and conversion efficiency.
- This high-performance system represents a breakthrough in solar laser generation, particularly for Fresnel lens and single-rod configurations.
