Total Internal Reflection End-Pumped Solar Laser with the Solar-to-Laser Conversion Efficiency of 6.09%

Lin Wang, Haiyang Zhang (), Dário Garcia, Weichen Xu, Changming Zhao and Anran Guo
Additional contact information
Lin Wang: School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
Haiyang Zhang: School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
Dário Garcia: School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
Weichen Xu: School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
Changming Zhao: School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
Anran Guo: School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China

Energies, 2025, vol. 18, issue 15, 1-18

Abstract: A novel total internal reflection solar end-pumped laser system has been introduced for the first time, aimed at enhancing the solar-to-laser conversion efficiency. Utilizing a conical solid or cavity reflector, this system refocuses sunlight from a 0.2818 m 2 parabolic mirror into a single Ce (0.05 at.%): Nd (1 at.%): YAG crystal rod, measuring 4 mm in diameter and 10 mm in length, thereby promoting total internal reflection and extending the pumping path. Simulation results indicate that under the same solar input power conditions (249.05 W), the conversion efficiencies of the conical solid reflector and cavity reflector systems are 1.2 times and 1.33 times higher than the current highest recorded efficiency of single-rod systems, respectively. At 950 W/m 2 , the conical reflector reaches 5.48% efficiency, while the cavity reflector attains 6.09%. Their collection efficiencies are 52.03 W/m 2 and 57.90 W/m 2 , with slope efficiencies of 6.65% and 7.72%.

Keywords: solar-pumped laser; laser efficiency; total internal reflection; parabolic mirror (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/18/15/4033/pdf (application/pdf)
https://www.mdpi.com/1996-1073/18/15/4033/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:18:y:2025:i:15:p:4033-:d:1712606

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().