TY - JOUR
T1 - Lowest threshold solar-pumped Ce:Nd:YAG laser with 2.06% solar-to-TEM00 mode laser conversion efficiency
AU - Liang, Dawei
AU - Almeida, Joana
AU - Catela, Miguel
AU - Costa, Hugo
AU - Garcia, Dário
AU - Tibúrcio, Bruno D.
AU - Guillot, Emmanuel
AU - Vistas, Cláudia R.
N1 - info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00068%2F2020/PT#
info:eu-repo/grantAgreement/FCT//PD%2FBD%2F142827%2F2018/PT#
info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBPD%2F125116%2F2016/PT#
info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F145322%2F2019/PT#
info:eu-repo/grantAgreement/FCT//2021.06172.BD/PT#
info:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F03081%2F2017%2FCP1462%2FCT0001/PT#
Financial support of the strategic project (UIDB/00068/2020) of the Science and Technology Foundation of the Portuguese Ministry of Science, Technology and Higher Education (FCT – MCTES) is acknowledged. Financial support by the Solar Facilities for European Research Area – Third Phase (SFERA III), Grant Agreement No. 823802 is gratefully acknowledged. The FCT-MCTES fellowship grants PD/BD/ 142827/2018, SFRH/BPD/125116/2016, SFRH/BD/145322/2019,
2021.06172.BD of D. Garcia, C. R. Vistas, M. Catela, H. Costa, respectively, and the Contract CEECIND/03081/2017 of J. Almeida are all acknowledged
PY - 2024/6/15
Y1 - 2024/6/15
N2 - A solar-pumped laser with bulk active medium generally requires a considerable amount of concentrated solar power for initiating laser emission. In previous work, 54.9 W threshold incoming solar power was found for a Ce:Nd:YAG solar laser by a 0.075 m2 effective area parabolic mirror. In the present work, a 0.0615 m2 area Fresnel lens was used to concentrate incoming solar power to a 2 mm diameter, 30 mm length Ce:Nd:YAG rod. 1.81 W continuous-wave 1064 nm solar laser output power was measured, corresponding to 3.15% solar-to-laser conversion efficiency, 4.4% laser slope efficiency, and 29.4 W/m2 collection efficiency. More importantly, threshold incoming solar power as low as 16.5 W was achieved, representing a 3.33 times reduction in threshold solar power, as compared to previous record by the parabolic mirror. By using a 0.0855 m2 area Fresnel lens, 2.83 W solar laser power was also measured, leading to 3.56% solar-to-laser conversion efficiency, 4.9% laser slope efficiency, and 33.1 W/m2 collection efficiency. Low threshold incoming solar power of 22.7W was also obtained, representing a 2.42 times reduction in threshold solar power in relation to the previous record. Notably, 1.41 W TEM00 mode solar laser power was also measured by adopting an asymmetric laser resonant cavity, resulting in 2.06% solar-to-TEM00 mode laser conversion efficiency, which, to the best of our knowledge, is 2.61 times larger than the previous record by Nd:YAG medium.
AB - A solar-pumped laser with bulk active medium generally requires a considerable amount of concentrated solar power for initiating laser emission. In previous work, 54.9 W threshold incoming solar power was found for a Ce:Nd:YAG solar laser by a 0.075 m2 effective area parabolic mirror. In the present work, a 0.0615 m2 area Fresnel lens was used to concentrate incoming solar power to a 2 mm diameter, 30 mm length Ce:Nd:YAG rod. 1.81 W continuous-wave 1064 nm solar laser output power was measured, corresponding to 3.15% solar-to-laser conversion efficiency, 4.4% laser slope efficiency, and 29.4 W/m2 collection efficiency. More importantly, threshold incoming solar power as low as 16.5 W was achieved, representing a 3.33 times reduction in threshold solar power, as compared to previous record by the parabolic mirror. By using a 0.0855 m2 area Fresnel lens, 2.83 W solar laser power was also measured, leading to 3.56% solar-to-laser conversion efficiency, 4.9% laser slope efficiency, and 33.1 W/m2 collection efficiency. Low threshold incoming solar power of 22.7W was also obtained, representing a 2.42 times reduction in threshold solar power in relation to the previous record. Notably, 1.41 W TEM00 mode solar laser power was also measured by adopting an asymmetric laser resonant cavity, resulting in 2.06% solar-to-TEM00 mode laser conversion efficiency, which, to the best of our knowledge, is 2.61 times larger than the previous record by Nd:YAG medium.
KW - Ce:Nd:YAG
KW - End-side-pumping
KW - Fresnel lens
KW - Low-threshold
KW - Solar laser
UR - http://www.scopus.com/inward/record.url?scp=85188081128&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2024.112817
DO - 10.1016/j.solmat.2024.112817
M3 - Article
AN - SCOPUS:85188081128
SN - 0927-0248
VL - 270
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
M1 - 112817
ER -