Side-pumped solar Nd-doped fiber laser based on off-axis parabolic mirror array

Simulation of solar-pumped multicore Nd3+-doped silica fiber lasers

“…To do this, they used a parabolic mirror as the primary concentrator, a 3D compound parabolic concentrator as the secondary concentrator, and a hollow reflector as a pump chamber. In the same year, Pan Guo et al numerically showed 30 that 490.8 W of sunlight through a parabolic concentrator was absorbed by a Nd 3þ -doped fiber core according to ray-tracing simulations. A laser output power of 12.2 W was obtained and the optical-to-optical conversion efficiency relative to absorbed power reached 2.48%.…”

“…In the same year, Pan Guo et al. numerically showed 30 that 490.8 W of sunlight through a parabolic concentrator was absorbed by a Nd3+-doped fiber core according to ray-tracing simulations. A laser output power of 12.2 W was obtained and the optical-to-optical conversion efficiency relative to absorbed power reached 2.48%.…”

Highly efficient end-side-pumping approach of Nd:YAG solar laser with off-axis mirror concentrator

“…To address these issues, off-axis parabolic mirrors serve as alternative primary concentrators. 16,19,[23][24][25] In this study, we propose an end-side pumped solar laser concept using an off-axis primary concentrator to enhance laser output efficiency. The off-axis mirror, with a collection area of 0.785 m 2 , efficiently collects and concentrates solar rays toward the laser head.…”

“…Additionally, the use of Fresnel lenses often results in a large spot size of concentrated rays at the focal zone. To address these issues, off-axis parabolic mirrors serve as alternative primary concentrators 16 , 19 , 23 – 25 …”

Solar side-pumped Nd-doped fiber laser based on a doughnut-shaped hollow reflector

“…The output power of 2.6 W was obtained with a slope efficiency of 3.7%. In 2022, a side-pumped solar Nd-doped fiber laser based on off-axis parabolic mirrors array was proposed [22]. The fan-annular parabolic mirrors, three-dimensional compound parabolic concentrators (3D-CPCs) and a hollow reflector make up the concentrating system.…”