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Highly stable multirod side-pumped Ce:Nd:YAG solar laser with simultaneous multimode and TEM00-mode emission.

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Bibliographic Details
Title: Highly stable multirod side-pumped Ce:Nd:YAG solar laser with simultaneous multimode and TEM00-mode emission.
Authors: Tibúrcio, Bruno D.1 (AUTHOR), Liang, Dawei1 (AUTHOR) dl@fct.unl.pt, Costa, Hugo1 (AUTHOR), Almeida, Joana1 (AUTHOR), Haeussler, Anita2 (AUTHOR), Guillot, Emmanuel2 (AUTHOR), Vistas, Cláudia R.1 (AUTHOR)
Source: Optical Materials. Jun2026, Vol. 174, pN.PAG-N.PAG. 1p.
Subjects: Nd-YAG lasers, Laser beams, Laser beam measurement, Industrial lasers
Abstract: The side-pumping of Ce:Nd:YAG solar lasers provides a more uniform solar light distribution inside the active medium compared to end-side-pumping schemes, enabling the enhancement of laser power and beam profile stability. However, to the best of our knowledge, there is no report on a systematic evaluation of solar laser power and beam profile stability simultaneously, as well as the simultaneous emission of multimode and TEM 00 -mode solar laser beams from the same pump cavity, attractive for laser material processing. Therefore, we present the first multirod side-pumped solar laser at 1064 nm in simultaneous multi-regime operation from a single laser head, with enhanced laser power and beam profile stabilities. The solar laser head was sun-pumped by the heliostat-parabolic system of Procédés Matériaux et Energie Solaire – Centre National de la Recherche Scientifique (PROMES-CNRS). A total solar laser power of 7.3 W was measured, of which 5.2 W solar laser power in multimode and 2.1 W in TEM 00 -mode. Laser power stability was improved by factors of 1.07 and 1.05 for multimode emission and for the total multimode/TEM 00 -mode solar laser emissions, respectively, with enhanced beam profile stability 2.5 times higher, compared to the previous scheme. The highly stable solar laser of this work demonstrated versatility for potential applications in industrial decarbonization, such as multi-beam laser and dynamic beam shaping welding processes. • First simultaneous multimode and TEM 00 -mode Ce:Nd:YAG solar laser emissions. • Laser power and beam profile stabilities over time was studied. • Laser power and beam profile stabilities were 2.5 times higher than previous record. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The side-pumping of Ce:Nd:YAG solar lasers provides a more uniform solar light distribution inside the active medium compared to end-side-pumping schemes, enabling the enhancement of laser power and beam profile stability. However, to the best of our knowledge, there is no report on a systematic evaluation of solar laser power and beam profile stability simultaneously, as well as the simultaneous emission of multimode and TEM 00 -mode solar laser beams from the same pump cavity, attractive for laser material processing. Therefore, we present the first multirod side-pumped solar laser at 1064 nm in simultaneous multi-regime operation from a single laser head, with enhanced laser power and beam profile stabilities. The solar laser head was sun-pumped by the heliostat-parabolic system of Procédés Matériaux et Energie Solaire – Centre National de la Recherche Scientifique (PROMES-CNRS). A total solar laser power of 7.3 W was measured, of which 5.2 W solar laser power in multimode and 2.1 W in TEM 00 -mode. Laser power stability was improved by factors of 1.07 and 1.05 for multimode emission and for the total multimode/TEM 00 -mode solar laser emissions, respectively, with enhanced beam profile stability 2.5 times higher, compared to the previous scheme. The highly stable solar laser of this work demonstrated versatility for potential applications in industrial decarbonization, such as multi-beam laser and dynamic beam shaping welding processes. • First simultaneous multimode and TEM 00 -mode Ce:Nd:YAG solar laser emissions. • Laser power and beam profile stabilities over time was studied. • Laser power and beam profile stabilities were 2.5 times higher than previous record. [ABSTRACT FROM AUTHOR]
ISSN:09253467
DOI:10.1016/j.optmat.2026.117888