5.5 W continuous-wave TEM00-mode Nd:YAG solar laser by a light-guide/2V-shaped pump cavity

Joana Almeida, Dawei Liang, Cláudia R. Vistas, Rochdi Bouadjemine, Emmanuel Guillot

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


A significant progress in TEM00-mode solar laser power and efficiency with heliostat–parabolic mirror system is reported here. A double-stage light-guide/2V-shaped pump cavity is used to efficiently couple and redistribute the concentrated pump light from a 2-m-diameter parabolic mirror to a 4-mm-diameter, 30-mm-length, 1.1 at.% Nd:YAG single-crystal rod. The light guide with large rectangular cross section enables a stable uniform pumping profile along the laser rod, resulting also in an enhanced tracking error compensation capacity. 5.5 W cw TEM00-mode solar laser power was measured at the output of a thermally near unstable asymmetric resonator. 150 and 157 % improvement in TEM00-mode solar laser collection efficiency and slope efficiency were obtained, respectively.

Original languageEnglish
Pages (from-to)473-482
Number of pages10
JournalApplied Physics B: Lasers and Optics
Issue number4
Publication statusPublished - 1 Dec 2015


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