Abstract
Diode-pumped solid-state lasers using novel Yb:LaF3 and Tm,Ho:LaF3 crystals as laser gain materials are demonstrated herein. The Yb:LaF3 and Tm,Ho:LaF3 crystals were grown using the Bridgman method. By matching their absorption bands, continuous-wave laser operations were achieved for the first time. The Yb:LaF3 laser obtained a maximum average output power of 1.19 W with dual wavelengths of 1028 nm and 1033 nm. The maximum average output power and slope efficiency of the Tm,Ho:LaF3 laser were 574 mW and 18.5%, respectively. The Tm,Ho:LaF3 laser exhibited two peaks at 2043 nm and 2048 nm. Both the Yb:LaF3 and Tm,Ho:LaF3 crystals were confirmed to be laser gain materials.
Highlights
Diode-pumped solid-state lasers (DPSSLs) have attracted wide attention owing to their advantages including high conversion efficiency, good beam quality, long life, and compact construction [1,2]
We report two novel fluoride crystal materials: Yb:LaF3 and Tm,Ho:LaF3
Employing an output mirror with a transmission value of 2%, the Tm,Ho:LaF3 CW laser obtained a as laser gain materials to demonstrate laser as DPSSLs
Summary
Diode-pumped solid-state lasers (DPSSLs) have attracted wide attention owing to their advantages including high conversion efficiency, good beam quality, long life, and compact construction [1,2]. Thulium (Tm) and holmium (Ho) active ions have been investigated because of theirhigh luminescence emissionsAfter neardecades the 2 μm region in lasers, giving them crystals, great application potential conversion efficiency. To date, Yb:LaF crystals have not achieved luminescent properties of rare-earth ions and the excellent host advantages of fluoride crystals.laser output as solid-state materials,. 3 crystals have output as asolid-state laser gain materials, have not been reported [30].cm-1 at 973 crystals with doping concentration of 1%and hadTm,Ho:LaF a maximum absorption coefficient of 0.25. Employing an output mirror with a transmission value of 2%, the Tm,Ho:LaF3 CW laser obtained a as laser gain materials to demonstrate. Theoperations novel crystals, Yb:LaF and Tm,Ho:LaF , were used as laser gain materials to demonstrate CW laser operations as DPSSLs
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