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In this work we show the ultrafast laser fabrication of ridge waveguides in a (Yb, Nb):RbTiOPO4 (RTP) epilayer grown on a RTP substrate by liquid phase epitaxy [1]. The ribs are produced by machining trenches on the surface of the (Yb, Nb):RTP epilayer. In order to improve the verticality and roughness of the walls of the trenches, we have used the approximation scanning technique [2]. This approach...
A comprehensive experimental investigation has been conducted into the high-power continuous-wave (CW) laser performance of isostructural Yb-doped vanadates, including three ordered crystals of Yb:YVO4, Yb:GdVO4, and Yb:LuVO4, and two mixed ones with compositional disorder: Yb0.007 :Y0.407Gd0.586VO4 and Yb0.015:Lu0.52Gd0.465VO4. The CW laser operation of the different vanadates is compared under nearly...
Single-pass pumping of a thin disk consisting of a 50 mum epitaxial layer of 32% Yb-doped KLu(WO4)2 deposited on a KLu(WO4)2 substrate produced 9 W of output power near 1030 nm at 77% slope efficiency.
The new bifunctional crystal, Yb-doped RbTiOPO4 or Yb:RTP, codoped with Nb for charge compensation, combines the lasing properties of the Yb-ion with the nonlinear properties of the well-known orthorhombic crystal RTP. It is interesting for the development of compact all-solid-state laser sources in the green, by self-frequency doubling. The extremely broad tunability achieved with Yb:Nb:RTP is also...
Waveguide lasing of monoclinic KY(WO4)2:Tm3+ grown by liquid-phase epitaxy is demonstrated in the 2 mum spectral range. The maximum continuous-wave output power achieved was 32 mW in the fundamental mode.
We demonstrate output powers exceeding 4 W with continuous-wave, diode-pumped Yb:TVO4 (T=Y, Gd, and Lu) lasers operated at room temperature. The three orthovanadate hosts are compared in longitudinal and thin-disk pump geometries.
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