Stimulated emission at 2.04 µm in Ho³⁺-doped ErVO₄and YVO₄

Abstract

We have observed both CW and pulsed laser operation in Ho <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> -doped ErVO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> and YVO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> at 2.0416 μm and 2.0412 μm, respectively. Both laser emissions are linearly polarized. For this preliminary experiment the crystals were cooled to liquid nitrogen temperature and pumped in two configurations using an argon-ion laser and a xenon flashlamp.