Giant optical gain in a rare-earth-ion-doped microstructure.

Geskus, Dimitri; Aravazhi, Shanmugam; García-Blanco, Sonia M; Pollnau, Markus · Adv Mater · 2012

basic_science · Level V

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Abstract

Modal gain per unit length versus launched pump power is predicted and measured in a 47.5 at.% Yb(3+) -doped potassium double tungstate channel waveguide. The highest measured gain exceeds values previously reported for rare-earth-ion-doped materials by two orders of magnitude.

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