Giant optical gain in a rare-earth-ion-doped microstructure.
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.
Integrated Optical Micro Systems Group, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands.
Dimitri
D
Geskus
Shanmugam
S
Aravazhi
Sonia M
SM
García-Blanco
Markus
M
Pollnau
D000042:Absorption; D004396:Coloring Agents / Q000737:chemistry; D055616:Microtechnology / Q000379:methods*; D055620:Optical Phenomena; D011188:Potassium / Q000737:chemistry; D012666:Semiconductors; D015018:Ytterbium / Q000737:chemistry*
D004396:Coloring Agents; D015018:Ytterbium; D011188:Potassium