Title :
Length optimization of single-mode rare-earth doped waveguides using saturated absorption
Author :
Francois, Veronique ; Ohtsuki, Tomoko ; Peyghambarian, Nasser ; Najafi, S. Iraj
Author_Institution :
Dept. de Genie Physique, Ecole Polytech., Montreal, Que., Canada
Abstract :
Absorption saturation was demonstrated to provide a high, uniform population inversion over a length of waveguide longer than the material absorption length. The small signal gain was measured experimentally in single-mode waveguides, made by silver ion exchange, on a commercially available neodymium doped glass. The ratio of the excited states was calculated as a function of waveguide length and was shown to be a convenient criteria to determine the optimum device length.<>
Keywords :
excited states; ion exchange; neodymium; optical planar waveguides; optical saturable absorption; population inversion; solid lasers; waveguide lasers; excited states; length optimization; material absorption length; optimum device length; saturated absorption; signal gain; single-mode rare-earth doped waveguides; single-mode waveguides; uniform population inversion; Absorption; Fiber lasers; Gain measurement; Glass; Laser beams; Laser excitation; Length measurement; Optical waveguides; Silver; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
