Abstract
The green-induced infrared absorption (GRIIRA) effect in annealed proton-exchanged (APE) MgO-doped () waveguides was investigated experimentally. By directly measuring the green-light-induced transmittance change in the waveguides, the GRIIRA coefficients of the waveguides were studied at a light power density level of several . GRIIRA effects in APE and nondoped waveguides were compared. The GRIIRA-induced temperature gradient from the waveguide core to the ambient environment was simulated using the measured results. Potential impacts of such temperature gradients on -based green lasers have been discussed. Optimization temperature control methods have also been discussed.
© 2014 Optical Society of America
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