Thermal optimization and erasing of Nd:YAG proton beam written waveguides |
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Authors: | Benayas Antonio Dong Ningning Yao Yicun Chen Feng Bettiol Andrew Anthony Jaque Daniel |
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Affiliation: | Fluorescence Imaging Group, GIEL, Departamento de Física de Materiales, Facultad de Ciencias, International Campus of Excellence Universidad Autónoma de Madrid, Madrid 28049, Spain. antonio.benayas@uam.es |
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Abstract: | We report on how the optical and structural properties of Nd:YAG proton beam written waveguides are modified when they experienced annealing treatments from 50 °C to 950 °C. The microstructural changes caused in the vicinity of the nuclear damage region were found to be stable up to 700 °C, so that higher annealing temperatures lead to a complete waveguide erasing. Before this "erasing" temperature, the partial thermal-induced defect recombination reduces the propagation losses, reaching its minimum value (below 1 dB/cm) after a 400 °C thermal annealing. |
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