Abstract

We demonstrated a green all-fiber laser by splicing both ends of a Pr3+-doped ZBLAN fiber to silica fibers, whose ends were coated with a dielectric thin film. The output power and the slope efficiency were 322mW and 53%, respectively, and the coupled pump power of the two blue GaN pump lasers in the silica fiber core was 652mW. We estimated that the damage threshold of the spliced structure was at least 21MW/cm2. This splicing technique should be applicable for other wavelengths and glass fibers having low melting temperatures.

© 2011 Optical Society of America

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