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We present a metallic zinc indiffused diced ridge waveguide in magnesiumdoped periodically poled lithium niobate (MgO:PPLN) capable of generating over1 W of 780 nm with 70% efficiency. Our 40 mm long waveguide has near circularfundamental mode output with diameter 10.4 um and insertion loss of -1.17 dB.Using a commercial 2 W EDFA-based system, the SHG output power did not exhibitroll-off at maximum available pump power.

Zn-indiffused diced ridge waveguides in MgO:PPLN generating 1 watt 780 nm SHG at 70% efficiency