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Opt Express. 2010 Nov 22;18(24):24994-9. doi: 10.1364/OE.18.024994.

70% slope efficiency from an ultrafast laser-written Nd:GdVO4 channel waveguide laser.

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  • 1School of Physics, Shandong University, Jinan 250100, China.


We report high efficiency continuous wave laser oscillations at 1063.6 nm from an ultrafast laser written Nd(3+):GdVO4 channel waveguide under the 808 nm optical excitation. A record 17 mm·s(-1) writing speed was used while the low propagation loss of the waveguide (~0.5 dB·cm(-1)) enabled laser performance with a threshold pump power as low as 52 mW and a near to quantum defect limited laser slope efficiency of 70%.

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