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Opt Express. 2009 Jan 19;17(2):810-8.

All-solid-state parametric Raman anti-Stokes laser at 508 nm.

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MQ Photonics Research Centre, Department of Physics, Macquarie University, NSW 2109, Australia.


We report a parametric anti-Stokes Raman laser using potassium gadolinium tungstate, generating output chiefly at the first anti-Stokes at 508 nm. The compact 4.5 cm long device is pumped by a Q-switched 532 nm laser and uses an off-axis Stokes resonator to provide non-collinear phase matching between the pump and the generated Stokes and anti-Stokes fields. Anti-Stokes output energies up 0.27 mJ were obtained at a conversion efficiency from the pump of 0.46%. Second- and third-order anti-Stokes lines at 486 nm and 465 nm were also observed.

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