Physicists in Australia have demonstrated a highly efficient 532-nm-pumped external cavity diamond Raman laser generating output mostly at the 573 nm first Stokes. According to the researchers, crystalline Raman lasers are efficient converters of pump lasers to longer wavelengths and higher beam quality. Existing Raman lasers typically use crystals of silicon, barium nitrate or metal tungstate to amplify light created by a pump laser.
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