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Cr:LiSAF Laser Yields Femtosecond Blue Pulses Blue Pulses

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A femtosecond Cr:LiSAF laser emitting 12 mW of blue light has achieved much higher electrical-to-optical efficiencies than Ti:sapphire sources. Demonstrated by researchers at St. Andrews University in the UK, the laser converted 1 percent of its 1.2-W electrical drive into 429-nm light. Ti:sapphire lasers, in comparison, convert only about 0.05 percent of input into near-infrared output. As reported in the Aug. 12 issue of Optics Express, the St. Andrews researchers used relatively thick (3- to 5-mm) KNbO3 crystals in a single-pass, extracavity arrangement to double the laser's 860-nm...Read full article

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    Published: September 2002
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