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Ti:sapphire laser intracavity difference-frequency generation of 30 mW cw radiation around 45μm
A cw mid-IR coherent source based on difference-frequency generation is designed and characterized. For mid-IR generation, a periodically poled MgO:LiNbO 3 crystal is placed inside a compact Ti:sapphire laser cavity. This provides high-power pump radiation for the nonlinear process. Optical injection by an external-cavity diode laser ensures single-frequency operation of the Ti:sapphire laser, while signal radiation is provided by a fiber-amplified Nd:YAG laser. Mid-IR radiation can bedoi:10.1364/ol.35.003616 pmid:21042368 fatcat:vxtawlowkvdhloqdity2hvsosa