Optical Parametric Conversion System Tunable from 0.4 μm to 4.0 μm

In this paper, an optical frequency-conversion system including KTP optical parametric oscillator (ΟΡΟ), BBO ΟΡΟ, and LiNb03 ΟΡΟ have been demonstrated. Three kinds of cavity configurations such as double right-angle prisms ring cavity, side pumping linear cavity, and noncolliear pumping off-axis linear cavity are used in BBO ΟΡΟ resonators to ensure continuously tunable without changing optics. In KTP ΟΡΟ, a nonresonant cavity is applied to achieve high energy output of signal or idler. The fre