Abstract
A continuous-wave (cw), intra-cavity singly resonant optical parametric oscillator (SRO) has been demonstrated. The SRO is based on 5 mol% MgO-doped periodically poled lithium niobate (MgO:PPLN) pumped by a diode-pumped Nd:YVO4 ring laser. For linear polarization operation of the Nd:YVO4 ring laser, the system does not need a polarizer. When unidirectional operation is obtained for the Nd:YVO4 ring laser, the SRO is able to generate light with idler wavelengths ranging from 2.9 to 4.1 μm with a narrow line width. The idler output power is about 470 mW at 3.87 μm with a line width of 0.07 nm.
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