Efficient quasiphase-matched generation of parametric fluorescence in room temperature lithium niobate waveguides

The Letter reports the first observation of waveguided, quasiphase-matched, parametric fluorescence at 1.2–2.5 μm at ambient temperature, using an 800 nm pump. Fluorescent powers of 10−15–10−14W were obtained for pump powers of 1–15 mW, an order of magnitude improvement over previous results.