Abstract
We present a widely tunable low-threshold optical parametric oscillator. The oscillator cavity is formed by butt coupling dichroic mirrors to either end of a highly nonlinear index-guiding photonic crystal fiber. This yields a singly resonant Fabry–Perot oscillator with a high feedback fraction for the resonant parametric sideband. The tuning range of the output parametric sideband stretches from 23 to above the pump frequency. The threshold power of the oscillator is only .
© 2008 Optical Society of America
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