Herr, Simon J.Simon J.HerrBuse, KarstenKarstenBuseBreunig, IngoIngoBreunig2022-03-132022-03-132018https://publica.fraunhofer.de/handle/publica/39981110.1117/12.2288341We report lasing at 1064 nm in an LED-pumped high-Q whispering-gallery resonator (WGR) made from Nd:YVO4. A single LED is sufficient to achieve quasi-cw operation. Furthermore, self-pumped three-wave-mixing is demonstrated in high-Q WGRs made from laser-active lithium niobate. When pumping the resonator with a free-running laser diode without any external frequency stabilization, self-frequency doubling of the 1.08-mm laser line into the green spectral region is observed. With the application of quasi-phase matching techniques, the nonlinear optical processes can be selected at will, which enables compact and versatile self-pumped frequency synthesizers. As a proof-of-principle experiment, self-pumped optical parametric oscillation is demonstrated in a radially poled WGR made from neodymium-doped lithium niobate.enwhispering Gallery Resonatornonlinear opticharmonic generationLaser621conference paper