ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China (No.60677051 and No.10774193) and the National Key Basic Research Special Foundation (No.G2010CB923204).
A wide-range and phase-locked Michelson interferometer technique is described. This technique combined with femtosecond laser is used to measure the spectrum of the rare-earth ion Nd:YVO4, which presents very high si...