Mirian, N.S. Hayashi, K. Hosaka, M. Katoh, M. Konomi, T. Takashima, Y. Yamamoto, N. Yamazaki, J. Zen, H. MOP012 laser radiation experiment undulator electron 2015 2015-12 Construction and development of a source development station are in progress at UVSOR-III, a 750 MeV electron storage ring. It is equipped with an optical klystron type undulator system, a mode lock Ti:Sa Laser system, a dedicated beam-line for visible-VUV radiation and a parasitic beam-line for THz radiation. New light port to extract edge radiation was constructed recently. An optical cavity for a resonator free electron laser is currently being reconstructed. Some experiments such as coherent THz radiation, coherent harmonic radiation, laser Compton Scattering gamma-rays and optical vortices are in progress.