Ogawa, I., Nozu, H., Itakura, Y., Idehara, T., Pavlichenko, R., Wagner, D., et al. (2003). Generation of high mode purity output of a gyrotron and its conversion to a gaussian beam. Talk presented at 30th IEEE International Conference on Plasma Science (ICOPS2003). Jeju. 2003-06-02 - 2003-06-05.