Stationary and coherent spectroscopy of 167Er3+ in waveguides in 7LiYF4 crystal Mansur Minnegaliev, Ravil Urmancheev, Konstantin Gerasimov, Alexander Kalinkin, Ivan Dyakonov, Mikhail Saygin, Sergey Kulik and Sergey Moiseev EPJ Web Conf., 161 (2017) 03019 Published online: 31 October 2017 DOI: 10.1051/epjconf/201716103019