N Sarukura, Z Liu, Y Segawa, K Edamatsu, Y Suzuki… - Optics letters, 1995 - opg.optica.org
Ce^ 3+: LuLiF_4 is shown to have a broad gain spectrum, which is attractive for short-pulse
applications. A large small-signal gain over 6 dB/cm and a sufficiently large saturation …