[19p-431B-1~18] 3.5 Laser system and materials

[19p-431B-5] Highly-stable CW Er:ZBLAN fiber laser system at 2.8μm

〇(PC)Hiyori Uehara¹, Kenji Goya¹, Daisuke Konishi², Christian Schaefer², Masanao Murakami², Shigeki Tokita¹ (1.Osaka Univ., 2.Mitsuboshi Diamond Co., LTD.)

Keywords:mid-infrared laser, fiber laser, fluoride glass

We have successfully demonstrated a stable CW operation with output power of 24 W by an Er:ZBLAN fiber MOPA system at 2.8 µm wavelength. It is our unique technology that fabrication of a fluoride-fiber-based pump combiner which inhibits thermal loading of the fiber. We suggest such side-pump fiber MOPA system in order to realize power scaling by increasing the number of couplers with keeping the long-term stability.