1 W average-power 100 MHz repetition-rate 259 nm femtosecond deep ultraviolet pulse generation from ytterbium fiber amplifier.
We demonstrate 1W average-power ultraviolet (UV) femtosecond (fs) ultrashort pulse generation at a wavelength of 259 nm and a repetition rate as high as 100 MHz by quadrupling a fs ytterbium-fiber laser. A cavity-enhanced design is employed for efficient frequency doubling to the UV region. The optical-to-optical efficiency of UV output to the pump diode is 2.6%.
Zhou
Xiangyu
X
National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan. xiangyu-shuu@aist.go.jp
Yoshitomi
Dai
D
Kobayashi
Yohei
Y
Torizuka
Kenji
K
D053844:Lasers, Solid-State; D013997:Time Factors; D014466:Ultraviolet Rays; D015018:Ytterbium
D015018:Ytterbium