A Yb-doped CaF2 transparent ceramics was successfully fabricated by the hot-pressed method and its laser characteristics were studied.A broad tuning performance and mode-locked laser operation were demonstrated in thi...A Yb-doped CaF2 transparent ceramics was successfully fabricated by the hot-pressed method and its laser characteristics were studied.A broad tuning performance and mode-locked laser operation were demonstrated in this ceramics for the first time,to our best knowledge.A 60-nm continuous-wavelength tunable laser from 1019 nm to 1079 nm was obtained with a birefringent filter.By employing a semiconductor saturable absorber mirror without additional dispersion compensation elements,a continuous-wave mode-locked laser with pulse duration as short as 575 fs was delivered,at a central wavelength of 1048.5 nm.The oscillator is operated under a repetition rate of 55 MHz.These results indicate that the Yb:CaF2 transparent ceramics is an ideal candidate for the development of ultrafast lasers in the near-infrared regime.展开更多
A novel Nd, La：SrF_2 disordered crystal is prepared, and its continuous-wave wavelength tuning operation is performed for the first time. Employing a surface plasmon resonance（SPR） based gold nanobipyramids（G-NBPs...A novel Nd, La：SrF_2 disordered crystal is prepared, and its continuous-wave wavelength tuning operation is performed for the first time. Employing a surface plasmon resonance（SPR） based gold nanobipyramids（G-NBPs） saturable absorber,we obtain a compact diode-pumped passively Q-switched Nd, La：SrF_2 laser. The stable Q-switched pulse operates with the shortest pulse duration of 1.15 μs and the maximum repetition rate of 41 k Hz. The corresponding single pulse energy is 2.24 μJ. The results indicate that G-NBPs could be a promising saturable absorber applied to the diode-pumped solid state lasers（DPSSLs）.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11974220,61635012,and 51902234)。
文摘A Yb-doped CaF2 transparent ceramics was successfully fabricated by the hot-pressed method and its laser characteristics were studied.A broad tuning performance and mode-locked laser operation were demonstrated in this ceramics for the first time,to our best knowledge.A 60-nm continuous-wavelength tunable laser from 1019 nm to 1079 nm was obtained with a birefringent filter.By employing a semiconductor saturable absorber mirror without additional dispersion compensation elements,a continuous-wave mode-locked laser with pulse duration as short as 575 fs was delivered,at a central wavelength of 1048.5 nm.The oscillator is operated under a repetition rate of 55 MHz.These results indicate that the Yb:CaF2 transparent ceramics is an ideal candidate for the development of ultrafast lasers in the near-infrared regime.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.61475089,51432007,and 61422511)
文摘A novel Nd, La：SrF_2 disordered crystal is prepared, and its continuous-wave wavelength tuning operation is performed for the first time. Employing a surface plasmon resonance（SPR） based gold nanobipyramids（G-NBPs） saturable absorber,we obtain a compact diode-pumped passively Q-switched Nd, La：SrF_2 laser. The stable Q-switched pulse operates with the shortest pulse duration of 1.15 μs and the maximum repetition rate of 41 k Hz. The corresponding single pulse energy is 2.24 μJ. The results indicate that G-NBPs could be a promising saturable absorber applied to the diode-pumped solid state lasers（DPSSLs）.
