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oe1(光电查) - 科学论文

2 条数据
?? 中文（中国） ▾

  • Experimental Investigation of Power-Scaled Dissipative Soliton Generation

    摘要： We conduct a power scaling study for the femtosecond dissipative soliton generation with a 10-μm core diameter, ?ber-based, compact-sized, and low-cost all-normal-dispersion laser con?guration. Laser performance, in terms of spectra distribution, temporal characteristic, average power, and stability in 8 h, for different ?ltering bandwidths has been investigated. The obtainable highest output power and shortest pulse duration are 4.5 W and 85 fs, respectively. To our best knowledge, this is the shortest pulse duration among the reported all-?ber pumped Watt-level mode-locked ?ber lasers.

    关键词： mode-locking,pulse-shaping,dissipative soliton,laser performance,power-scaling

    更新于2025-09-23 15:19:57

  • Characterisation and laser performance of a Yb:LuAG double-clad planar waveguide grown by pulsed laser deposition

    摘要： We report on the fabrication of a crystalline multi-layer lutetium aluminium garnet planar waveguide, with a ytterbium-doped core, via hetero-epitaxial pulsed laser deposition on an undoped yttrium aluminium garnet substrate. Physical and optical characterization of the device revealed good crystallinity of the grown films and mode propagation investigations confirmed waveguiding properties. The measured fluorescence lifetime and calculated absorption and stimulated emission cross section spectra are found to be comparable with those reported for Yb:LuAG crystals grown by traditional methods. When end-pumped by a diode-laser bar, the crystalline double-clad Yb:LuAG planar waveguide lased using a quasi-monolithic cavity configuration. An output power of > 3 W with a 20% slope efficiency was obtained, limited by a waveguide propagation loss of 1.2 dB cm?1. This first demonstration of a multi-layer LuAG double-clad planar waveguide laser shows great potential for realising compact high-power waveguide lasers and amplifiers.

    关键词： pulsed laser deposition,laser performance,Yb:LuAG,planar waveguide

    更新于2025-09-16 10:30:52