Simultaneous tailoring of longitudinal and transverse mode inside an Er:YAG laser
Simultaneous tailoring of longitudinal and transverse mode inside an Er:YAG laser
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在 Er:YAG 激光器内同时调整纵向和横向模式
DOI：
10.3788/col202119.111404
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发表时间：
2021-11
影响因子：
3.5
通讯作者：
Chunqing GAO
中科院分区：
文献类型：
--
作者：
Rui SONG;Xueting LIU;Shiyao FU;Chunqing GAO
In this paper, we demonstrate a scheme to tailor both longitudinal and transverse modes inside a laser cavity and constitute an eye-safe single longitudinal mode Er∶Y3Al5O12 (Er:YAG) vector laser. A q-plate is employed as a spin-orbital conversion element to modulate the transverse mode and obtain cylindrical vector beams. An optical isolator is employed as a non- reciprocal element for the ring cavity to enforce unidirectional operation and achieve single longitudinal oscillation. The characteristics of power, transverse intensity, and polarization spectrum of the output beams are observed. The observed typical single longitudinal mode and highly matched special polarizations prove the successful tailoring of both longitudinal and transverse modes.
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类似于 1 mJ 脉冲涡旋激光（1645 nm），具有明确的螺旋度
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