Fiber Laser, Toward the Efficient and High-power Excitation of Vector Mode

来源 :第八届中国功能玻璃学术研讨会暨新型光电子材料国际论坛 | 被引量 : 0次 | 上传用户:cheng_oooo
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  Radially and azimuthally polarizedlight beams,being two eminent members of cylindrical vector light family,are characterized by spatially axis-symmetrical polarizations and doughnut-shaped intensity patterns,and they have shown the particular features and advantages over linearly or circularly polarized beams.For example,they can be tightly focused and form longitudinal electric or magnetic fields at the focal spot.Owing to these factors,cylindrical vector beams have been applied widely in many fields,including high-resolutionmicroscopy,particle trapping,atom guiding,material processing,etc.Cylindrical vector light can be produced in a laser resonator forced by an intracavity polarization discriminator.Among various vector lasers,the rare-earth doped fiber laser has attracted increasing interest owing to its capacities for power scaling,thermal dissipation and modal confinement.In this talk,we will report our results in realizing high-power and vector-mode excitations of the fiber laser by using different mode-selective mechanisms.In detail,firstly,we will present our first realization of radially polarizied fiber laser based on an intracavity Brewster axicon,and then we will present the results on high-power and highly efficient radially polarizied fiber laser based on a photonic crystal grating,at last we will report our recent results on the high-power and azimuthally polarizied oscillation of an Yb fiber laser based on an intracavity birefringent crystal.
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