缺陷镜技术直接产生高功率高阶涡旋激光研究（特邀）

Lunbin, 周伦滨 Zhou; Kai, 冯凯 Feng; Dong, 王冬 Wang; Bin, 徐斌 Xu

doi:10.3788/irla20210408

Cited by 2 publications

(1 citation statement)

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“…Active methods involve directly generating the LG modes inside the laser cavity by controlling the gain and loss of different modes to suppress the oscillation of the TEM 00 mode, so as to obtain the target LG 0m mode. Several active methods have been reported, including the use of annular pump light [13][14][15][16][17], spot-defect mirror [18,19], off-axis pumping [20,21], the introduction of naturally or thermally induced birefringence [22,23] and mode-selecting devices into the cavity [24,25]. Among these methods, annular pumping has been proven to be an effective way to generate LG 0m vortex beams since the annular pump beam has the optimal spatial overlap with LG 0m modes.…”

Section: Introductionmentioning

confidence: 99%

High-power and efficient vortex Nd:YVO₄ laser using annular pumping

Fan,

Wang,

Sun

et al. 2023

Laser Phys.

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Optical vortex lasers that carry orbital angular momentum are of great significance for many applications. A high-power and efficient continuous-wave vortex Nd:YVO4 laser at 1064 nm was demonstrated with annular pumping based on an axicon. The high-quality LG01 vortex beams with maximum output power up to 6.25 W was achieved under the absorbed pump power of 14.4 W, corresponding to an optical conversion efficiency of 43.4% and a slope efficiency of 44.8%, respectively. Controlling the wavefront handedness of the LG01 beam was simply achieved by carefully adjusting the output coupler and the window inserted in the resonator. This study shows that annular pumping based on an axicon would have great potential in the development of high-power vortex solid-state lasers with simple and compact resonator structure.

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