Optical vortex lattice mode generation from a diode-pumped Pr3+:LiYF4 laser

被引：17
|
作者：
Rao, A. Srinivasa [1 ,2 ]
Miike, Taku [1 ]
Miyamoto, Katsuhiko [1 ,2 ]
Omatsu, Takashige [1 ,2 ]
机构：
[1] Chiba Univ, Grad Sch Engn, Chiba 2638522, Japan
[2] Chiba Univ, Mol Chiral Res Ctr, Chiba 2638522, Japan
来源：
JOURNAL OF OPTICS | 2021年 / 23卷 / 07期
基金：
日本学术振兴会;
关键词：
Pr; YLF laser; off-axis pumping; mode selection; beam shaping; laser resonator; optical vortex lattices; ORANGE; BEAMS; RED;
D O I：
10.1088/2040-8986/ac067d
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on the direct generation of optical vortex lattice (OVL) modes from a diode-pumped Pr3+:LiYF4 (Pr:YLF) laser achieved by employing off-axis (transverse) and defocused (longitudinal) pumping geometries in the laser medium. OVL modes with more than 40 phase singularities are generated. The experimentally observed OVL modes are well supported by a theoretical analysis based on the superposition of Hermite-Gaussian modes. We also discuss the intracavity frequency doubling of the OVL modes. The proposed OVL mode laser system can be applied to fundamental optical science and advanced material engineering.
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页数：9
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