Examining second-harmonic generation of high-order Laguerre-Gaussian modes through a single cylindrical lens

被引：29

作者：

Fang, Xinyuan ^{[1
,2
]}

Kuang, Zeyu ^{[1
,2
]}

Chen, Peng ^{[1
,2
]}

Yang, Haocheng ^{[1
,2
]}

Li, Qian ^{[1
,2
]}

Hu, Wei ^{[1
,2
]}

Lu, Yanqing ^{[1
,2
]}

Zhang, Yong ^{[1
,2
]}

Xiao, Min ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Coll Engn & Appl Sci, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China

[3] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

来源：

OPTICS LETTERS | 2017年 / 42卷 / 21期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

ORBITAL ANGULAR-MOMENTUM; BEAM; LIGHT; ENTANGLEMENT; DIFFRACTION;

D O I：

10.1364/OL.42.004387

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We experimentally investigate the second-harmonic generation of a high-order Laguerre-Gaussian (LG) mode under the quasi-phase-matching (QPM) configuration. First, we introduce a simple method to observe the azimuthal (l) and radial (p) indices of the high-order LG modes. Based on the astigmatic transformation technique, l and p are revealed in the number of dark stripes of the converted pattern in the focal plane. Then, using this efficient method of measurement, we demonstrate in experiments a second-harmonic LG mode with its radial and azimuthal indices being twice those of the inputted fundamental wave through QPM in a periodically poled KTP crystal. Our results provide a feasible way to obtain simultaneously the LG modes with larger radial and azimuthal indices. (C) 2017 Optical Society of America

引用

页码：4387 / 4390

页数：4

共 49 条

[1] ORBITAL ANGULAR-MOMENTUM OF LIGHT AND THE TRANSFORMATION OF LAGUERRE-GAUSSIAN LASER MODES [J].