Hermite-Gaussian beams with orbital angular momentum

被引：0
|
作者：
Kotlyar, V. V. [1 ]
Kovalev, A. A. [1 ]
Porfirev, A. P. [1 ]
Kozlova, E. S. [1 ]
机构：
[1] Russian Acad Sci, Image Proc Syst Inst, Fed Sci Res Ctr Crystallog & Photon, Samara, Russia
来源：
2019 IEEE 8TH INTERNATIONAL CONFERENCE ON ADVANCED OPTOELECTRONICS AND LASERS (CAOL) | 2019年
基金：
俄罗斯科学基金会;
关键词：
orbital angular momentum; Hermite-Gaussian beam; cylindrical lens;
D O I：
10.1109/caol46282.2019.9019440
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The cylindrical lens brings the orbital angular momentum (OAM) into the original Hermite-Gaussian (HG) beam. The OAM of such a beam is the sum of the vortex and astigmatic components, and can reach large values (tens and hundreds of thousands per photon). We get the exact formula for OAM of such astigmatic HG (aHG) beams. Using intensity distributions of the aHG beam in foci of two cylindrical lenses, we measure the normalized OAM of the elliptic aHG beam, which differs only by 7% from its theoretical OAM value (experimental OAM is -13.62, theoretical OAM is -14.76).
引用
收藏
页码：530 / 532
页数：3
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