Effect of aberrations on the beam quality factor of Hermite-Gauss beams

被引：1
|
作者：
Mphuthi, Nokwazi [1 ]
Bell, Teboho [1 ]
Mabena, Chemist M. [1 ]
机构：
[1] CSIR Photon Ctr, Meiring Naude Rd, Pretoria, South Africa
来源：
OPTICS EXPRESS | 2023年 / 31卷 / 24期
基金：
新加坡国家研究基金会;
关键词：
ORBITAL ANGULAR-MOMENTUM; OPTICAL TRAP; LASER; MODES; GENERATION; PROPAGATION; ACCELERATION; DEGRADATION;
D O I：
10.1364/OE.502925
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The effect of aberrations on the beam quality factor (M2) of Hermite-Gauss (HG) beams is examined. Using the method of moments, we derive closed-form analytical expressions of M2 due to astigmatism and spherical aberration. Our analysis reveals that the radius of the HG beams plays a significant role in determining the effect of the aberrations on M2. For each aberration, we establish a critical width that separates the region where M2 changes infinitesimally from the region where it changes sharply. The analytical results are validated through numerical simulations.
引用
收藏
页码：39379 / 39395
页数：17
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