Influence of gain or absorption media on transmission of partially coherent vortex beams

被引：4

作者：

Yang, Chen ^{[1
]}

Guo, Xin ^{[1
]}

Guo, Miaojun ^{[1
]}

Wang, Jing ^{[1
]}

Duan, Meiling ^{[2
]}

Li, Jinhong ^{[1
]}

机构：

[1] Taiyuan Univ Sci & Technol, Dept Phys, Taiyuan 030024, Peoples R China

[2] North Univ China, Dept Phys, Taiyuan 030051, Peoples R China

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2021年 / 38卷 / 05期

基金：

中国国家自然科学基金;

关键词：

SCHELL-MODEL BEAMS; FREE-SPACE; PROPAGATION; EVOLUTION; WAVE;

D O I：

10.1364/JOSAA.420800

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The results show that the larger the real part of the wave number is, the farther the transmission of PCVBs with hollow distribution will be. The expression of partially coherent vortex beams passing through a gain/absorption medium is derived in this paper based on the generalized Huygens?Fresnel principle. The influences of the refractive index (related to the real part of the wave number) and the gain/absorption characteristics (related to the imaginary part of the wave number) on the transmission of partially coherence vortex beams are investigated. The results show that the larger the real part of the wave number is, the farther the transmission of PCVBs with hollow distribution will be. In gain media, the light power keeps increasing; on the other hand, in absorption media, the light power keeps decreasing. The diffraction effect of the media on the intensity distribution also is mentioned. We discover that, during the transmission, the evolutions of the spectral degree of coherence relate to the real and imaginary parts of the wave number, and the coherence vortices can split and generate. We believe the results of this study are important to the fields of singular optics and optical communications. ? 2021 Optical Society of America

引用

页码：675 / 682

页数：8

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