Laguerre-Gaussian induced temperature and refractive index profiles in thermal lens effect

被引：6

作者：

Rahman, Abdul ^{[1
]}

Cabrera, Humberto ^{[2
]}

Malik, Muhammad Usman ^{[1
]}

Ashraf, Imrana ^{[1
,2
]}

机构：

[1] Quaid I Azam Univ, Dept Phys, Islamabad 44000, Pakistan

[2] Abdus Salam Int Ctr Theoret Phys, Opt Lab, Str Costiera 11, I-34151 Trieste, Italy

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2021年 / 38卷 / 01期

关键词：

LASER; BEAMS;

D O I：

10.1364/JOSAB.397809

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, we present a theoretical model that describes induced temperature and refractive index profiles generated by the Laguerre-Gaussian (LG) excitation beam. A comparison between LG and conventional fundamental mode TEM00 is drawn. It indicates that there is a decrease or increase around the optical axis (z, r = 0) in the refractive index by LG(1)(0) and LG(0)(5), thus enabling an enhancement of the refractive index gradient along the radius r. The temperature and refractive index profiles produced by the higher-order LC modes are compared with those of a conventional fundamental TEM00 Gaussian beam. The results indicate that there is an increase along the radius in the refractive index gradient generated by LG(1)(0) and LG(0)(5) which could enhance the sensitivity in photothermal lens detection. (C) 2020 Optical Society of America

引用

页码：52 / 59

页数：8

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