"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Reducing sidelobes in a Rugate filter to achieve high reflectivity

ELHAM JASIM MOHAMMAD1,*

Affiliation

  1. Physics Science Department, College of Science, Mustansiriyah University, Baghdad, Iraq

Abstract

In this paper, an optical interference Rugate filter was designed with high refractive index (2.4 with thickness= 57.292 nm), low refractive index (1.5 with thickness= 91.667 nm) and the reflectance spectra= 550 nm. Several optimized steps were performed to reduce the secondary sidelobes. The results show excellent flatness in the reflectance band. Apodization, quintic matching layers, and top AR coating are two effective means to eliminate the sidelobes near the stopband region. This paper goes into greater detail on analyzing data and explains what different statistical information can be calculated when designing optical filters, including mean, median, mode, and standard deviation..

Keywords

Apodization, AR coating, Rugate filter, Refractive index, Reflectivity, Statistics analyzing data.

Submitted at: May 12, 2023
Accepted at: Oct. 6, 2023

Citation

ELHAM JASIM MOHAMMAD, Reducing sidelobes in a Rugate filter to achieve high reflectivity, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 9-10, pp. 418-423 (2023)