Broadband Achromatic Reflective Metalens
碩士 === 國立臺灣大學 === 電子工程學研究所 === 105 === Conventional achromatic lens is made of many materials with different refractive index. It’s heavy and bulky. Recently, subwavelength structure can control the light phenomenon and phase which is called metamaterial. To compare with conventional lens, it’s ligh...
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ndltd-TW-105NTU054280862019-05-15T23:39:39Z http://ndltd.ncl.edu.tw/handle/3nxgh4 Broadband Achromatic Reflective Metalens 寬頻帶消色差反射式超穎透鏡 Shen-Hung Lu 呂昇鴻 碩士 國立臺灣大學 電子工程學研究所 105 Conventional achromatic lens is made of many materials with different refractive index. It’s heavy and bulky. Recently, subwavelength structure can control the light phenomenon and phase which is called metamaterial. To compare with conventional lens, it’s light and thin. In this article, we made a broadband achromatic reflective metalens(BAML). We chose the material Au-SiO2-Au to be our sandwich-like structure because gold is high reflective material in the near infrared region(1200nm-1680nm). Then we present an optimized formula of phase compensation. With CST simulation, we define a new structure operated in the region which phase changes linearly. The structure called integrated-resonant structure is the unit element of BAML. The device is expected to focus the incident light with different wavelength on the the same focal length. If we successfully realize the concept, we can solve the problem of conventional lenses. 管傑雄 2017 學位論文 ; thesis 89 zh-TW |
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碩士 === 國立臺灣大學 === 電子工程學研究所 === 105 === Conventional achromatic lens is made of many materials with different refractive index. It’s heavy and bulky. Recently, subwavelength structure can control the light phenomenon and phase which is called metamaterial. To compare with conventional lens, it’s light and thin. In this article, we made a broadband achromatic reflective metalens(BAML). We chose the material Au-SiO2-Au to be our sandwich-like structure because gold is high reflective material in the near infrared region(1200nm-1680nm). Then we present an optimized formula of phase compensation. With CST simulation, we define a new structure operated in the region which phase changes linearly. The structure called integrated-resonant structure is the unit element of BAML. The device is expected to focus the incident light with different wavelength on the the same focal length. If we successfully realize the concept, we can solve the problem of conventional lenses.
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管傑雄 |
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管傑雄 Shen-Hung Lu 呂昇鴻 |
author |
Shen-Hung Lu 呂昇鴻 |
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Shen-Hung Lu 呂昇鴻 Broadband Achromatic Reflective Metalens |
author_sort |
Shen-Hung Lu |
title |
Broadband Achromatic Reflective Metalens |
title_short |
Broadband Achromatic Reflective Metalens |
title_full |
Broadband Achromatic Reflective Metalens |
title_fullStr |
Broadband Achromatic Reflective Metalens |
title_full_unstemmed |
Broadband Achromatic Reflective Metalens |
title_sort |
broadband achromatic reflective metalens |
publishDate |
2017 |
url |
http://ndltd.ncl.edu.tw/handle/3nxgh4 |
work_keys_str_mv |
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