Study on band-pass characteristics of the enhanced optical transmission of subwavelength metal column array

CHEN Ying; JIANG Yuhong; KONG Xiaoshuang; YAN Kezhu

doi:10.7510/jgjs.issn.1001-3806.2017.02.010

LASER TECHNOLOGY > 2017 > 41(2): 196-199. > DOI: 10.7510/jgjs.issn.1001-3806.2017.02.010

CHEN Ying, JIANG Yuhong, KONG Xiaoshuang, YAN Kezhu. Study on band-pass characteristics of the enhanced optical transmission of subwavelength metal column array[J]. LASER TECHNOLOGY, 2017, 41(2): 196-199. DOI: 10.7510/jgjs.issn.1001-3806.2017.02.010

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Study on band-pass characteristics of the enhanced optical transmission of subwavelength metal column array

Physical Engineering College, Qufu Normal University, Qufu 273165, China

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Received Date: March 27, 2016
Revised Date: April 19, 2016
Published Date: March 24, 2017

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Abstract

Abstract

In order to study the enhanced optical transmission characteristics of subwavelength compact metal column arrays film on the glass substrates, 3-D finite difference time domain method was adopted to simulate. The enhanced optical transmission spectrum of the film presented a single main peak structure. The peak position and bandwidth of transmission spectrum were different due to the difference of the metal column array period and metal column height. Au and Ag metal model were calculated and analyzed for optimization. The results show that the peak value of the normalized transmittance of Ag column arrays can reach 4.55. By altering array period, the peak wavelength changes between 800nm to 1600nm. The full width at half maximum of transmission band will increase from 220nm to 380nm. The study provides a new solution for the design of micro device about optical band-pass filter.
- optical devices,
- transmission enhancement,
- finite difference time domain,
- subwavelength,
- surface plasma

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