Ultraviolet Imaging Based on Surface Plasmon Resonance With Azo-Polymer Sensing Layer

Author

Xinyu Zhang ; Keyi Wang ; Jiajun Ma ; Qijin Zhang ; Peizheng Yan ; Xiujie Tian

Author_Institution

Dept. of Eng., Univ. of Sci. & Technol. of China, Hefei, China

Volume

27

Issue

12

fYear

2015

fDate

June15, 15 2015

Firstpage

1297

Lastpage

1300

Abstract

An innovative surface plasmon resonance (SPR) sensor is constructed to achieve ultraviolet (UV) imaging. The SPR sensor is fabricated using a gold-coated prism, which is then overlaid with an azo-polymer film as a UV sensing layer. The refractive index of the azo-polymer decreases during UV light irradiation. The changes of the refractive index influence the intensity of the light reflected from the SPR sensor. With a CCD camera, both the images of the light beams reflected from the SPR sensor before and after UV irradiation are recorded. The shape of UV light beam intensity distribution can then be calculated by comparing the difference between these two images.

Keywords

CCD image sensors; gold; light reflection; optical fabrication; optical polymers; optical prisms; optical sensors; photodetectors; polymer films; refractive index; surface plasmon resonance; thin film sensors; ultraviolet detectors; CCD camera; SPR sensor; UV light beam intensity distribution; UV light irradiation; azo-polymer film; azo-polymer sensing layer; gold-coated prism; refractive index; surface plasmon resonance sensor; ultraviolet imaging; Cameras; Charge coupled devices; Optical fiber sensors; Optical imaging; Polymers; Radiation effects; Azo-polymer; Photoisomerization; Surface plasmon resonance; UV imaging; azo-polymer; photoisomerization;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2015.2421053

Filename

7089216