TY - JOUR

T1 - A wide-angle shift-free metamaterial filter design for anti-laser striking application

AU - Monks, James

AU - Yue, Liyang

AU - Yan, Bing

AU - Aldred, Barrie

AU - Hurst, Andrew

AU - Wang, Zengbo

N1 - The authors acknowledge the financial support provided by Knowledge Economy Skills Scholarship (KESS2, Ref: BUK289), Wales, United Kingdom, and from Sêr Cymru National Research Network in Advanced Engineering and Materials , (NRNF66 and NRN113), Wales, UK.

PY - 2018/12/15

Y1 - 2018/12/15

N2 - Laser striking is a growing safety concern for pilots and aircraft passengers and there is a great need to develop a wide-angle and shift-free laser filter and protection device. This paper presents one of such design that can effectively block out a Class 3B 532 nm green laser with an Optical Density (OD) of 1.88+ for all polarisation states over a wide range of incident angles up to 85 degree. The design consists of anti-reflection layer, active blocking and substrate layers. The central active blocking layer is designed to be a metamaterial compositemedia made of silver nanoparticles (AgNP) organised in a three-dimensional (3D) primitive hexagonal Bravais lattice configuration and embedded in a high-index dielectric of Zinc Sulphide (ZnS). The designed filter can beplaced onto a number of devices ranging from personnel goggles to aircraft windows. The work may lead to the realisation of next generation laser protection devices that are currently sought by major aerospace companiesand government defence agencies.

AB - Laser striking is a growing safety concern for pilots and aircraft passengers and there is a great need to develop a wide-angle and shift-free laser filter and protection device. This paper presents one of such design that can effectively block out a Class 3B 532 nm green laser with an Optical Density (OD) of 1.88+ for all polarisation states over a wide range of incident angles up to 85 degree. The design consists of anti-reflection layer, active blocking and substrate layers. The central active blocking layer is designed to be a metamaterial compositemedia made of silver nanoparticles (AgNP) organised in a three-dimensional (3D) primitive hexagonal Bravais lattice configuration and embedded in a high-index dielectric of Zinc Sulphide (ZnS). The designed filter can beplaced onto a number of devices ranging from personnel goggles to aircraft windows. The work may lead to the realisation of next generation laser protection devices that are currently sought by major aerospace companiesand government defence agencies.

KW - Optical metamaterials

KW - Laser protection

KW - Wide-angle blocking

KW - Bandstop filte

U2 - 10.1016/j.optcom.2018.07.065

DO - 10.1016/j.optcom.2018.07.065

M3 - Article

VL - 429

SP - 53

EP - 59

JO - Optics Communications

JF - Optics Communications

SN - 0030-4018

ER -