Influence of surface roughness on the polarimetric characteristics of a wire-grid grating polarizer

Ryu, Hojeong; Yoon, Soon Joon; Kim, Donghyun

doi:10.1364/ao.47.005715

Cited by 14 publications

(3 citation statements)

References 24 publications

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“…The remaining difference between experiment and theory is most likely due to the spatial resolution of the simulation and the measurement uncertainty of α on the SEM image, as well as the aforementionned effect of the adhesion layer. According to recent studies [22], surface roughness should not degrade the performance significantly. In addition, the trapezoidal shape smoothens the field distribution compared to rectangular shapes, further reducing the influence of surface irregularities.…”

Section: Grating Optimisation With Realistic Geometrical Modelmentioning

confidence: 97%

Impact of the slit geometry on the performance of wire-grid polarisers

Mélen¹,

Rosenfeld²,

Weinfurter³

2015

Opt. Express

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Abstract:Wire-grid polarisers are versatile and scalable components which can be engineered to achieve small sizes and extremely high extinction ratios. Yet the measured performances are always significantly below the predicted values obtained from numerical simulations. Here we report on a detailed comparison between theoretical and experimental performances. We show that the discrepancy can be explained by the true shape of the plasmonic structures. Taking into account the fabrication details, a new optimisation model enables us to achieve excellent agreement with the observed response and to re-optimise the grating parameters to ensure experimental extinction ratios well above 1,000 at 850 nm. B 50, 4795-4801 (1994). 5. T. Thio, K. M. Pellerin, R. a. Linke, H. J. Lezec, and T. W. Ebbesen, "Enhanced light transmission through a single subwavelength aperture," Opt. Lett. 26, 1972Lett. 26, -1974Lett. 26, (2001. 6. S. Astilean, P. Lalanne, and M. Palamaru, "Light transmission through metallic channels much smaller than the wavelength," Opt. Commun. 175, 265-273 (2000). 7. Y. Takakura, "Optical resonance in a narrow slit in a thick metallic screen," Phys. Rev. Lett. 86, 5601-5603 (2001). Wang, "Large area, 38 nm half-pitch grating fabrication by using atomic spacer lithography from aluminum wire grids," Nano Lett. 6, 2723Lett. 6, -2727Lett. 6, (2006

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Section: Grating Optimisation With Realistic Geometrical Modelmentioning

confidence: 97%

Impact of the slit geometry on the performance of wire-grid polarisers

Mélen¹,

Rosenfeld²,

Weinfurter³

2015

Opt. Express

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“…Therefore, Au deposited on the etched SiO 2 post has poor surface smoothness at the top and forms a sidewall, which scatters the light and reduces its transmittance, deteriorating the performance of the polarizer. [22][23][24][25] Therefore, we attempted to improve the surface smoothness using the secondary etching technique. To reduce the surface roughness and sidewall, Ar ion milling was performed to etch the irregular shape of the metal.…”

Section: Nanoscale Advances Accepted Manuscriptmentioning

confidence: 99%

Improving infra-red polarized imaging efficiency in a bilayer wire-grid polarizer

et al. 2023

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“…Polarimetry using a biomolecular WGP consisting of hybridizing DNA-nanoparticle composites was reported 24 . In addition, effects of surface roughness were analyzed on WGP performance 25 . A WGP was explored on a rotating platform 26 and flexible surface 27 – 30 , while a plasmonic WGP was investigated based on blazed grating structure 31 .…”

Section: Introductionmentioning

confidence: 99%

Microscale heat transfer and thermal extinction of a wire-grid polarizer

Sim

Kim

2018

Sci Rep

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We explore heat transfer and thermal characteristics of a wire-grid polarizer (WGP) on a microscale by investigating the effect of various geometrical parameters such as wire-grid period, height, and a fill factor. The thermal properties arise from heat transfer by light absorption and conduction in wire-grids. Fill factor was found to be the most dominant geometrical parameter. For TM polarized light, a higher fill factor with thicker wire-grids increased the temperature. The local temperature was found to rise up to Tmax = 354.5 K. TE polarization tended to produce lower temperature. Thermal extinction due to polarimetric extinction by a WGP was also evaluated and highest extinction was observed to be 4.78 dB, which represents a temperature difference ΔT = 54.3 °C. We expect the results to be useful for WGPs in polarization-sensitive thermal switching applications.

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Influence of surface roughness on the polarimetric characteristics of a wire-grid grating polarizer

Cited by 14 publications

References 24 publications

Impact of the slit geometry on the performance of wire-grid polarisers

Impact of the slit geometry on the performance of wire-grid polarisers

Improving infra-red polarized imaging efficiency in a bilayer wire-grid polarizer

Microscale heat transfer and thermal extinction of a wire-grid polarizer

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