Thermal extinction and image misregistration on metallic nanowire arrays

Seongmin Im; Gwiyeong Moon; Eunji Sim; Donghyun Kim

doi:10.1117/12.2610533

4 March 2022 Thermal extinction and image misregistration on metallic nanowire arrays

Seongmin Im, Gwiyeong Moon, Eunji Sim, Donghyun Kim

Proceedings Volume 11995, Physics and Simulation of Optoelectronic Devices XXX; 119950N (2022) https://doi.org/10.1117/12.2610533
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Metallic nanowire arrays have been used for discriminating linear polarization and used as a wire-grid polarizer in the simplest form. For their linear geometry, metallic nanowire arrays distinguish p- (perpendicular) from s-polarization (parallel) with respect to the direction of nanowire arrays. In this study, we analyze opto-thermal response on metallic nanowire arrays, for which we performed simulation using finite element method to solve wave-coupled heat transfer equations on metallic nanowire arrays. From the analysis, it was shown that s-polarized light presents lower maximum temperature T_max = 331.7 K than that of p-polarized light T_max = 354.5 K under an incident power at 0.1 mW/μm². In addition, thermal extinction which is defined as the ratio of maximum temperature between p- and s-polarization is measured as 4.78 dB which corresponds to a temperature difference of 54.3K. We have also investigated dispersive misregistration assuming that metallic nanowire arrays are integrated with an imaging detector placed at the focal length of a tube lens. The dispersive effect of a convex tube lens was evaluated using non-uniformity metrics that measure offaxis performance (NTr_off, ER_off) and wavelength dependence (NTr_λ, NER_λ). Maximum non-uniformity was measured to be NTr_λ.max = 0.84935, NER_λ.max = 0.90139, NTr_off.max = 0.93211, and NER_off.max = 0.93624. Image misregistration induced by dispersive effects was also assessed.

Citation Download Citation

Seongmin Im, Gwiyeong Moon, Eunji Sim, and Donghyun Kim "Thermal extinction and image misregistration on metallic nanowire arrays", Proc. SPIE 11995, Physics and Simulation of Optoelectronic Devices XXX, 119950N (4 March 2022); https://doi.org/10.1117/12.2610533

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