Thermal properties and extinction of a wire-grid polarizer

Seongmin Im; Eunji Sim; Donghyun Kim

doi:10.1117/12.2509073

26 February 2019 Thermal properties and extinction of a wire-grid polarizer

Seongmin Im, Eunji Sim, Donghyun Kim

Proceedings Volume 10912, Physics and Simulation of Optoelectronic Devices XXVII; 109121D (2019) https://doi.org/10.1117/12.2509073
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Heat induced by electromagnetic absorption affects optical properties and experimental conditions. For this reason, thermal effects in optics remain important. In this work, we investigate thermal properties of a wire-grid polarizer (WGP). A WGP is a well-known optical polarizing device and easy to combine with planar structures such as microfluidic channel and other optical components. We analyzed thermal characteristics of a WGP by considering the effects of various geometric parameters: wire-grid period, height, and fill factor. For far-field calculation of optical characteristics, rigorous-coupled wave analysis (RCWA) has been used with 40 spatial harmonics. Together, we solved wave-coupled heat transfer equation by 2D finite element method (FEM) for computing electromagnetic-thermal characteristics. 2D FEM calculation was verified with RCWA and 3D FEM. From the analysis, it was shown that a fill factor was the most dominant geometrical parameter for near-field thermal extinction. In addition, TM polarized light has higher local temperature T_max = 354.5 K than that of TE polarized light T_max = 331.7 K with an incident power at 0.1 mW/μm². Polarization switching was found to induce thermal extinction of 4.78 dB with a temperature difference ▵T = 54.3 K in an identical WGP structure. Furthermore, the ratio of steady-state time was almost uniform within 15%, because the heat transfer mechanism is almost identical for TE and TM polarization. Time scale was on the order of μs. We expect this result to be useful for the integration of WGPs in polarization-sensitive thermal switching applications.

Citation Download Citation

Seongmin Im, Eunji Sim, and Donghyun Kim "Thermal properties and extinction of a wire-grid polarizer", Proc. SPIE 10912, Physics and Simulation of Optoelectronic Devices XXVII, 109121D (26 February 2019); https://doi.org/10.1117/12.2509073

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polarization

Transmittance

Finite element methods

Polarizers

Absorption

Electromagnetism

Temperature metrology

Show All Keywords

Keywords/Phrases

Search In:

Publication Years