Abstract
In practical applications, the linear to circular (LTC) polarization conversion of electromagnetic waves is of great significance. In this work, we designed a broadband high-efficiency reflective LTC polarization converter with temperature control in the visible range. Each periodic unit of the LTC polarization converter is composed of a gold mirror, a dielectric layer, a wide L-shaped gold plate and a narrow anti-L-shaped VO<sub>2</sub> strip. The results show that the conversion efficiency can reach 0.9 in the visible range, and the switch of polarization converter can be controlled by VO<sub>2</sub>. The linear to circular polarization converter has potential applications in stealth technology, electromagnetic measurement.
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